Saitoh Kunimasa

Faculty of Information Science and Technology　Media and Network Technologies　Information Communication SystemsProfessor
Last Updated :2025/11/11

■Researcher basic information

Degree

  • Doctor of Engineering, Hokkaido University
  • Master of Engineering, Hokkaido University

Researchmap personal page

Home Page URL

Researcher number

  • 20333627

ORCID ID

J-Global ID

Research Keyword

  • Optical Fiber
  • Optical Fiber Communications
  • Optical Fiber Technology
  • Optoelectronics
  • Photonic Integrated Circuit
  • Silicon photonics
  • Computational Electromagnetics
  • Lightwave and Radio Science

Research Field

  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Communication and network engineering
  • Nanotechnology/Materials, Optical engineering and photonics
  • Manufacturing technology (mechanical, electrical/electronic, chemical engineering), Electronic devices and equipment

Educational Organization

■Career

Career

  • Apr. 2013 - Present
    Hokkaido University, Graduate School of Information Science and Technology, Professor
  • Oct. 2005 - Present
    Graduate School of Information Science and Technology, Hokkaido University, 大学院情報科学研究科, Associate Professor
  • Apr. 2007 - Mar. 2013
    Hokkaido University, Graduate School of Information Science and Technology, Associate Professor
  • Oct. 2005 - Mar. 2007
    Hokkaido University, Graduate School of Information Science and Technology, Associate Professor
  • Apr. 2004 - Sep. 2005
    Hokkaido University, Graduate School of Information Science and Technology, Assistant Professor
  • Apr. 2004 - Sep. 2005
    Graduate School of Information Science and Technology, Hokkaido University, 大学院情報科学研究科, Research Associate
  • Apr. 2001 - Mar. 2004
    Hokkaido University, Assistant Professor
  • Apr. 2001 - Mar. 2004
    Graduate School of Engineering, Hokkaido University, 大学院工学院, Research Associate
  • Apr. 1999 - Mar. 2001
    日本学術振興会特別研究員
  • Apr. 1999 - Mar. 2001
    Hokkaido University, Research Fellow of the Japan Society for the Promotion of Science

Educational Background

  • Apr. 1999 - Mar. 2001, Hokkaido University, 工学研究科, 電子情報工学専攻博士後期課程, Japan
  • 2001, Hokkaido University, Graduate School, Division of Engineering
  • Apr. 1997 - Mar. 1999, Hokkaido University, 工学研究科, 電子情報工学専攻修士課程, Japan
  • 1999, Hokkaido University, Graduate School, Division of Engineering
  • Apr. 1994 - Mar. 1997, Hokkaido University, School of Engineering, Department of Electronics Engineering, Japan
  • 1997, Hokkaido University, Faculty of Engineering

Committee Memberships

  • 2018 - Present
    レーザー学会, 「ファイバーレーザー」技術専門委員会委員, Society
  • May 2015 - Present
    電子情報通信学会 光ファイバ応用技術専門委員会, 顧問, Society
  • 2015 - Present
    European Conference on Optical Communication (ECOC), Technical Program Committee (TPC), Society
  • May 2011 - Present
    電子情報通信学会, 光エレクトロニクス研究専門委員会 専門委員, Society
  • Apr. 2010 - Present
    電子情報通信学会, 光通信インフラの飛躍的な高度化に関する時限研究専門委員会 専門委員, Society
  • 2019
    Optoelectronics and Communication Conference (OECC 2019), Technical Program Committee (TPC), Society
  • Jun. 2010 - Apr. 2018
    電子情報通信学会, 光通信インフラの飛躍的な高度化に関する時限研究専門委員会 幹事補佐, Society
  • 2018
    Optoelectronics and Communication Conference (OECC 2018), Technical Program Committee (TPC), Society
  • 2018
    European Conference on Optical Communication (ECOC 2018), Sub Committee Chair (SC 1), Society
  • May 2011 - Apr. 2016
    電子情報通信学会, エレクトロニクスシミュレーション研究専門委員会 専門委員, Society
  • 2012 - 2016
    SPIE Photonics West, Next-Generation Optical Communication: Components, Sub-Systems, and Systems II, Technical Program Committee, Society
  • 2016
    Optical Fiber Communication Conference (OFC 2016), Chair of Subcommittee D4, Society
  • 2016
    Optoelectronics and Communication Conference (OECC 2016), Technical Program Committee (TPC), Society
  • May 2009 - Apr. 2015
    電子情報通信学会, 光ファイバ応用技術研究専門委員会 専門委員, Society
  • 2014
    IEEE Summer Topicals (SUM 2014), Co-Chair, Society
  • 2014
    Optoelectronics and Communication Conference (OECC 2014), Technical Program Committee (TPC), Society
  • Apr. 2010 - Mar. 2013
    The Optical Society of Americal (OSA), Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC) Technical Program Committee, Society
  • 2013
    IEEE Summer Topicals (SUM 2013), Technical Program Committee, Society
  • May 2010 - May 2012
    電子情報通信学会, 代議員会 代議員（互選）, Society
  • 2011 - 2012
    電子情報通信学会, ネットワーク社会のさらなる発展を支える光通信技術特集 編集委員, Society
  • Oct. 2010 - Jan. 2012
    The Optical Society of America (OSA), Topical Meetings on Speciality Optical Fibers and Applications (SOF) Technical Program Committee, Society
  • 2012
    International Conference on Optical Internet (COIN 2012), Workshop Organizers, Society
  • May 2009 - May 2011
    電子情報通信学会北海道支部, 庶務幹事, Society
  • Jan. 2009 - Jan. 2011
    The Institute of Electrical and Electronics Engineers (IEEE) Sapporo Section, Secretary/Treasure, Society
  • Jun. 2009 - Dec. 2010
    電子情報通信学会, 第15回光エレクトロニクス・光通信国際会議（OECC2010） 運営委員会 会場委員会 委員, Society
  • 2009 - 2010
    The Optical Society of Americal (OSA), The 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF 2010) Technical Program Committee, Society
  • 2009 - 2010
    The Optical Society of America (OSA), The 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF 2010) Technical Program Committee, Society
  • 2010
    The Optical Society of America (OSA), Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC) Technical Program Committee, Society
  • 2008 - 2009
    The Institute of Electrical and Electronics Engineers (IEEE), Guest Editor for IEEE/OSA Journal of Lightwave Technology Special Issue on Microstructured Fibers, Society
  • 2008 - 2009
    The Institute of Electrical and Electronics Engineers (IEEE), Guest Editor for IEEE/OSA Journal of Lightwave Technology Special Issue on Microstructured Fibers, Society
  • 2007 - 2008
    The Institute of Electrical and Electronics Engineers (IEEE), International Conference on Photonics in Switching 2008 Technical Program Committee, Society
  • 2007 - 2008
    The Institute of Electrical and Electronics Engineers (IEEE), IEEE Winter Topicals 2008 Co-Chair (Photonic Crystal Fibers: Technology and Applications), Society
  • 2007 - 2008
    The Institute of Electrical and Electronics Engineers (IEEE), International Conference on Photonics in Switching 2008 Technical Program Committee, Society
  • 2008
    The Institute of Electrical and Electronics Engineers (IEEE), International Conference on Fiber Optics and Photonics Technical Program Committee, Society
  • 2008
    The Institute of Electrical and Electronics Engineers (IEEE), International Conference on Fiber Optics and Photonics Technical Program Committee, Society
  • 2006 - 2007
    The Institute of Electrical and Electronics Engineers (IEEE), IEEE Winter Topicals 2008 Co-Chair (Photonic Crystal Fibers: Technology and Applications), Society
  • 2006
    電子情報通信学会, Progress in Electromagnetics Research Symposium (PIERS) 2006-Tokyo Session Organizers, Society

■Research activity information

Awards

  • Oct. 2020, NPO法人 モバイル・コミュニケーション・ファンド, Docomo Mobile Science Award　　　　　　　　　　　　　　　
    Kunimasa Saitoh
  • Jul. 2017, IEEE Photonics Society Distinguished Lecturers Award　　　　　　　　　　　　　　　
    SAITOH Kunimasa
  • Feb. 2015, Japan Society for the Promotion of Science (JSPS), JSPS Prize　　　　　　　　　　　　　　　
    SAITOH Kunimasa
  • Nov. 2011, 東北大学電気通信研究所, 第1回 RIEC Award　　　　　　　　　　　　　　　
    Japan
  • Apr. 2009, 船井情報科学奨励賞　　　　　　　　　　　　　　　
    Japan
  • Apr. 2008, 文部科学大臣表彰若手科学賞　　　　　　　　　　　　　　　
    Japan
  • Nov. 2005, エリクソン・ヤング・サイエンティスト・アワード2005　　　　　　　　　　　　　　　
    Japan
  • 2005, The Ericsson Young Scientist Award 2005　　　　　　　　　　　　　　　
  • Jul. 2004, Best Paper Award in 9th OptoElectronics and Communications Conference (OECC2004)　　　　　　　　　　　　　　　
  • 2004, Best Paper Award in 9th OptoElectronics and Communications Conference (OECC2004)　　　　　　　　　　　　　　　
  • Feb. 2003, 平成15年度丹羽保次郎記念論文賞　　　　　　　　　　　　　　　
    Japan
  • 2003, Niwa Yasujiro Memorial Paper Award　　　　　　　　　　　　　　　
  • Mar. 2002, 平成13年度電子情報通信学会学術奨励賞　　　　　　　　　　　　　　　
    Japan
  • 2002, Young Scientist Award from IEICE　　　　　　　　　　　　　　　
  • Mar. 2001, 平成12年度電気学会優秀論文発表賞　　　　　　　　　　　　　　　
    Japan
  • Dec. 1999, 平成11年度電気関係学会北海道支部連合大会若手講演者表彰　　　　　　　　　　　　　　　
    Japan
  • May 1999, 平成10年度電子情報通信学会論文賞　　　　　　　　　　　　　　　
    Japan
  • 1999, Excellent Paper Award from IEICE　　　　　　　　　　　　　　　

Papers

Other Activities and Achievements

Books and other publications

  • Optical Fiber Telecommunications Volume V1B, Sixth Edition: Systems and Networks (Optics and Photonics)　　　　　　　　　　　　　　　
    SAITOH Kunimasa, Chapter 13: Transmission Systems Using Multicore Fibers
    Academic Press, May 2013, [Contributor]
  • 光通信技術の飛躍的高度化－光通信の新たな挑戦－　　　　　　　　　　　　　　　
    齊藤 晋聖, 第2 節 光ファイバ技術の現状と今後の展望
    オプトロニクス社, 2012, [Contributor]
  • Frontiers in Guided Wave Optics and Optoelectronics　　　　　　　　　　　　　　　
    Zoltan Varallyay, Kunimasa Saitoh, Chapter 10: Photonic Crystal Fiber for Dispersion Controll
    INTEC, 2010, [Contributor]

Lectures, oral presentations, etc.

  • Suppression of Group-Delay Spread in Coupled Two-LP-Mode Four-Core Fiber　　　　　　　　　　　　　　　
    T. Sato, K. Yoshida, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    IEEE Photonics Conference (IPC 2018), Oct. 2018, English, Oral presentation
    [International presentation]
  • 120 Spatial Channel Few-mode Multi-core Fibre with Relative Core Multiplicity Factor Exceeding 100　　　　　　　　　　　　　　　
    T. Sakamoto, K. Saitoh, S. Saitoh, Y. Abe, K. Takenaga, A. Urushibara, M. Wada, T. Matsui, K. Aikawa, K. Nakajima
    European Conference on Optical Communications (ECOC 2018), Sep. 2018, English, Invited oral presentation
    [Invited], [International presentation]
  • 1.2 Pb/s Transmission Over a 160 mm Cladding, 4-Core, 3-Mode Fiber, Using 368 C+L band PDM-256-QAM Channels　　　　　　　　　　　　　　　
    R. S. Luis, G. Rademacher, B. J. Puttnam, T. A. Eriksson, H. Furukawa, A. Ross-Adams, S. Gross, M. Withford, N. Riesen, Y. Sasaki, K. Saitoh, K. Aikawa, Y. Awaji, N. Wada
    European Conference on Optical Communications (ECOC 2018), Sep. 2018, English, Oral presentation
    [International presentation]
  • Iterative Unreplicated Parallel Interference Canceler for MDL-tolerant dense SDM (12-core × 3-mode) Transmission over 3000 km　　　　　　　　　　　　　　　
    K. Shibahara, T. Mizuno, D. Lee, Y. Miyamoto, H. Ono, K. Nakajima, Y. Amma, K. Takenaga, K. Saitoh
    European Conference on Optical Communications (ECOC 2018), Sep. 2018, English, Oral presentation
    [International presentation]
  • Microscopic Gain Analysis of Modulation-Doped GeSn Quantum Well: Epitaxial Design toward High-Temperature Lasing　　　　　　　　　　　　　　　
    T. Fujisawa, M. Arai, K. Saitoh
    International Conference on Group IV Photonics (GFP), Aug. 2018, English, Oral presentation
    [International presentation]
  • Few-Mode Multi-Core Fiber Technologies for Repeated Dense SDM Transmission　　　　　　　　　　　　　　　
    T. Sakamoto, K. Saitoh, S. Saitoh, K. Shibahara, M. Wada, Y. Abe, A. Urushibara, K. Takenaga, T. Mizuno, T. Matsui, K. Aikawa, Y. Miyamoto, K. Nakajima
    IEEE Photonics Society Summer Topicals Meeting Series (SUM), Jul. 2018, English, Invited oral presentation
    [Invited], [International presentation]
  • PLC-based Mode Controlling Devices for Mode-Division-Multiplexing　　　　　　　　　　　　　　　
    T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Invited oral presentation
    [Invited], [International presentation]
  • Mode Dependent Loss Reduced Few-Mode Multi-Core Fiber Design for Repeated Dense SDM Transmission　　　　　　　　　　　　　　　
    T. Sakamoto, K. Saitoh, S. Saitoh, K. Shibahara, M. Wada, Y. Abe, A. Urushibara, K. Takenaga, T. Mizuno, T. Matsui, K. Aikawa, Y. Miyamoto, K. Nakajima
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Invited oral presentation
    [Invited], [International presentation]
  • A Broadband Silicon Two-Mode Multiplexer Designed by Wavefront Matching Method　　　　　　　　　　　　　　　
    Y. Sawada, T. Sato, T. Fujisawa, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Oral presentation
    [International presentation]
  • Proposal of Si Four-Wavelength Multiplexer using Higher-Order Mode for 100GbE　　　　　　　　　　　　　　　
    J. Takano, T. Sato, Y. Sawada, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Oral presentation
    [International presentation]
  • Novel All-Optical Diode based on Single-Port and Four-Port Photonic Crystal Cavities　　　　　　　　　　　　　　　
    T. Sato, T. Fujisawa, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Oral presentation
    [International presentation]
  • Dependence of Cladding Diameter on Inter-Core Crosstalk in Heterogeneous Multi-Core Fibers　　　　　　　　　　　　　　　
    Y. Amma, K. Takenaga, T. Fujisawa, K. Saitoh, M. Koshiba, K. Aikawa
    OptoElectronics and Communications Conference (OECC), Jul. 2018, English, Oral presentation
    [International presentation]
  • DMD-unmanaged long-haul SDM transmission over 2500-km 12-core × 3-mode MC-FMF and 6300-km 3-mode FMF employing intermodal interference cancelling technique　　　　　　　　　　　　　　　
    K. Shibahara, T. Mizuno, L. Doowhan, Y. Miyamoto, H. Ono, K. Nakajima, S. Saitoh, K. Takenaga, K. Saitoh
    Optical Fiber Communication Conference (OFC 2018), Mar. 2018, English, Oral presentation
    [International presentation]
  • Beam propagation analysis of optical activity and circular dichroism in helically twisted photonic crystal fiber”, The 22nd Microoptics Conference　　　　　　　　　　　　　　　
    S. Nakano, T. Fujisawa, T. Sato, K. Saitoh
    The 22nd Microoptics Conference (MOC 2017), Nov. 2017, English, Oral presentation
    [International presentation]
  • Proposal of compact three-mode exchanger based on symmetric and asymmetric directional couplers with integrated mode rotator　　　　　　　　　　　　　　　
    T. Fujisawa, E. Taguchi, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    The 22nd Microoptics Conference (MOC 2017), Nov. 2017, English, Oral presentation
    [International presentation]
  • A Mach-Zehnder mode multi/demultiplexer based on Si/Silica hybrid PLC platform for WDM/MDM transmission　　　　　　　　　　　　　　　
    M. Kudo, S. Ohta, E. Taguchi, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    IEEE Photonics Conference (IPC 2017), Oct. 2017, English, Oral presentation
    [International presentation]
  • Development of fully three-dimensional wavefront matching method and its application to the design of ultrasmall Si mode converters　　　　　　　　　　　　　　　
    Y. Sawada, S. Makino, T. Fujisawa, K. Saitoh
    IEEE Photonics Conference (IPC 2017), Oct. 2017, English, Oral presentation
    [International presentation]
  • High spatial density six-mode seven-core fibre for repeated dense SDM transmission　　　　　　　　　　　　　　　
    T. Sakamoto, K. Saitoh, S. Saitoh, K. Shibahara, M. Wada, Y. Abe, A. Urushibara, K. Takenaga, T. Mizuno, T. Matsui, K. Aikawa, Y. Miyamoto, K. Nakajima
    European Conference on Optical Communications (ECOC 2017), Sep. 2017, English, Oral presentation
    [International presentation]
  • Group delay spread analysis of few-mode, coupled 3-core fibres: Optimum index profile and maximum transmission distance for strong coupling regime　　　　　　　　　　　　　　　
    K. Yoshida, T. Fujisawa, T. Sato, K. Saitoh
    European Conference on Optical Communications (ECOC 2017), Sep. 2017, English, Poster presentation
    [International presentation]
  • Mach-Zehnder mode/wavelength (de)multiplexer for WDM/MDM optical transmission　　　　　　　　　　　　　　　
    S. Ohta, T. Fujisawa, S. Makino, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    European Conference on Optical Communications (ECOC 2017), Sep. 2017, English, Oral presentation
    [International presentation]
  • High-forward-transmission all-optical diode based on cascaded L3 photonic crystal cavities　　　　　　　　　　　　　　　
    T. Sato, T. Fujisawa, K. Saitoh
    The 24th Congress of the International Commission for Optics (ICO-24), Sep. 2017, English, Oral presentation
    [International presentation]
  • A proposal of Mach-Zehnder mode multi/demultiplexer for WDM/MDM optical transmission system　　　　　　　　　　　　　　　
    S. Ohta, S. Makino, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, K. Nakajima, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2017, English, Poster presentation
    [International presentation]
  • A compact and low-loss GeSn electroabsorprtion modulator using vertical multimode interference for mid-infrared Ge-on-Si platform　　　　　　　　　　　　　　　
    M. Akie, T. Sato, M. Arai, T. Fujisawa, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2017, English, Poster presentation
    [International presentation]
  • Coupled W-type four-core fiber with low differential mode group delay for C+L band　　　　　　　　　　　　　　　
    D. Cheng, J. Tu, X. Zhou, K. Long, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2017, English, Poster presentation
    [International presentation]
  • Weakly-coupled and strongly-coupled multicore fibers　　　　　　　　　　　　　　　
    K. Saitoh, T. Fujisawa, T. Sato
    OptoElectronics and Communications Conference (OECC), Jul. 2017, English, Invited oral presentation
    [Invited], [International presentation]
  • Multicore fiber-based 5-mode multiplexer/demultiplexer　　　　　　　　　　　　　　　
    Y. Sasaki, H. Uemura, S. Nishimoto, K. Takenaga, K. Aikawa, S. Matsuo, T, Fujisawa, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2017, English, Oral presentation
    [International presentation]
  • Design and analysis of weakly- and strongly-coupled multicore fibers　　　　　　　　　　　　　　　
    K. Saitoh, T. Fujisawa, T. Sato
    OSA Advanced Photonics Congress (APC), Jul. 2017, English, Invited oral presentation
    [Invited], [International presentation]
  • Material analysis of GeSn/SiGeSn quantum wells based on many-body theory　　　　　　　　　　　　　　　
    T. Fujisawa, K. Saitoh
    IEEE Photonics Society Summer Topicals Meeting Series (SUM), Jul. 2017, English, Invited oral presentation
    [Invited], [International presentation]
  • Highly efficient GeSn electroabsorprtion modulator using higher-order-mode for mid-infrared Ge-on-Si platform　　　　　　　　　　　　　　　
    T. Sato, M. Akie, M. Arai, T. Fujisawa, K. Saitoh
    Conference on Lasers and Electro-Optics (CLEO 2017), May 2017, English, Oral presentation
    [International presentation]
  • 1-Pb/s (32 SDM/46 WDM/768 Gb/s) C-band dense SDM transmission over 205.6-km of single-mode heterogeneous multi-core fiber using 96-Gbaud PDM-16QAM channels　　　　　　　　　　　　　　　
    T. Kobayashi, M. Nakamura, F. Hamaoka, K. Shibahara, T. Mizuno, A. Aano, H. Kawakami, A. Isoda, M. Nagatani, H. Yamazaki, Y. Miyamoto, Y. Amma, Y. Sasaki, K. Takenaga, K. Aikawa, K. Saitoh, Y. Jung, D. J. Richardson, K. Pulverer, M. Bohn, Md. Nooruzzaman, T. Morioka
    Optical Fiber Communication Conference (OFC 2017), Mar. 2017, English, Oral presentation
    [International presentation]
  • Ultimately low-loss and compact Si wire 90° waveguide bend composed of clothoid and normal curves for dense optical interconnect PICs　　　　　　　　　　　　　　　
    S. Makino, M. Suga, T. Sato, T. Fujisawa, K. Saitoh
    Optical Fiber Communication Conference (OFC 2017), Mar. 2017, English, Oral presentation
    [International presentation]
  • One chip, PLC three-mode exchanger based on symmetric and asymmetric directional couplers with integrated mode rotator　　　　　　　　　　　　　　　
    T. Fujisawa, E. Taguchi, T. Sakamoto, T. Matsui, Y. Yamashita, K. Tsujikawa, K. Nakajima, K. Saitoh
    Optical Fiber Communication Conference (OFC 2017), Mar. 2017, English, Oral presentation
    [International presentation]
  • Scrambling-type three-mode multiplexer based on cascaded Y-branch waveguide with integrated mode rotator on PLC platform　　　　　　　　　　　　　　　
    T. Fujisawa, Y. Yamashita, T. Sakamoto, T. Matsui, S. Makino, K. Tsujikawa, K. Nakajima, K. Saitoh
    Optical Fiber Communication Conference (OFC 2017), Mar. 2017, English, Oral presentation
    [International presentation]
  • Heterogeneous 32-core fiber with square-lattice layout for high-density transmissions　　　　　　　　　　　　　　　
    X. Xie, J. Tu, K. Long, K. Saitoh
    Asia Communications and Photonics Conference (ACP 2016), Nov. 2016, English, Oral presentation
    [International presentation]
  • Ultrasmall silicon mode converters designed by wavefront matching method developed for waveguide discontinuity problem　　　　　　　　　　　　　　　
    S. Makino, T. Fujisawa, K. Saitoh
    IEEE Photonics Conference (IPC 2016), Oct. 2016, English, Oral presentation
    [International presentation]
  • A compact and low-loss PLC-based LP11a/LP11b mode rotator with curved trench structure　　　　　　　　　　　　　　　
    Y. Yamashita, S. Makino, T. Fujisawa, K. Saitoh, N. Hanzawa, T. Sakamoto, T. Matsui, K. Tsujikawa, F. Yamamoto, K. Nakajima
    IEEE Photonics Conference (IPC 2016), Oct. 2016, English, Oral presentation
    [International presentation]
  • A simple design method of reflection-suppressed photonic crystal cavity with asymmetric waveguides　　　　　　　　　　　　　　　
    T. Sato, S. Makino, T. Fujisawa, K. Saitoh
    IEEE Photonics Conference (IPC 2016), Oct. 2016, English, Oral presentation
    [International presentation]
  • Optimum design of 4LP-mode multicore fibers with low differential mode delay for high spatial multiplicity　　　　　　　　　　　　　　　
    Y. Tobita, T. Sakamoto, T. Matsui, S. Saitoh, K. Takenaga, K. Aikawa, T. Fujisawa, S. Aozasa, K. Nakajima, K. Saitoh
    IEEE Photonics Conference (IPC 2016), Oct. 2016, English, Oral presentation
    [International presentation]
  • A crosstalk analysis of heterogeneous 30-core fibre　　　　　　　　　　　　　　　
    T. Fujisawa, Y. Amma, S. Matsuo, K. Aikawa, K. Saitoh, M. Koshiba
    European Conference on Optical Communications (ECOC 2016), Sep. 2016, English, Oral presentation
    [International presentation]
  • Crosstalk-managed heterogeneous single-mode 32-core fibre　　　　　　　　　　　　　　　
    Y. Sasaki, R. Fukumoto, K. Takenaga, K. Aikawa, K. Saitoh, T. Morioka, Y. Miyamoto
    European Conference on Optical Communications (ECOC 2016), Sep. 2016, English, Oral presentation
    [International presentation]
  • Investigation on core selection approach for heterogeneous trench-assisted multi-core fiber　　　　　　　　　　　　　　　
    J. Tu, K. Long, K. Saitoh
    Specialty Optical Fibers (SOF), Jul. 2016, English, Oral presentation
    [International presentation]
  • High spatial density few-mode multi-core fiber for dense space division multiplexing transmission　　　　　　　　　　　　　　　
    T. Sakamoto, T. Matsui, K. Saitoh, S. Saitoh, K. Takenaga, S. Matsuo, Y. Tobita, N. Hanzawa, K. Nakajima, F. Yamamoto
    Photonic Networks and Devices, Jul. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • High core count single-mode multicore fiber for dense space division multiplexing　　　　　　　　　　　　　　　
    K. Aikawa, Y. Sasaki, Y. Amma, K. Takenaga, S. Matsuo, K. Saitoh, T. Morioka, Y. Miyamoto
    IEEE Summer Topicals Meeting Series (SUM), Jul. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • Multicore multimode fibers with high spatial density　　　　　　　　　　　　　　　
    K. Saitoh
    IEEE Summer Topicals Meeting Series (SUM), Jul. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • Excitation of LP 21b and LP02 modes with PLC-based tapered waveguide for mode-division multiplexing　　　　　　　　　　　　　　　
    Y. Yamashita, Y. Ishizaka, N. Hanzawa, T. Fujisawa, T. Sakamoto, T. Matsui, K. Tsujikawa, F. Yamamoto, K. Nakajima, K. Saitoh
    OptoElectronics and Communications Conference (OECC, Jul. 2016, English, Oral presentation
    [International presentation]
  • Impulse response analysis of air-hole added coupled six-core fibers　　　　　　　　　　　　　　　
    Y. Chida, T. Fujisawa, K. Saitoh
    OptoElectronics and Communications Conference (OECC, Jul. 2016, English, Oral presentation
    [International presentation]
  • High spatial density few-mode multi-core fiber with low differential mode delay characteristics　　　　　　　　　　　　　　　
    T. Sakamoto, T. Matsui, K. Saitoh, S. Saitoh, K. Takenaga, S. Matsuo, Y. Tobita, N. Hanzawa, K. Nakajima, F. Yamamoto
    OptoElectronics and Communications Conference (OECC, Jul. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • Single-mode multicore fiber for dense space division multiplexing　　　　　　　　　　　　　　　
    Y. Sasaki, Y. Amma, K. Takenaga, S. Matsuo, K. Aikawa, K. Saitoh, T. Morioka, Y. Miyamoto
    OptoElectronics and Communications Conference (OECC, Jul. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • 32-core dense SDM unidirectional transmission of PDM-16QAM signals over 1600 km using crosstalk-managed single-mode heterogeneous multicore transmission line　　　　　　　　　　　　　　　
    T. Mizuno, K. Shibahara, H. Ono, Y. Abe, Y. Miyamoto, F. Ye, T. Morioka, Y. Sasaki, Y. Amma, K. Takenaga, S. Matsuo, K. Aikawa, K. Saitoh, Y. Jung, D. J. Richardson, K. Pulverer, M. Bohn, M. Yamada
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2016, English, Oral presentation
    [International presentation]
  • Low-loss and low-DMD few-mode multi-core fiber with highest core multiplicity factor　　　　　　　　　　　　　　　
    T. Sakamoto, T. Matsui, K. Saitoh, S. Saitoh, K. Takenaga, T. Mizuno, Y. Abe, K. Shibahara, Y. Tobita, S. Matsuo, K. Aikawa, S. Aozasa, K. Nakajima, Y. Miyamoto
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2016, English, Oral presentation
    [International presentation]
  • Extremely small group delay spread six-core fiber with air-holes for mode-division-multiplexing: A principal mode analysis　　　　　　　　　　　　　　　
    T. Fujisawa, R. Tojo, S. Saitoh, S. Matsuo, K. Saitoh
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2016, English, Oral presentation
    [International presentation]
  • Space-time coding-assisted transmission for mitigation of MDL impact on mode-division multiplexed signals　　　　　　　　　　　　　　　
    K. Shibahara, T. Mizuno, H. Takara, H. Kawakami, D. Lee, Y. Miyamoto, S. Matsuo, K. Saitoh, M. Yamada
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2016, English, Oral presentation
    [International presentation]
  • High-density multicore fibers　　　　　　　　　　　　　　　
    K. Takenaga, S. Matsuo, K. Saitoh, T. Morioka, Y. Miyamoto
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2016, English, Invited oral presentation
    [Invited], [International presentation]
  • Broadband LP01/LP11 PLC-based mode multi/demultiplexer designed by wavefront matching method　　　　　　　　　　　　　　　
    Y. Yamashita, S. Makino, T. Fujisawa, K. Saitoh, N. Hanzawa, T. Sakamoto, T. Matsui, K. Tsujikawa, F. Yamamoto
    Frontiers in Optics/Laser Science Conference (FiO/LS), Oct. 2015, English, Oral presentation
    [International presentation]
  • A high-performance polarization splitter-rotator designed by wavefront matching method　　　　　　　　　　　　　　　
    S. Makino, T. Fujisawa, K. Saitoh
    Frontiers in Optics/Laser Science Conference (FiO/LS), Oct. 2015, English, Oral presentation
    [International presentation]
  • Impulse response analysis of strongly-coupled three-core fibers　　　　　　　　　　　　　　　
    T. Fujisawa, K. Saitoh
    Frontiers in Optics/Laser Science Conference (FiO/LS), Oct. 2015, English, Oral presentation
    [International presentation]
  • Comparison of homogeneous and heterogeneous 2LP-mode multicore fibers for high spatial multiplicity　　　　　　　　　　　　　　　
    Y. Tobita, T. Fujisawa, K. Saitoh, S. Matsuo, K. Takenaga
    Frontiers in Optics/Laser Science Conference (FiO/LS), Oct. 2015, English, Oral presentation
    [International presentation]
  • Large-mode-area all-solid photonic bandgap fibers for high power fiber lasers　　　　　　　　　　　　　　　
    L. Dong, F. Kong, G. Gu, T. Hawkins, M. Jones, J. Parsons, M. K.-Dong, K. Saitoh, B. Pulford, I. Dajani
    Frontiers in Optics/Laser Science Conference (FiO/LS), Oct. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • Mode dependent loss equaliser and impact of MDL on PDM-16QAM few-mode fibre transmission　　　　　　　　　　　　　　　
    T. Mizuno, H. Takara, K. Shibahara, Y. Miyamoto, M. Oguma, H. Ono, Y. Abe, T. Matsui, S. Matsuo, K. Saitoh, Y. Kimura
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Poster presentation
    [International presentation]
  • Demonstration of PLC-based six-mode multiplexer for mode division multiplexing transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, K. Tsujikawa, T. Fujisawa, Y. Ishizaka, F. Yamamoto
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Poster presentation
    [International presentation]
  • Measurement of inter-core crosstalk in few-mode multicore fibre　　　　　　　　　　　　　　　
    S. Saitoh, Y. Sasaki, K. Takenaga, M. Ohashi, K. Saitoh, K. Nakajima, S. Matsuo
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Poster presentation
    [International presentation]
  • A principal mode analysis of strongly-coupled 3-core fibres　　　　　　　　　　　　　　　
    T. Fujisawa, K. Saitoh
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Oral presentation
    [International presentation]
  • Quasi-single-mode homogeneous 31-core fibre　　　　　　　　　　　　　　　
    Y. Sasaki, S. Saitoh, Y. Amma, K. Takenaga, S. Matsuo, K. Saitoh, T. Morioka, Y. Miyamoto
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Oral presentation
    [International presentation]
  • Few-mode multi-core fibre with highest core multiplicity factor　　　　　　　　　　　　　　　
    T. Sakamoto, T. Matsui, K. Saitoh, S. Saitoh, K. Takenaga, S. Matsuo, Y. Tobita, N. Hanzawa, K. Nakajima, F. Yamamoto
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Oral presentation
    [International presentation]
  • High-spatial-multiplicity multi-core fibres for future dense space-division-multiplexing system　　　　　　　　　　　　　　　
    S. Matsuo, K. Takenaga, K. Saitoh, K. Nakajima, Y. Miyamoto, T. Morioka
    European Conference on Optical Communication (ECOC), Sep. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • High-count homogeneous multi-core fiber with analytical tool　　　　　　　　　　　　　　　
    F. Ye, K. Saitoh, T. Morioka
    International Symposium on Ultrafast Photonic Technologies/International Symposium on extremely advanced transmission technology (ISUPT/EXAT 2015), Jul. 2015, English, Poster presentation
    [International presentation]
  • Mode multi/demultiplexing with parallel waveguide for mode division multiplexing transmission　　　　　　　　　　　　　　　
    N. Hanzawa, T. Sakamoto, K. Saitoh, T. Matsui, K. Tsujikawa, T. Fujisawa, F. Yamamoto
    International Symposium on Ultrafast Photonic Technologies/International Symposium on extremely advanced transmission technology (ISUPT/EXAT 2015), Jul. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • Multicore fibers for large space multiplicity　　　　　　　　　　　　　　　
    K. Saitoh
    International Symposium on Ultrafast Photonic Technologies/International Symposium on extremely advanced transmission technology (ISUPT/EXAT 2015), Jul. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • Multicore Fibers for SDM Transmission　　　　　　　　　　　　　　　
    K. Saitoh
    Photonic Global Conference (PGC), Jun. 2015, English, Keynote oral presentation
    [Invited], [International presentation]
  • Design method of heterogeneous trench-assisted graded-index few-mode multi-core fiber with low differential mode delay　　　　　　　　　　　　　　　
    J. Tu, K. Saitoh, Y. Amma, K. Takenaga, S. Matsuo
    OptoElectronics and Communications Conference (OECC), Jun. 2015, English, Oral presentation
    [International presentation]
  • A high-performance polarization converter based on modulated silicon taper waveguide for polarization multiplexing designed by wavefront matching method　　　　　　　　　　　　　　　
    S. Makino, T. Fujisawa, K. Saitoh
    Conference on Lasers and Electro-Optics/Europe (CLEO/EUROPE), Jun. 2015, English, Poster presentation
    [International presentation]
  • Microscopic analysis of quantum-confined Stark effect of group IV quantum wells for mid-infrared Si-based electroabsorption modulators　　　　　　　　　　　　　　　
    T. Fujisawa, K. Saitoh
    Conference on Lasers and Electro-Optics (CLEO), May 2015, English, Oral presentation
    [International presentation]
  • Dense SDM (12-core × 3-mode) transmission over 527 km with 33.2-ns mode-dispersion employing low-complexity parallel MIMO frequency-domain equalization　　　　　　　　　　　　　　　
    K. Shibahara, T. Mizuno, H. Takara, A. Sano, H. Kawakami, D. Lee, Y. Miyamoto, H. Ono, M. Oguma, Y. Abe, T. Kobayashi, T. Matsui, R. Fukumoto, Y. Amma, T. Hosokawa, S. Matsuo, K. Saito, H. Nasu, T. Morioka
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2015, English, Oral presentation
    [International presentation]
  • High-density multicore fiber with heterogeneous core arrangement　　　　　　　　　　　　　　　
    Y. Amma, Y. Sasaki, K. Takenaga, S. Matsuo, J. Tu, K. Saitoh, M. Koshiba, T. Morioka, Y. Miyamoto
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2015, English, Oral presentation
    [International presentation]
  • Multicore Fiber Technology　　　　　　　　　　　　　　　
    K. Saitoh
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • High-count multi-core fibers for space-division multiplexing with propagation-direction interleaving　　　　　　　　　　　　　　　
    F. Ye, K. Saitoh, H. Takara, R. Asif, T. Morioka
    Optical Fiber Communication Conference and Exposition (OFC), Mar. 2015, English, Oral presentation
    [International presentation]
  • Multicore fiber-based mode multiplexer/demultiplexer　　　　　　　　　　　　　　　
    Y. Sasaki, H. Uemura, K. Takenaga, T. Uematsu, S. Nishimoto, K. Omichi, R. Goto, S. Matsuo, K. Saitoh
    SPIE Photonics West, Feb. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • Large mode area Yb-doped photonic bandgap fiber lasers　　　　　　　　　　　　　　　
    L. Dong, F. Kong, G. Gu, T. W. Hawkins, J. Parsons, M. Jones, C. D. Dunn, M. T. Kalichevsky-Dong, K. Saitoh, B. Pulford, I. Dajani
    SPIE Photonics West, Feb. 2015, English, Invited oral presentation
    [Invited], [International presentation]
  • Polarizing 50?m core Yb-doped photonic bandgap fiber　　　　　　　　　　　　　　　
    F. Kong, G. Gu, T. W. Hawkins, J. Parsons, M. Jones, C. D. Dunn, M. T. Kalichevsky-Dong, B. Pulford, I. Dajani, K. Saitoh, L. Dong
    SPIE Photonics West, Feb. 2015, English, Oral presentation
    [International presentation]
  • Multicore fiber for space division multiplexing　　　　　　　　　　　　　　　
    K. Saitoh
    Asia Communications and Photonics Conference (ACP), Nov. 2014, English, Invited oral presentation
    [Invited], [International presentation]
  • A new and simple method for crosstalk estimation in homogeneous trench-assisted multi-core fibers　　　　　　　　　　　　　　　
    F. Ye, J. Tu, K. Saitoh, K. Takenaga, S. Matsuo, T. Morioka
    Asia Communications and Photonics Conference (ACP), Nov. 2014, English, Oral presentation
    [International presentation]
  • Multicore fibre-based mode multiplexer/demultiplexer for three-mode operation of LP01, LP11a, and LP11b　　　　　　　　　　　　　　　
    K. Takenaga, H. Uemura, Y. Sasaki, S. Nishimoto, T. Uematsu, K. Omichi, R. Goto, S. Matsuo, K. Saitoh
    European Conference and Exhibition on Optical Communication (ECOC), Sep. 2014, English, Oral presentation
    [International presentation]
  • Four-mode PLC-based mode multi/demultiplexer with LP11 mode rotator on one chip for MDM transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, K. Tsujikawa, T. Uematsu, F. Yamamoto
    European Conference and Exhibition on Optical Communication (ECOC), Sep. 2014, English, Oral presentation
    [International presentation]
  • Few-mode multicore fibre with 36 spatial modes (Three modes (LP01, LP11a, LP11b)×12 cores)　　　　　　　　　　　　　　　
    Y. Sasaki, Y. Amma, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    European Conference and Exhibition on Optical Communication (ECOC), Sep. 2014, English, Invited oral presentation
    [Invited], [International presentation]
  • Theoretical investigation of inter-core crosstalk properties in homogeneous trench-assisted multi-core fibers　　　　　　　　　　　　　　　
    F. Ye, T. Morioka, J. Tu, K. Saitoh
    IEEE Photonics Society Summer Topical Meeting, Jul. 2014, English, Oral presentation
    [International presentation]
  • Few-mode multicore fiber for highly dense space-division multiplexing　　　　　　　　　　　　　　　
    Y. Sasaki, Y. Amma, K. Takenaga, N. Guan, S. Matsuo, K. Saitoh, M. Koshiba
    IEEE Photonics Society Summer Topical Meeting, Jul. 2014, English, Invited oral presentation
    [Invited], [International presentation]
  • Wavelength-dependent crosstalk in trench-assisted multi-core fibers　　　　　　　　　　　　　　　
    F. Ye, J. Tu, K. Saitoh, H. Takara, T. Morioka
    OptoElectronics and Communications Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), Jul. 2014, English, Oral presentation
    [International presentation]
  • Fused taper type fan-in/fan-out device for 12 core multi-core fiber　　　　　　　　　　　　　　　
    H. Uemura, K. Omichi, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    OptoElectronics and Communications Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), Jul. 2014, English, Oral presentation
    [International presentation]
  • Investigation of nonlinear characteristics in a 1-D slotted photonic crystal coupled resonator optical waveguide with modulated mode-gap　　　　　　　　　　　　　　　
    T. Sato, S. Makino, Y. Ishizaka, K. Saitoh
    OptoElectronics and Communications Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), Jul. 2014, English, Oral presentation
    [International presentation]
  • Investigation of nonlinear characteristics in CROW based on horizontally slotted nanobeam cavity　　　　　　　　　　　　　　　
    S. Makino, Y. Ishizaka, K. Saitoh
    OptoElectronics and Communications Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), Jul. 2014, English, Oral presentation
    [International presentation]
  • Strong light confinement in a metal-assisted silicon slot waveguide　　　　　　　　　　　　　　　
    Y. Ishizaka, M. Nagai, K. Saitoh
    OptoElectronics and Communications Conference and Australian Conference on Optical Fibre Technology (OECC/ACOFT 2014), Jul. 2014, English, Oral presentation
    [International presentation]
  • PLC-based three-mode multi/demultiplexer for mode division multiplexing transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, K. Tsujikawa, T. Uematsu, M. Koshiba, F. Yamamoto
    European Conference on Integrated Optics (ECIO 17th) and the MicroOptics Conference (MOC 19th), Jun. 2014, English, Invited oral presentation
    [Invited], [International presentation]
  • Multi-core to 7 single-core-fibers fan-out device with multi-core fiber pigtail connector　　　　　　　　　　　　　　　
    K. Omichi, H. Uemura, K. Sasaki, K. Takenaga, R. Goto, S. Matsuo, K. Saitoh, R. Yamauchi
    23rd International Conference on Optical Fiber Sensors (OFS23), Jun. 2014, English, Oral presentation
    [International presentation]
  • Yb-doped photonic bandgap fiber lasers with record core diameter　　　　　　　　　　　　　　　
    G. Gu, F. Kong, T. Hawkings, J. Parsons, M. Jones, C. Dunn, M. T. Kalichevsky-Dong, K. Saitoh, L. Dong
    Conference on Lasers and Electro-Optics (CLEO 2014), Jun. 2014, English, Oral presentation
    [International presentation]
  • 12-core×3-mode dense space division multiplexed transmission over 40 km employing multi-carrier signals with parallel MIMO equalization　　　　　　　　　　　　　　　
    T. Mizuno, T. Kobayashi, H. Takara, A. Sano, H. Kawakami, T. Nakagawa, Y. Miyamoto, Y. Abe, T. Goh, M. Oguma, T. Sakamoto, Y. Sasaki, I. Ishida, K. Takenaga, S. Matsuo, K. Saitoh, T. Morioka
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2014, English, Oral presentation
    [International presentation]
  • PLC-type LP11 mode rotator with single-trench waveguide for mode-division multiplexing transmission　　　　　　　　　　　　　　　
    T. Uematsu, N. Hanzawa, K. Saitoh, Y. Ishizaka, K. Masumoto, T. Sakamoto, T. Matsui, K. Tsujikawa, F. Yamamoto
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2014, English, Oral presentation
    [International presentation]
  • Dependence of crosstalk increase due to tight bend on core layout of multi-core fiber　　　　　　　　　　　　　　　
    T. Hayashi, T. Nakanishi, T. Sasaki, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2014, English, Oral presentation
    [International presentation]
  • Mode multiplexer/demultiplexer based on a partially elongated multi-core fiber　　　　　　　　　　　　　　　
    H. Uemura, Y. Sasaki, S. Nishimoto, T. Uematsu, K. Takenaga, K. Omichi, R. Goto, S. Matsuo, K. Saitoh
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2014, English, Oral presentation
    [International presentation]
  • PLC-based mode multi/demultiplexer for MDM transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, K. Tsujikawa, M. Koshiba, F. Yamamoto
    SPIE Photonics West, Feb. 2014, English, Invited oral presentation
    [Invited], [International presentation]
  • Structural dependence of nonlinear characteristics in coupled resonator optical waveguides based on slotted nanobeam cavities　　　　　　　　　　　　　　　
    S. Makino, Y. Ishizaka, K. Saitoh, M. Koshiba
    Frontiers in Optics 2013/Laser Science XXIX (FiO/LS), Oct. 2013, English, Oral presentation
    [International presentation]
  • 2x344 Tb/s propagation-direction interleaved transmission over 1500-km MCF enhanced by multicarrier full electric-field digital back-propagation　　　　　　　　　　　　　　　
    T. Kobayashi, H. Takara, A. Sano, T. Mizuno, H. Kawakami, Y. Miyamoto, K. Hiraga, Y. Abe, H. Ono, M. Wada, Y. Sasaki, I. Ishida, K. Takenaga, S. Matsuo, K. Saitoh, M. Yamada, H. Masuda, T. Morioka
    The 39th European Conference and Exhibition on Optical Communication (ECOC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Trench-assisted low-crosstalk few-mode multicore fiber　　　　　　　　　　　　　　　
    Y. Sasaki, Y. Ammma, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    The 39th European Conference and Exhibition on Optical Communication (ECOC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Crosstalk increase in tightly bent multi-core fiber due to power coupling mediated by cladding modes　　　　　　　　　　　　　　　
    T. Hayashi, T. Taru, T. Sasaki, K. Saitoh, M. Koshiba
    The 39th European Conference and Exhibition on Optical Communication (ECOC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Crosstalk suppressed hole-assisted 6-core fiber with cladding diameter of 125 um　　　　　　　　　　　　　　　
    T. Sakamoto, K. Saitoh, N. Hanzawa, K. Tsujikawa, L. Ma, M. Koshiba, F. Yamamoto
    The 39th European Conference and Exhibition on Optical Communication (ECOC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Three-mode PLC-type multi/demultiplexer for mode-division multiplexing transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, K. Tsujikawa, T. Uematsu, M. Koshiba
    The 39th European Conference and Exhibition on Optical Communication (ECOC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Surface plasmon nanocavities composed of metallic wall and 1-D photonic crystal　　　　　　　　　　　　　　　
    Y. Ishizaka, K. Saitoh, M. Koshiba
    IEEE Photonics Conference (IPC), Sep. 2013, English, Oral presentation
    [International presentation]
  • Large-mode-area fibers enabled by significant differential mode losses　　　　　　　　　　　　　　　
    L. Dong, F. Kong, T.W. Hawkins, G. Gu, P. Foy, K. Saitoh, K. Wei, B. Samson
    The 3rd Workshop on Speciality Optical Fibers and Their Applications (WSOF 2013), Aug. 2013, English, Oral presentation
    [International presentation]
  • Metallic wall-based plasmon nanocavities with 1-D photonic crystals　　　　　　　　　　　　　　　
    Y. Ishizaka, K. Saitoh, M. Koshiba
    IEEE Photonics Society Summer Topical Meeting, Jul. 2013, English, Oral presentation
    [International presentation]
  • A proposal of coupled resonator optical waveguides based on slotted nanobeam cavities　　　　　　　　　　　　　　　
    S. Makino, Y. Ishizaka, K. Saitoh, M. Koshiba
    IEEE Photonics Society Summer Topical Meeting, Jul. 2013, English, Oral presentation
    [International presentation]
  • Multicore fiber with ring structure　　　　　　　　　　　　　　　
    K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    IEEE Photonics Society Summer Topical Meeting, Jul. 2013, English, Invited oral presentation
    [Invited], [International presentation]
  • Web-structured all-solid PBG fiber　　　　　　　　　　　　　　　
    R. Goto, S. Matsuo, K. Matsubara, K. Saitoh
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Oral presentation
    [International presentation]
  • Fused taper type fan-in/fan-out device for multicore EDF　　　　　　　　　　　　　　　
    H. Uemura, K. Takenaga, T. Ori, S. Matsuo, K. Saitoh, M. Koshiba
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Oral presentation
    [International presentation]
  • Optimized design method for heterogeneous trench-assisted multi-core fiber　　　　　　　　　　　　　　　
    J. Tu, K. Saitoh, M. Koshiba, K. Takenaga, S. Matsuo
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Oral presentation
    [International presentation]
  • Propagation length and coupling characteristics of a hybrid plasmonic waveguide with a uniform silica layer　　　　　　　　　　　　　　　
    M. Nagai, Y. Ishizaka, K. Saitoh, M. Koshiba
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Oral presentation
    [International presentation]
  • Structural dependence of nonlinear characteristics in slot waveguides composed of photonic crystal nanobeam cavities　　　　　　　　　　　　　　　
    S. Makino, Y. Ishizaka, K. Saitoh, M. Koshiba
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Oral presentation
    [International presentation]
  • All-solid photonic bandgap fibers for fiber laser applications　　　　　　　　　　　　　　　
    K. Saitoh, S. Saitoh, M. Kashiwagi, S. Matsuo, L. Dong
    OptoElectronics and Communications Conference (OECC), Jul. 2013, English, Invited oral presentation
    [Invited], [International presentation]
  • All-solid photonic bandgap fiber with record mode area　　　　　　　　　　　　　　　
    F. Kong, K. Saitoh, D. Mcclane, T. Hawkins, P. Foy, G. Gu, L. Dong
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2013, English, Oral presentation
    [International presentation]
  • Investigation of crosstalk dependencies on bending radius of heterogeneous multicore fiber　　　　　　　　　　　　　　　
    Y. Sasaki, Y. Amma, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2013, English, Oral presentation
    [International presentation]
  • Low-loss and broadband PLC-type mode (de)multiplexer for mode-division multiplexing transmission　　　　　　　　　　　　　　　
    T. Uematsu, K. Saitoh, N. Hanzawa, T. Sakamoto, T. Matsui, K. Tsujikawa, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2013, English, Oral presentation
    [International presentation]
  • Recent progress on multi-core fiber and few-mode fiber　　　　　　　　　　　　　　　
    S. Matsuo, Y. Sasaki, I. Ishida, K. Takenaga, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2014), Mar. 2013, English, Invited oral presentation
    [Invited], [International presentation]
  • Multicore fiber with one-ring structur　　　　　　　　　　　　　　　
    S. Matsuo, Y. Sasaki, I. Ishida, K. Takenaga, K. Saitoh, M. Koshiba
    SPIE Photonics West 2013, Feb. 2013, English, Invited oral presentation
    [Invited], [International presentation]
  • Robust single-mode all solid photonic bandgap fibers with core diameter of 50 micron　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, T.W. Hawkins, D. McClane, G. Gu
    SPIE Photonics West 2013, Feb. 2013, English, Poster presentation
    [International presentation]
  • Design and fabrication of LMA low-bending loss leakage channel fibers　　　　　　　　　　　　　　　
    M. Pal, M. Paul, D. Ghosh, S. Bhadra, K. Saitoh
    Photonics Global Conference (PGC 2012), Dec. 2012, English, Oral presentation
    [International presentation]
  • Advanced optical fibers and their applications in fiber lasers　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, T. Hawkins, D. Mcclane, G. Gu
    Photonics Global Conference (PGC 2012), Dec. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Propagation characteristics of LN photonic wires　　　　　　　　　　　　　　　
    E. Saitoh, K. Saitoh, M. Koshiba
    Asia Communications and Photonics Conference (ACP 2012), Nov. 2012, English, Oral presentation
    [International presentation]
  • Advanced optical fibers and their applications in fiber lasers　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, T. Hawkins, G. Gu, Y. Dong
    Frontiers in Optics (FiO 2012), Oct. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Large-effective-area uncoupled few-mode multi-core fiber　　　　　　　　　　　　　　　
    Y. Sasaki, K. Takenaga, N. Guan, S. Matsuo, K. Saitoh, M. Koshiba
    European Conference and Exhibition on Optical Communication (ECOC 2011), Sep. 2012, English, Oral presentation
    [International presentation]
  • Investigation of longitudinal power decay of a MCF by using a 50-km weakly-coupled multi-core fibre　　　　　　　　　　　　　　　
    I. Ishida, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    European Conference and Exhibition on Optical Communication (ECOC 2011), Sep. 2012, English, Oral presentation
    [International presentation]
  • Practically deployable and effectively single-mode all-solid photonic bandgap fibre with an effective area of 1028 mm2　　　　　　　　　　　　　　　
    M. Kashiwagi, K. Saitoh, T. Ichige, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki
    European Conference and Exhibition on Optical Communication (ECOC 2011), Amsterdam, Sep. 2012, English, Poster presentation
    [International presentation]
  • 1.01-Pb/s (12 SDM/222 WDM/456 Gb/s) crosstalk-managed transmission with 91.4-b/s/Hz aggregate spectral efficiency　　　　　　　　　　　　　　　
    H. Takara, A. Sano, T. Kobayashi, H. Kubota, H. Kawakami, A. Matsuura, Y. Miyamoto, Y. Abe, H. Ono, K. Shikama, Y. Gotoh, K. Tsujikawa, Y. Sasaki, I. Ishida, K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba, T. Morioka
    European Conference and Exhibition on Optical Communication (ECOC 2011), Sep. 2012, English, Oral presentation
    [International presentation]
  • All-solid photonic bandgap fibers for high power lasers　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, P. Foy, T. Hawkins, D. Mcclane, G. Gu, Y. Dong
    SPIE Security+Defence, Sep. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Compact TE/TM-pass polarizer based on lithium niobate on insulator ridge waveguides　　　　　　　　　　　　　　　
    E. Saitoh, K. Saitoh, M. Koshiba
    IEEE Photonics Conference (IPC 2012), Sep. 2012, English, Oral presentation
    [International presentation]
  • A proposal of doubly coupled resonator optical waveguides　　　　　　　　　　　　　　　
    S. Makino, Y. Kawaguchi, K. Saitoh, M. Koshiba
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Poster presentation
    [International presentation]
  • Transmission characteristics of crossing slot-waveguides with finite core-height　　　　　　　　　　　　　　　
    Y. Ishizaka, Y. Kawaguchi, K. Saitoh, M. Koshiba
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Oral presentation
    [International presentation]
  • Large-effective-area heterogeneous trench-assisted twelve-core fiber under bending condition　　　　　　　　　　　　　　　
    J. Tu, K. Saitoh, M. Koshiba, K. Takenaga, S. Matsuo
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Oral presentation
    [International presentation]
  • Enlargement of effective area of effectively single-mode all-solid photonic bandgap fiber with low bending loss　　　　　　　　　　　　　　　
    T. Ichige, K. Saitoh, M. Kashiwagi, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Oral presentation
    [International presentation]
  • Compact polarization rotator based on surface plasmon porariton with low insertion loss　　　　　　　　　　　　　　　
    M. Komatsu, K. Saitoh, Masanori Koshiba
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Oral presentation
    [International presentation]
  • Recent progress in multi-core fiber design and analysis　　　　　　　　　　　　　　　
    M. Koshiba, K. Saitoh, K. Takenaga, S. Matsuo
    17th OptoElectronics and Communications Conference (OECC 2012), Jul. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • A large effective area few-mode multi-core fiber　　　　　　　　　　　　　　　
    K. Takenaga, Y. Sasaki, N. Guan, S. Matsuo, M. Kasahara, K. Saitoh, M. Koshiba
    IEEE Photonics Society Summer Topical Meeting (SUM 2012), Jul. 2012, English, Oral presentation
    [International presentation]
  • Homogeneous and heterogeneous multi-core fibers　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba, K. Takenaga, S. Matsuo
    IEEE Photonics Society Summer Topical Meeting (SUM 2012), Jul. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Large-core single-mode solid photonic bandgap fibers　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, P. Foy, T. Hawkins, D. Mcclane
    OSA Topical Meetings on Specialty Optical Fibers (SOF 2012), Jun. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Design and analysis of heterogeneous trench-assisted multi-core fiber under bending condition　　　　　　　　　　　　　　　
    J. Tu, K. Saitoh, M. Koshiba, K. Takenaga, S. Matsuo
    OSA Topical Meetings on Specialty Optical Fibers (SOF 2012), Jun. 2012, English, Oral presentation
    [International presentation]
  • Design of ultra-small mode-evolution type polarization rotator based on surface plasmon polariton　　　　　　　　　　　　　　　
    M. Komatsu, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano-Photonics (IPR 2012), Jun. 2012, English, Oral presentation
    [International presentation]
  • Design of doubly coupled resonator optical waveguides　　　　　　　　　　　　　　　
    S. Makino, Y. Kawaguchi, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano-Photonics (IPR 2012), Jun. 2012, English, Poster presentation
    [International presentation]
  • Experimental and numerical investigation of effective area of all-solid photonic bandgap fiber for high power delivery　　　　　　　　　　　　　　　
    M. Kashiwagi, K. Saitoh, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki
    Conference on Lasers and Electro-Optics Quantum Electronics and Laser Science Conference (CLEO/QELS 2012), May 2012, English, Oral presentation
    [International presentation]
  • Mode area scaling for high-power fiber lasers with all solid photonic bandgap fibers　　　　　　　　　　　　　　　
    L. Dong, K. Saitoh, F. Kong, P. Foy, T.W. Hawkins, D. McClane
    SPIE Defense, Security, and Sensing, Apr. 2012, English, Oral presentation
    [International presentation]
  • Mode-division multiplexed transmission with fiber mode couplers　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, S. Tomita, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2012), Mar. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Asymmetric parallel waveguide with mode conversion for mode and wavelength division multiplexing transmission　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, S. Tomita, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2012), Mar. 2012, English, Oral presentation
    [International presentation]
  • Characterisation of MC fibers: new techniques and challenges　　　　　　　　　　　　　　　
    K. Takenaga, S. Matsuo, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2012), Mar. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Large-effective-area uncoupled 10-core fiber with two-pitch layout　　　　　　　　　　　　　　　
    Y. Sasaki, K. Takenaga, Y. Arakawa, S. Tanigawa, S. Matsuo, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2012), Mar. 2012, English, Oral presentation
    [International presentation]
  • Highly bendable and effectively single-mode all-solid photonic bandgap fiber with large effective area　　　　　　　　　　　　　　　
    M. Kashiwagi, K. Saitoh, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2012), Mar. 2012, English, Oral presentation
    [International presentation]
  • Low-crosstalk multi-core fibers for long-haul transmission　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba, K. Takenaga, S. Matsuo
    SPIE Photonics West 2012, Jan. 2012, English, Invited oral presentation
    [Invited], [International presentation]
  • Multi-core fiber design and analysis　　　　　　　　　　　　　　　
    M. Koshiba, K. Saitoh, K. Takenaga, S. Matsuo
    European Conference and Exhibition on Optical Communication (ECOC 2011), Sep. 2011, English, Invited oral presentation
    [Invited], [International presentation]
  • A large effective area multi-core fiber with an optimized cladding thickness　　　　　　　　　　　　　　　
    K. Takenaga, Y. Arakawa, Y. Sasaki, S. Tanigawa, S. Matsuo, K. Saitoh, M. Koshiba
    European Conference and Exhibition on Optical Communication (ECOC 2011), Sep. 2011, English, Oral presentation
    [International presentation]
  • Case study of inter-core crosstalk of 7-core fiber depending on bending diameter　　　　　　　　　　　　　　　
    Y. Awaji, J. Sakaguchi, N. Wada, K. Saitoh
    IEEE Photonics Society Summer Topical Meeting (SUM 2011), Jul. 2011, English, Oral presentation
    [International presentation]
  • An architecture proposal of reconfigurable optical logic gates for BPSK signal　　　　　　　　　　　　　　　
    Y. Ishizaka, Y. Kawaguchi, K. Saitoh, M. Koshiba
    16th Optoelectronics and Communication Conference (OECC 2011), Jul. 2011, English, Oral presentation
    [International presentation]
  • A proposal of air-slot one-dimensional coupled resonator optical waveguides　　　　　　　　　　　　　　　
    Y. Kawaguchi, K. Saitoh, M. Koshiba
    16th Optoelectronics and Communication Conference (OECC 2011), Jul. 2011, English, Oral presentation
    [International presentation]
  • Length dependence of cutoff wavelength of trench-assisted multi-core fiber　　　　　　　　　　　　　　　
    Y. Arakawa, K. Takenaga, S. Tanigawa, Y. Sasaki, S. Matsuo, K. Saitoh, M. Koshiba
    16th Optoelectronics and Communication Conference (OECC 2011), Jul. 2011, English, Oral presentation
    [International presentation]
  • SM-multi-core fiber　　　　　　　　　　　　　　　
    K. Saitoh
    16th Optoelectronics and Communication Conference (OECC 2011), Jul. 2011, English, Invited oral presentation
    [Invited], [International presentation]
  • Design of one-dimensional photonic crystal coupled resonator optical waveguides embedded n air-slot waveguide　　　　　　　　　　　　　　　
    Y. Kawaguchi, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano-Photonics (IPR 2011), Jul. 2011, English, Oral presentation
    [International presentation]
  • Practically deployable and effectively single mode all-solid photonic bandgap fiber with large effective area　　　　　　　　　　　　　　　
    M. Kashiwagi, K. Saitoh, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki
    Conference on Lasers and Electro-Optics Quantum Electronics and Laser Science Conference (CLEO/QELS 2011), May 2011, English, Oral presentation
    [International presentation]
  • Demonstration of mode-division multiplexing transmission over 10 km two-mode fiber with mode coupler　　　　　　　　　　　　　　　
    N. Hanzawa, K. Saitoh, T. Sakamoto, T. Matsui, S. Tomita, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2011), Mar. 2011, English, Oral presentation
    [International presentation]
  • Reduction of crosstalk by trench-assisted multi-core fiber　　　　　　　　　　　　　　　
    K. Takenaga, Y. Arakawa, N. Guan, S. Matsuo, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2011), Mar. 2011, English, Oral presentation
    [International presentation]
  • Impact of chirp on spectral recoil of solitons in a defect-core photonic crystal fiber with two zero-dispersion wavelengths　　　　　　　　　　　　　　　
    S. Roy, D. Ghosh, S.K. Bhadra, K. Saitoh, M. Koshiba, G.P. Agrawal
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2011), Mar. 2011, English, Oral presentation
    [International presentation]
  • Design of large-mode-area microstructured fibers with low bending loss for fiber laser applications　　　　　　　　　　　　　　　
    K. Saitoh
    IEEE Photonics Society Winter Topical Meeting (WIN 2011), Jan. 2011, English, Invited oral presentation
    [Invited], [International presentation]
  • Strong infra-red radiation through passive dispersive wave generation and its control　　　　　　　　　　　　　　　
    S. Roy, D. Ghosh, S.K. Bhadra, K. Saitoh, M. Koshiba
    International Conference on Fiber Optics and Photonics (PHOTONICS 2010), Dec. 2010, English, Oral presentation
    [International presentation]
  • Limitation of effective area for large-mode area leakage channel fibers under bent condition　　　　　　　　　　　　　　　
    K. Saitoh, S.K. Varshney, K. Sasaki, L. Rosa, M. Pal, M. Paul, S. Bhadra
    35th Australian Conference on Optical Fiber Technology (ACOFT 2010), Dec. 2010, English, Oral presentation
    [International presentation]
  • Limitation of effective area for large-mode-area all-solid photonic bandgap fibers　　　　　　　　　　　　　　　
    K. Saitoh
    The 2nd Workshop on Specialty Optical Fibers and Their Applications (WSOF 2010), Oct. 2010, English, Invited oral presentation
    [Invited], [International presentation]
  • Optimization of large-mode-area tapered-index multi-core fibers with high differential mode bending loss for Ytterbium-doped fiber applications　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh
    European Conference and Exhibition on Optical Communication (ECOC 2010), Sep. 2010, English, Poster presentation
    [International presentation]
  • Design of all-optical XOR and AND logic gates based on multi-mode interference devices　　　　　　　　　　　　　　　
    Y. Ishizaka, Y. Kawaguchi, K. Saitoh, M. Koshiba
    International Conference on Advanced Optoelectronics and Lasers (CAOL 2010), Sep. 2010, English, Oral presentation
    [International presentation]
  • Higher-order mode suppression in bent largemode-area multi-layer cladding fibers　　　　　　　　　　　　　　　
    S. Tanigawa, K. Saitoh, K. Ichii, Y. Sugimoto, K. Takenaga, S. Matsuo, M. Fujimaki
    15th Optoelectronics and Communication Conference (OECC 2010), Jul. 2010, English, Oral presentation
    [International presentation]
  • Design and fabrication of F-doped large mode area leakage channel fiber　　　　　　　　　　　　　　　
    M. Pal, M.C. Paul, T. Mahanty, D. Ghosh, S.K. Bhadra, L. Rosa, K. Saitoh
    15th Optoelectronics and Communication Conference (OECC 2010), Jul. 2010, English, Oral presentation
    [International presentation]
  • Multi-core hole-assisted fibers for high core density space division multiplexing　　　　　　　　　　　　　　　
    K. Saitoh, T. Matsui, T. Sakamoto, M. Koshiba, S. Tomita
    15th Optoelectronics and Communication Conference (OECC 2010), Jul. 2010, English, Invited oral presentation
    [Invited], [International presentation]
  • Realistic squared-rods circular F-doped large-mode-area leakage channel fibers with low bending loss　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, M. Koshiba, M. Pal, M. Paul, D. Ghosh, T. Mahanty, S. Bhadra, L. Vincetti, S. Selleri
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano Photonics (IPR/SNP 2010), Jul. 2010, English, Oral presentation
    [International presentation]
  • Highly-nonlinear horizontal slot waveguides with low and flat dispersion　　　　　　　　　　　　　　　
    M. Komatsu, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano Photonics (IPR/SNP 2010), Jul. 2010, English, Oral presentation
    [International presentation]
  • Three-dimensional vector finite element analysis of leakage losses in one-dimensional photonic crystal coupled resonator optical waveguides　　　　　　　　　　　　　　　
    Y. Kawaguchi, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research, Silicon and Nano Photonics (IPR/SNP 2010), Jul. 2010, English, Oral presentation
    [International presentation]
  • Design principle for low bending losses in all-solid photonic bandgap fibers　　　　　　　　　　　　　　　
    T. Murao, K. Saitoh, K. Nagao, M. Koshiba
    Conference on Lasers and Electro-Optics Quantum Electronics and Laser Science Conference (CLEO/QELS 2010), May 2010, English, Oral presentation
    [International presentation]
  • Simple suppression technique for higher-order mode amplification in bent large mode area triple-cladding fibers　　　　　　　　　　　　　　　
    K. Saitoh, K. Ichii, K. Takenaga, S. Tanigawa, S. Matsuo, M. Fujimaki, L. Rosa, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2010), Mar. 2010, English, Poster presentation
    [International presentation]
  • Reduction of crosstalk by quasi-homogeneous solid multi-core fiber　　　　　　　　　　　　　　　
    K. Takenaga, S. Tanigawa, N. Guan, S. Matsuo, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2010), Mar. 2010, English, Oral presentation
    [International presentation]
  • Octagonal largemode-area leakage channel fiber with reduced bending loss　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, M. Koshiba, F. Poli, A. Cucinotta, S. Selleri, L. Vincetti, M. Pal, M. Paul, D. Ghosh, S. Bhadra
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2010), Mar. 2010, English, Poster presentation
    [International presentation]
  • Experimental verification of higher-order mode suppression in a bent large-mode-area multi-cladding fiber　　　　　　　　　　　　　　　
    K. Ichii, K. Saitoh, Y. Sugimoto, S. Tanigawa, S. Matsuo, M. Fujimaki
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2010), Mar. 2010, English, Oral presentation
    [International presentation]
  • Bend-insensitive and effectively single-moded all-solid photonic bandgap fibers with heterostructured cladding　　　　　　　　　　　　　　　
    T. Murao, K. Saitoh, T. Taru, T. Nagashima, K. Maeda, T. Sasaki, M. Koshiba
    European Conference and Exhibition on Optical Communication (ECOC 2009), Sep. 2009, English, Oral presentation
    [International presentation]
  • Design and application of all-solid microstructured optical fibers　　　　　　　　　　　　　　　
    K. Saitoh
    14th Optoelectronics and Communication Conference (OECC 2009), Jul. 2009, English, Invited oral presentation
    [Invited], [International presentation]
  • Effect of rod inaccuracy on genetic-algorithm-designed C-band photonic-crystal waveguide interleavers　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, K. Kakihara, M. Koshiba
    OSA Topical Meeting on Integrated Photonics and Nanophotonics Research and Applications (IPNRA 2009), Jul. 2009, English, Oral presentation
    [International presentation]
  • Design of ultra-small polarization splitter based on a resonant coupling between silicon wire and slot waveguide　　　　　　　　　　　　　　　
    M. Komatsu, K. Saitoh, K. Kakihara, M. Koshiba
    OSA Topical Meeting on Integrated Photonics and Nanophotonics Research and Applications (IPNRA 2009), Jul. 2009, English, Oral presentation
    [International presentation]
  • Bend-resistant, single-stage, S-band erbium-doped photonic crystal fiber amplifiers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba
    Conference on Lasers and Electro-Optics and International Quantum Electronics Conference (CLEO/IQEC 2009), May 2009, English, Oral presentation
    [International presentation]
  • Hollow-core photonic bandgap fibers with broadband negative dispersion slope　　　　　　　　　　　　　　　
    K. Saitoh, Z. Varallyay, K. Kakihara, M. Koshiba, R. Szipocs
    Conference on Lasers and Electro-Optics and International Quantum Electronics Conference (CLEO/IQEC 2009), May 2009, English, Poster presentation
    [International presentation]
  • Genetic-algorithm assisted design of C-band photonic-crystal waveguide interleavers using ring resonators　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, K. Kakihara, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2009), Mar. 2009, English, Poster presentation
    [International presentation]
  • Reversed dispersion slope photonic bandgap fibers and femtosecond pulse propagation　　　　　　　　　　　　　　　
    Z. Varallyay, K. Saitoh, A. Szabo, K. Kakihara, M. Koshiba, R. Szipocs
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2009), Mar. 2009, English, Poster presentation
    [International presentation]
  • Control of transmission band in all-solid photonic bandgap fibers with novel hybridized bandgap structure　　　　　　　　　　　　　　　
    K. Saitoh, T. Taru, T. Nagashima, T. Murao, K. Maeda, T. Sasaki, S. Varshney, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2009), Mar. 2009, English, Oral presentation
    [International presentation]
  • Erbium-doped, bend-insensitive, S-band photonic crystal fiber amplifiers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba, B.P. Pal
    International Conference on Fiber Optics and Photonics (PHOTONICS 2008), Dec. 2008, English, Oral presentation
    [International presentation]
  • Amplification characteristics of As2Se3 photonic crystal fibers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, Y. Tsuchida, M. Koshiba, R.K. Sinha
    International Conference on Fiber Optics and Photonics (PHOTONICS 2008), Dec. 2008, English, Oral presentation
    [International presentation]
  • Microstructured optical fibers: From design to applications　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    International Conference on Fiber Optics and Photonics (PHOTONICS 2008), Dec. 2008, English, Invited oral presentation
    [Invited], [International presentation]
  • Fundamental and high-order mode bending loss in leakage channel fibers　　　　　　　　　　　　　　　
    F. Poli, L. Vincetti, D. Passaro, A. Cucinotta, S. Selleli, L. Rosa, K. Saitoh, Y. Tsuchida, S.K. Varshney, M. Koshiba
    European Conference on Optical Communication (ECOC 2008), Sep. 2008, English, Poster presentation
    [International presentation]
  • Design and optimization of devices for C-band photonic-crystal waveguide interleaver with fattened pass-band　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, K. Kakihara, M. Koshiba
    OSA Topical Meetings on Coherent Optical Technologies and Applications/Integrated Photonics and Nanophotonics Research and Applications/Quantum Entanglement and Decoherence: 3rd International Conference on Quantum Information/Slow and Fast Lights (COTA/IP, Jul. 2008, English, Oral presentation
    [International presentation]
  • Single-mode large-mode-area leakage channel fibers with octagonal symmetry　　　　　　　　　　　　　　　
    L. Rosa, K. Saitoh, Y. Tsuchida, S.K. Varshney, M. Koshiba, F. Poli, D. Passaro, A. Cucinotta, S. Selleli, L. Vincetti
    OSA Topical Meetings on Coherent Optical Technologies and Applications/Integrated Photonics and Nanophotonics Research and Applications/Quantum Entanglement and Decoherence: 3rd International Conference on Quantum Information/Slow and Fast Lights (COTA/IP, Jul. 2008, English, Oral presentation
    [International presentation]
  • Design of ultra-small polarization splitter based on silicon wire waveguides　　　　　　　　　　　　　　　
    M. Komatsu, K. Saitoh, K. Kakihara, M. Koshiba
    OSA Topical Meetings on Coherent Optical Technologies and Applications/Integrated Photonics and Nanophotonics Research and Applications/Quantum Entanglement and Decoherence: 3rd International Conference on Quantum Information/Slow and Fast Lights (COTA/IP, Jul. 2008, English, Oral presentation
    [International presentation]
  • Design of single-mode leakage channel fibers with large-mode-area and low bending loss　　　　　　　　　　　　　　　
    Y. Tsuchida, K. Saitoh, S.K. Varshney, L. Rosa, M. Koshiba
    13th Optoelectronics and Communication Conference/33rd Australian Conference on Optical Fiber Technology (OECC/ACOFT 2008), Jul. 2008, English, Oral presentation
    [International presentation]
  • Highly efficient transmission between 1-D photonic crystal coupled cavity waveguides and straight waveguides　　　　　　　　　　　　　　　
    Y. Kawaguchi, K. Saitoh, M. Koshiba
    13th Optoelectronics and Communication Conference/33rd Australian Conference on Optical Fiber Technology (OECC/ACOFT 2008), Jul. 2008, English, Oral presentation
    [International presentation]
  • Theoretical design of multi-core photonic crystal fiber based 1×4 power splitters　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, R.K. Sinha, M. Koshiba
    13th Optoelectronics and Communication Conference/33rd Australian Conference on Optical Fiber Technology (OECC/ACOFT 2008), Jul. 2008, English, Oral presentation
    [International presentation]
  • Reduced lateral leakage losses of TM-like modes in silicon-on-insulator ridge waveguides　　　　　　　　　　　　　　　
    K. Kakihara, K. Saitoh, M. Koshiba
    13th Optoelectronics and Communication Conference/33rd Australian Conference on Optical Fiber Technology (OECC/ACOFT 2008), Jul. 2008, English, Oral presentation
    [International presentation]
  • Polygonal large-mode-area leakage channel fibers with reduced mode distortion　　　　　　　　　　　　　　　
    F. Poli, D. Passaro, A. Cucinotta, S. Selleli, L. Vincetti, L. Rosa, K. Saitoh, Y. Tsuchida, S.K. Varshney, M. Koshiba
    First Mediterranean Photonics Conference, Jun. 2008, English, Oral presentation
    [International presentation]
  • Nonlinear enhancement and dispersion management in bismuth microstructured fibers with a filled slot defect　　　　　　　　　　　　　　　
    K. Saitoh, K. Kakihara, S.K. Varshney, M. Koshiba
    Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2008), May 2008, English, Poster presentation
    [International presentation]
  • Design of low-loss one-dimensional planar-photonic crystal coupled-cavity waveguides　　　　　　　　　　　　　　　
    Y. Kawaguchi, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2008), Feb. 2008, English, Poster presentation
    [International presentation]
  • Structural optimization of ultimate low loss air-guiding photonic bandgap fibers　　　　　　　　　　　　　　　
    T. Murao, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2008), Feb. 2008, English, Poster presentation
    [International presentation]
  • Evaluation of induced form-birefringence and PMD in dispersion-compensating hole-assisted fibers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2008), Feb. 2008, English, Oral presentation
    [International presentation]
  • Single-polarization photonic crystal fibers based on resonant coupling phenomenon　　　　　　　　　　　　　　　
    Y. Tsuchida, K. Saitoh, M. Koshiba
    IEEE LEOS Winter Topicals Conference 2008, Jan. 2008, English, Oral presentation
    [International presentation]
  • Nonreciprocal microdisk resonators utilizing magnetic bubble domains in garnet film for ultra-compact optical waveguide isolators　　　　　　　　　　　　　　　
    K. Saitoh, N. Kono, K. Kakihara, M. Koshiba
    33rd European Conference on Optical Communication (ECOC 2007), Sep. 2007, English, Poster presentation
    [International presentation]
  • Broadband dispersion compensating hole-assisted fibers　　　　　　　　　　　　　　　
    K. Saitoh, S.K. Varshney, M. Koshiba
    33rd European Conference on Optical Communication (ECOC 2007), Sep. 2007, English, Poster presentation
    [International presentation]
  • Fluidic sensors based on photonic crystal fiber gratings: An emerging technology for realizing ultra-low thermo-responsive sensing platforms　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, S.K. Varshney, M. Koshiba
    Integrated Photonics and Nanophotonics Research and Applications and Slow and Fast Light (IPNRA/SL 2007), Jul. 2007, English, Oral presentation
    [International presentation]
  • Ultra-sensitive thermo-plasmonic oscillations in topologically-defected nano-cylinders: Merging photons and electrons for miniaturization of fluidic sensors　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, M. Koshiba
    Integrated Photonics and Nanophotonics Research and Applications and Slow and Fast Light (IPNRA/SL 2007), Jul. 2007, English, Oral presentation
    [International presentation]
  • A simple and practical design approach to realize band-pass photonic crystal fiber filters　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, N.J. Florous, M. Koshiba
    12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC 2007), Jul. 2007, English, Oral presentation
    [International presentation]
  • Resonant coupling in photonic crystal fibers　　　　　　　　　　　　　　　
    K. Saitoh, S.K. Varshney, M. Koshiba
    12th Optoelectronics and Communications Conference/16th International Conference on Integrated Optics and Optical Fiber Communication (OECC/IOOC 2007), Jul. 2007, English, Invited oral presentation
    [Invited], [International presentation]
  • 1.3 μm photonic crystal fiber Raman laser　　　　　　　　　　　　　　　
    S.K. Varshney, K. Sasaki, K. Saitoh, N.J. Florous, M. Koshiba
    Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2007), Jun. 2007, English, Poster presentation
    [International presentation]
  • Inline cryogenic temperature sensors based on photonic crystal fiber Bragg gratings in infiltrated with noble gases for harsh space applications　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, S.K. Varshney, Y. Tsuchida, T. Murao, M. Koshiba
    Conference on Lasers and Electro-Optics and the International Quantum Electronics Conference (CLEO/Europe-IQEC 2007), Jun. 2007, English, Poster presentation
    [International presentation]
  • All-fiber integrated assemblies based on the resonant tunneling effect in multi-core photonic band-gap fibers　　　　　　　　　　　　　　　
    K. Saitoh, N.J. Florous, S.K. Varshney, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Poster presentation
    [International presentation]
  • Radiation dose enhancement in photonic crystal fiber Bragg gratings: Towards photo-ionization monitoring of irradiation sources in harsh nuclear power reactors　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, T. Murao, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Poster presentation
    [International presentation]
  • Hollow nano-magnetic resonators mediated by photo-thermal effects: Towards the realization of highly-tunable mid-infrared negative permeability　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, K. Maeda, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Poster presentation
    [International presentation]
  • Thermo-plasmonic resonances in hybrid metallo-dielectric nano-particles: Towards tunable standalone nano-sensors　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, T. Murao, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Poster presentation
    [International presentation]
  • Tunable photonic crystal fiber couplers infiltrated with highly-thermo-responsive liquid crystal substances　　　　　　　　　　　　　　　
    K. Saitoh, N.J. Florous, S.K. Varshney, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Poster presentation
    [International presentation]
  • Experimental demonstration of Raman gain efficiency and chromatic dispersion of hole-assisted fiber: Influence of bend　　　　　　　　　　　　　　　
    S.K. Varshney, Y. Tsuchida, K. Sasaki, K. Saitoh, M. Koshiba
    Conference on Lasers and Electro-Optics and Quantum Electronics and Laser Science Conference (CLEO/QELS 2007), May 2007, English, Oral presentation
    [International presentation]
  • Large-mode-area single-mode holey fiber with low bending losses: Towards high power beam delivery systems　　　　　　　　　　　　　　　
    Y. Tsuchida, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Poster presentation
    [International presentation]
  • Inline cryogenic temperature sensor based on the excitation of localized plasmonic oscillations in metallic nanoparticles embedded into photonic crystal fibers　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Poster presentation
    [International presentation]
  • Proposal for miniaturized interleaver with flat-top passbands utilizing coupled-resonator optical waveguide rings in photonic crystals　　　　　　　　　　　　　　　
    N. Kono, N. Yokoi, K. Saitoh, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Oral presentation
    [International presentation]
  • Enhancement of the stimulated Brillouin scattering of higher-order acoustic modes in hole-assisted fibers　　　　　　　　　　　　　　　
    K. Saitoh, H. Nagano, N.J. Florous, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Poster presentation
    [International presentation]
  • Single-mode air-guiding photonic bandgap fiber with improved broadband transmission characteristics: The benefits of an anti-resonant core design　　　　　　　　　　　　　　　
    T. Murao, K. Saitoh, N.J. Florous, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Poster presentation
    [International presentation]
  • Design of large hollow-core photonic band-gap fibers with suppressed higher-order modes　　　　　　　　　　　　　　　
    K. Saitoh, N.J. Florous, T. Murao, M. Koshiba
    Optical Fiber Communication Conference and National Fiber Optic Engineers Conference (OFC/NFOEC 2007), Mar. 2007, English, Oral presentation
    [International presentation]
  • Optimizing the gain-profile of a realistic dispersion compensating photonic crystal fiber Raman amplifier by genetic algorithm　　　　　　　　　　　　　　　
    K. Sasaki, S.K. Varshney, K. Saitoh, M. Koshiba
    Eighth International Conference on Optoelectronics, Fiber Optics and Photonics (PHOTONICS 2006), Dec. 2006, English, Oral presentation
    [International presentation]
  • A novel photonic crystal fiber design for identical dispersion compensation over S+C+L wavelength bands　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, N.J. Florous, M. Koshiba
    Eighth International Conference on Optoelectronics, Fiber Optics and Photonics (PHOTONICS 2006), Dec. 2006, English, Oral presentation
    [International presentation]
  • Realization of large hollow-core photonic band-gap fibers with suppressed higher-order modes　　　　　　　　　　　　　　　
    K. Saitoh, N. Florous, T. Murao, M. Koshiba
    IEEE LEOS 19th Annual Meeting (LEOS 2006), Oct. 2006, English, Oral presentation
    [International presentation]
  • hermo-optical sensitivity analysis of highly-birefringent photonic crystal fibers with elliptically elongated air holes: Towards polarimetric-sensing fiber platforms　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, S. Varshney, M. Koshiba
    Optical Fiber Sensors Conference (OFS-18), Oct. 2006, English, Oral presentation
    [International presentation]
  • Non-proximity resonant tunneling in multi-core photonic band gap fibers: A revolutionary technology for all-fiber integrated assemblies　　　　　　　　　　　　　　　
    K. Saitoh, N.J. Florous, T. Murao, M. Koshiba, M. Skorobogatiy
    32nd European Conference on Optical Communication (ECOC 2006), Sep. 2006, English, Poster presentation
    [International presentation]
  • Multi-core photonic band-gap fiber splitters based on highly-selective non-proximity resonant coupling　　　　　　　　　　　　　　　
    K. Saitoh, N.J. Florous, M. Koshiba, M. Skorobogatiy
    The 11th OptoElectronics and Communications Conference (OECC 2006), Jul. 2006, English, Oral presentation
    [International presentation]
  • Hetero-structure photonic crystal demultiplexer based on ultra-low refractive index nanowires: Towards temperature-insensitive metamaterial platforms　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, M. Koshiba
    Photonic Metamaterials: From Random to Periodic Topical Meeting (META 2006), Jun. 2006, English, Oral presentation
    [International presentation]
  • Light-wave guidance through stratified photonic crystal metamaterials synthesized by super-inductive layers of metallic nano-strips　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, M. Koshiba
    Photonic Metamaterials: From Random to Periodic Topical Meeting (META 2006), Jun. 2006, English, Oral presentation
    [International presentation]
  • Transverse lightwave circuits in MOFs: Waveguides and resonator arrays　　　　　　　　　　　　　　　
    M. Skorobogatiy, K. Saitoh, M. Koshiba
    Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2006), May 2006, English, Oral presentation
    [International presentation]
  • Analysis of a broadband dispersion compensating photonic crystal fiber Raman amplifier　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba, P.J. Roberts
    Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2006), May 2006, English, Oral presentation
    [International presentation]
  • Design of twin core fluorine-doped photonic crystal fiber directional coupler incorporating elliptical air-holes　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, N. Florous, M. Koshiba
    Integrated Photonics Research and Applications/Nanophotonics Topical Meetings (IPRA/NANO 2006), Apr. 2006, English, Oral presentation
    [International presentation]
  • Optical characteristics of planar photonic crystal structures with elliptically-elongated veins: A generalized Fourier-Mathieu multipole expansion technique　　　　　　　　　　　　　　　
    N.J. Florous, K. Saitoh, M. Koshiba
    Integrated Photonics Research and Applications/Nanophotonics Topical Meetings (IPRA/NANO 2006), Apr. 2006, English, Oral presentation
    [International presentation]
  • Realization of polarization-independent splitters based on highly-birefringent dual core photonic crystal fibers　　　　　　　　　　　　　　　
    K. Saitoh, N. Florous, M. Koshiba
    Integrated Photonics Research and Applications/Nanophotonics Topical Meetings (IPRA/NANO 2006), Apr. 2006, English, Oral presentation
    [International presentation]
  • Artificial defects as ingredients for synthesizing holey fibers with large mode area and flat chromatic dispersion: An emerging technology for high speed transmission platforms　　　　　　　　　　　　　　　
    K. Saitoh, N. Florous, M. Koshiba
    Optical Fiber Communication Conference/National Fiber Optic Engineers Conference (OFC/NFOEC 2006), Mar. 2006, English, Poster presentation
    [International presentation]
  • Design of gain-flattened highly nonlinear photonic crystal fiber Raman amplifier using a single pump: A leakage loss approach　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, T. Fujisawa, M. Koshiba
    Optical Fiber Communication Conference/National Fiber Optic Engineers Conference (OFC/NFOEC 2006), Mar. 2006, English, Poster presentation
    [International presentation]
  • Numerical investigation of Raman amplification properties in photonic crystal fibers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba
    OSA Topical Meetings on Optical Amplifiers and Their Applications (OAA 2005), Aug. 2005, English, Oral presentation
    [International presentation]
  • Raman amplification properties of ultralow loss photonic crystal fibers　　　　　　　　　　　　　　　
    S.K. Varshney, K. Saitoh, M. Koshiba
    International Conference on Quantum Electronics 2005 and the Pacific Rim Conference on Lasers and Electro-Optics 2005 (IQEC/CLEO-PR 2005), Jul. 2005, English, Oral presentation
    [International presentation]
  • Bending-insensitive single-mode hole-assisted fibers with reduced splice loss　　　　　　　　　　　　　　　
    Y. Tsuchida, K. Saitoh, M. Koshiba
    Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science Conference (CLEO/QELS 2005), May 2005, English, Oral presentation
    [International presentation]
  • Novel bandpass filter based on a three-core photonic crystal fiber　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research (IPR 2005), Apr. 2005, English, Oral presentation
    [International presentation]
  • Directional coupling in hollow Bragg Fiber bundles　　　　　　　　　　　　　　　
    M. Skorobogatiy, K. Saitoh, M. Koshiba
    Optical Fiber Communications Conference (OFC 2005), Mar. 2005, English, Oral presentation
    [International presentation]
  • A design method for bending-insensitive single-mode holey fibers　　　　　　　　　　　　　　　
    K. Saitoh, Y. Tsuchida, M. Koshiba
    Optical Fiber Communications Conference (OFC 2005), Mar. 2005, English, Poster presentation
    [International presentation]
  • Resonant directional coupling of hollow Bragg fibers　　　　　　　　　　　　　　　
    M. Skorobogatiy, K. Saitoh, M. Koshiba
    SPIE Photonics West, Jan. 2005, English, Oral presentation
    [International presentation]
  • Highly-nonlinear dispersion-flattened photonic crystal fibers for supercontinuum generation　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    Ninth Opto-Electronics and Communications Conference/Third International Conference on Optical Internet (OECC/COIN 2004), Jul. 2004, English, Oral presentation
    [International presentation]
  • Localized acoustic waves propagating in photonic crystal fibers　　　　　　　　　　　　　　　
    I. Enomori, K. Saitoh, M. Koshiba
    Ninth Opto-Electronics and Communications Conference/Third International Conference on Optical Internet (OECC/COIN 2004), Jul. 2004, English, Oral presentation
    [International presentation]
  • Modeling of realistic air-core photonic band-gap fibers　　　　　　　　　　　　　　　
    K. Saitoh, N.A. Mortensen, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research (IPR 2004), Jun. 2004, English, Oral presentation
    [International presentation]
  • Dispersion and leakage properties of air-core photonic bandgap fibers　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    29th European Conference on Optical Communication and 14th International Conference on Integrated Optics and Optical Fibre Communication (ECOC/IOOC 2003), Sep. 2003, English, Oral presentation
    [International presentation]
  • Finite element design of single-polarization single-mode photonic crystal fibers　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research (IPR 2003), Jun. 2003, English, Oral presentation
    [International presentation]
  • Unique dispersion properties of photonic crystal fibers　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    2003 Joint Conference of the Fourth International Conference on Information, Communications and Signal Processing and Fourth Pacific-Rim Conference on Multimedia (ICICS-PCM 2003), Dec. 2002, English, Invited oral presentation
    [Invited], [International presentation]
  • Highly birefringent photonic bandgap fibers and its dispersion properties　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    International Topical Meeting on Microwave Photonics (MWP 2002), Nov. 2002, English, Poster presentation
    [International presentation]
  • Some “unusual” properties of waveguides and resonators related with a new class of photonic crystal structures　　　　　　　　　　　　　　　
    T. Kawashima, Y. Takagi, Y. Sasaki, K. Saitoh, Y. Ohtera, M. Koshiba, S. Kawakami
    Photonics and Electromagnetic Crystal Structures (PECS-IV), Oct. 2002, English, Oral presentation
    [International presentation]
  • Photonic bandgap fibers with high birefringence　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    OSA Topical Meetings on Integrated Photonics Research (IPR 2002), Jul. 2002, English, Oral presentation
    [International presentation]
  • Photonic bandgap crystal fibers with high birefringence　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    6th International Workshop on Finite Elements for Microwave Engineering, Jun. 2002, English, Oral presentation
    [International presentation]
  • Finite element solution of band structures in sonic crystals　　　　　　　　　　　　　　　
    M. Koshiba, K. Saitoh
    International Conference on New Piezoelectric Materials and High Performance Acoustic Wave Devices, Jan. 2002, English, Oral presentation
    [International presentation]
  • Full-vectorial finite element beam propagation method with perfectly matched layers for anisotropic optical waveguides　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba
    5th International Workshop on Finite Elements for Microwave Engineering, Jun. 2000, English, Oral presentation
    [International presentation]
  • Unified software for design of acoustooptic devices　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba, Y. Tsuji
    12th Conference on the Computation of Electromagnetic Fields (COMPUMAG 1999), Oct. 1999, English, Poster presentation
    [International presentation]
  • Numerical analysis of integrated acoustooptic tunable filters with weighted coupling　　　　　　　　　　　　　　　
    K. Saitoh, M. Koshiba, Y. Tsuji
    IEEE Ultrasonic Symposium, Oct. 1998, English, Oral presentation
    [International presentation]

Affiliated academic society

  • The Optical Society of Americal (OSA)　　　　　　　　　　　　　　　
  • The Institute of Electrical and Electronics Engineers (IEEE)　　　　　　　　　　　　　　　
  • 電子情報通信学会　　　　　　　　　　　　　　　
  • The Optical Society of America (OSA)　　　　　　　　　　　　　　　
  • The Institute of Electrical and Electronics Engineers (IEEE)　　　　　　　　　　　　　　　
  • Information and Communication Engineers　　　　　　　　　　　　　　　
  • The Institute of Electronics　　　　　　　　　　　　　　　

Research Themes

  • 結合型マルチモードマルチコアファイバによる革新的空間分割多重伝送技術に関する研究
    科学研究費助成事業
    01 Apr. 2022 - 31 Mar. 2027
    齊藤 晋聖
    日本学術振興会, 基盤研究(A), 北海道大学, 22H00201
  • Coupled multicore fiber technology for innovative optical fiber communications
    Grants-in-Aid for Scientific Research
    01 Apr. 2019 - 31 Mar. 2022
    Saitoh Kunimasa
    In this research, a multi-core fiber design technology that considers random phase errors caused by random structural perturbations and random polarization mode coupling, in addition to deterministically given perturbations such as bending and twisting of optical fibers has been developed. By comparing the experimental measurement results and the numerical simulation results of the spatial mode dispersion in coupled multi-core fibers, the relationship between the perturbation amount and the spatial mode dispersion in the actual transmission line was quantitatively clarified. In addition, the possibility of a coupled multi-mode multi-core fiber that combines multi-core technology and multi-mode technology was examined, and the conditions for enhancing random-mode coupling between different mode groups were clarified.
    Japan Society for the Promotion of Science, Grant-in-Aid for Scientific Research (B), Hokkaido University, 19H02183
  • 光ファイバ通信の限界を打ち破るマルチコアマルチモードフォトニクス　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(B)
    01 Apr. 2016 - 31 Mar. 2019
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • 革新的光ファイバの実用化に向けた研究開発（マルチコア光ファイバ技術と標準化指標の確立）　　　　　　　　　　　　　　　
    高度通信・放送研究開発委託研究
    Apr. 2013 - Mar. 2018
    齊藤 晋聖
    情報通信研究機構, Principal investigator, Competitive research funding
  • フォトニックバンドギャップ及びマルチコアによるファイバー高エネルギーパルス光源　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(A)
    31 May 2013 - 31 Mar. 2016
    白川 晃
    日本学術振興会, Competitive research funding
  • 光通信容量の飛躍的な拡大のための空間分割多重技術の基盤形成　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(C)
    01 Apr. 2013 - 31 Mar. 2016
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • 革新的光通信インフラの研究開発（マルチコアファイバ接続技術）　　　　　　　　　　　　　　　
    高度通信・放送研究開発委託研究
    Apr. 2011 - Mar. 2016
    齊藤 晋聖
    情報通信研究機構, Principal investigator, Competitive research funding
  • シングルコア光ファイバの限界を打ち破るマルチコアファイバ技術の基盤形成　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(B)
    Apr. 2010 - Mar. 2013
    小柴 正則
    日本学術振興会, Competitive research funding
  • 高出力ファイバ増幅器ならびにレーザのための希土類添加ダブルクラッド偏波保持フォトニック結晶ファイバの設計と作製　　　　　　　　　　　　　　　
    戦略的国際科学技術協力推進事業
    Apr. 2009 - Mar. 2013
    齊藤 晋聖
    科学技術振興機構, Principal investigator, Competitive research funding
  • ソリッドコアフォトニックバンドギャップファイバの高度利用技術の開発に関する研究　　　　　　　　　　　　　　　
    科学研究費補助金 若手研究(B)
    Apr. 2010 - Mar. 2012
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • 誘導ブリルアン散乱特性を考慮したホーリーファイバの性能評価法の確立とその応用　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(B)
    Apr. 2007 - Mar. 2009
    小柴 正則
    日本学術振興会, Competitive research funding
  • フォトニックバンドギャップファイバカップラを利用した新型光ファイバデバイスの開発　　　　　　　　　　　　　　　
    科学研究費補助金 若手研究(B)
    Apr. 2007 - Mar. 2009
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • 高非線形フォトニック結晶ファイバ形光デバイス実現のための理論構築と実証実験　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(B)
    Apr. 2005 - Mar. 2007
    小柴 正則
    日本学術振興会, Competitive research funding
  • 超高非線形分散フラットホーリーファイバの最適設計とその高速任意波長変換器への応用　　　　　　　　　　　　　　　
    科学研究費補助金 若手研究(B)
    Apr. 2005 - Mar. 2007
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • フォトニック結晶ファイバ解析設計支援環境の構築とファイバ形光デバイス開発への応用　　　　　　　　　　　　　　　
    科学研究費補助金 基盤研究(B)
    Apr. 2003 - Mar. 2005
    小柴 正則
    日本学術振興会, Competitive research funding
  • フォトニック結晶ファイバの高精度分散制御法の開発とその高速光通信システムへの応用　　　　　　　　　　　　　　　
    科学研究費補助金 若手研究(B)
    Apr. 2003 - Mar. 2005
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • 波長分割多重光通信用音響光学デバイス設計支援システムと新構造光波長ルータの開発　　　　　　　　　　　　　　　
    特別研究員奨励費
    Apr. 1999 - Mar. 2001
    齊藤 晋聖
    日本学術振興会, Principal investigator, Competitive research funding
  • Optical fiber communications　　　　　　　　　　　　　　　
    2001
    Competitive research funding

Industrial Property Rights

  • マルチコアファイバ
    Patent right, 佐々木 雄佑, 植村 仁, 齊藤 晋聖, 藤澤 剛, 株式会社フジクラ, 国立大学法人北海道大学
    特願2016-025262, 12 Feb. 2016
    特開2017-142467, 17 Aug. 2017
    特許第6335949号
    11 May 2018
    201803018936975013
  • マルチコアファイバ
    Patent right, 佐々木 雄佑, 植村 仁, 齊藤 晋聖, 藤澤 剛, 株式会社フジクラ, 国立大学法人北海道大学
    特願2016-037811, 29 Feb. 2016
    特開2017-156449, 07 Sep. 2017
    特許第6328676号
    27 Apr. 2018
    201803008242137937
  • マルチコアファイバ
    Patent right, 佐々木 雄佑, 植村 仁, 竹永 勝宏, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2016-505280, 25 Feb. 2015
    特許第6328745号
    27 Apr. 2018
    201803013788536348
  • モード合分波器及びモード多重通信システム
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 辻川 恭三, 齊藤 晋聖, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2014-124435, 17 Jun. 2014
    特開2015-026070, 05 Feb. 2015
    特許第6288772号
    16 Feb. 2018
    201803021411548905
  • マルチコアファイバ及び光ケーブル
    Patent right, 斉藤 翔太, 竹永 勝宏, 齊藤 晋聖, 藤澤 剛, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-163985, 21 Aug. 2015
    特開2017-040878, 23 Feb. 2017
    特許第6236638号
    10 Nov. 2017
    201803006514471545
  • 結合型マルチコアファイバ
    Patent right, 松尾 昌一郎, 竹永 勝宏, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2013-178445, 29 Aug. 2013
    特開2014-240943, 25 Dec. 2014
    特許第6192442号
    18 Aug. 2017
    201703010214587690
  • 光デバイス
    Patent right, 竹永 勝宏, 植村 仁, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-032337, 20 Feb. 2015
    特開2016-153863, 25 Aug. 2016
    特許第6181682号
    28 Jul. 2017
    201703004365941681
  • マルチコアファイバ
    Patent right, 佐々木 雄佑, 竹永 勝宏, 安間 淑通, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2016-506465, 27 Feb. 2015
    特許第6177994号
    21 Jul. 2017
    201703010440447353
  • マルチコアファイバ及び光ケーブル
    Patent right, 斉藤 翔太, 竹永 勝宏, 齊藤 晋聖, 藤澤 剛, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-030082, 18 Feb. 2015
    特開2016-151716, 22 Aug. 2016
    特許第6172642号
    14 Jul. 2017
    201703006237578704
  • 平面光導波路の製造方法及びモード合分波器
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 辻川 恭三, 齊藤 晋聖, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2013-211604, 09 Oct. 2013
    特開2015-075616, 20 Apr. 2015
    特許第6112606号
    24 Mar. 2017
    201703012736131397
  • マルチコアファイバ
    Patent right, 松尾 昌一郎, 竹永 勝宏, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-240656, 09 Dec. 2015
    特開2016-075938, 12 May 2016
    特許第6096268号
    24 Feb. 2017
    201703012862000656
  • 光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 辻川 恭三, 齊藤 晋聖, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2013-175954, 27 Aug. 2013
    特開2015-045704, 12 Mar. 2015
    特許第6095064号
    24 Feb. 2017
    201703009043846812
  • マルチコア光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 辻川 恭三, 齊藤 晋聖, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2013-175964, 27 Aug. 2013
    特開2015-045705, 12 Mar. 2015
    特許第6057340号
    16 Dec. 2016
    201703016249436307
  • マルチコアファイバ
    Patent right, 安間 淑通, 竹永 勝宏, 佐々木 雄佑, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-025211, 12 Feb. 2015
    特開2016-148761, 18 Aug. 2016
    特許第6050847号
    02 Dec. 2016
    201703017145138904
  • 光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 辻川 恭三, 齊藤 晋聖, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2013-175941, 27 Aug. 2013
    特開2015-045703, 12 Mar. 2015
    特許第6048890号
    02 Dec. 2016
    201703013107481284
  • 通信用マルチコアファイバ
    Patent right, 竹永 勝宏, 松尾 昌一郎, 佐々木 雄佑, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-077966, 06 Apr. 2015
    特開2015-163972, 10 Sep. 2015
    特許第5990616号
    19 Aug. 2016
    201603015962784087
  • モード合分波器
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 辻川 恭三, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2012-273680, 14 Dec. 2012
    特開2014-119556, 30 Jun. 2014
    特許第5988100号
    19 Aug. 2016
    201603012344402727
  • 光学入出力デバイス
    Patent right, 松尾 昌一郎, 竹永 勝宏, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2012-153848, 09 Jul. 2012
    特開2014-016472, 30 Jan. 2014
    特許第5990419号
    19 Aug. 2016
    201603002092947444
  • 光デバイス
    Patent right, 植村 仁, 竹永 勝宏, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2014-026624, 14 Feb. 2014
    特開2015-152774, 24 Aug. 2015
    特許第5986594号
    12 Aug. 2016
    201603017874930025
  • フォトニックバンドギャップファイバ、及び、それを用いたファイバレーザ装置
    Patent right, 柏木 正浩, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2013-052343, 14 Mar. 2013
    特開2014-179461, 25 Sep. 2014
    特許第5982307号
    05 Aug. 2016
    201603002832697390
  • フォトニックバンドギャップファイバ用母材の製造方法、フォトニックバンドギャップファイバの製造方法、フォトニックバンドギャップファイバ用母材、及び、フォトニックバンドギャップファイバ
    Patent right, 松尾 昌一郎, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2015-502933, 25 Feb. 2014
    特許第5916943号
    15 Apr. 2016
    201603017065819806
  • マルチコアファイバ
    Patent right, 松尾 昌一郎, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2012-134673, 14 Jun. 2012
    特開2013-167861, 29 Aug. 2013
    特許第5916525号
    15 Apr. 2016
    201603007308721294
  • マルチモード光ファイバ及びマルチモード光ファイバ設計方法
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2012-138475, 20 Jun. 2012
    特開2014-002297, 09 Jan. 2014
    特許第5875049号
    29 Jan. 2016
    201603020117521623
  • 高次モード励振器、高次モード遮断波長測定システム、高次モード励振方法及び高次モード遮断波長測定方法
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2012-138488, 20 Jun. 2012
    特開2014-002093, 09 Jan. 2014
    特許第5867724号
    15 Jan. 2016
    201603009648521250
  • マルチコアファイバ
    Patent right, 松尾 昌一郎, 竹永 勝宏, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2011-098687, 26 Apr. 2011
    特開2012-118495, 21 Jun. 2012
    特許第5855351号
    18 Dec. 2015
    201603001255919404
  • モード合分波器及びその設計方法
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 辻川 恭三, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2013-019075, 04 Feb. 2013
    特開2014-149469, 21 Aug. 2014
    特許第5842277号
    27 Nov. 2015
    201603004706286744
  • 光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 辻川 恭三, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2012-273698, 14 Dec. 2012
    特開2014-119558, 30 Jun. 2014
    特許第5843366号
    27 Nov. 2015
    201603016562165244
  • 通信用マルチコアファイバ
    Patent right, 竹永 勝宏, 松尾 昌一郎, 佐々木雄佑, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2011-193403, 05 Sep. 2011
    特開2013-054252, 21 Mar. 2013
    特許第5819682号
    09 Oct. 2015
    201503010083480466
  • マルチコアファイバ
    Patent right, 佐々木 雄佑, 竹永 勝宏, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2013-037810, 27 Feb. 2013
    特開2014-164269, 08 Sep. 2014
    特許第5808767号
    18 Sep. 2015
    201503019978799643
  • モード合分波器、光送受信装置及び光通信システム
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2011-170142, 03 Aug. 2011
    特開2013-037017, 21 Feb. 2013
    特許第5773521号
    10 Jul. 2015
    201503018583746340
  • マルチコアファイバ用ファンイン/ファンアウトデバイス
    Patent right, 植村 仁, 大道 浩児, 竹永 勝宏, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2013-127015, 17 Jun. 2013
    特開2015-001673, 05 Jan. 2015
    特許第5768090号
    26 Jun. 2015
    201503003653898102
  • ソリッドフォトニックバンドギャップファイバおよび該ファイバを用いたファイバモジュールおよびファイバアンプ、ファイバレーザ
    Patent right, 谷川 庄二, 竹永 勝宏, 柏木 正浩, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2010-217798, 28 Sep. 2010
    特開2012-073389, 12 Apr. 2012
    特許第5679420号
    16 Jan. 2015
    201503077015880401
  • モード合分波器、光送受信装置及び光通信システム
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2011-170139, 03 Aug. 2011
    特開2013-037016, 21 Feb. 2013
    特許第5660679号
    12 Dec. 2014
    201503042965052558
  • 光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2011-030942, 16 Feb. 2011
    特開2012-168448, 06 Sep. 2012
    特許第5660673号
    12 Dec. 2014
    201503008165974127
  • 光ファイバ
    Patent right, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2010-224617, 04 Oct. 2010
    特開2011-107687, 02 Jun. 2011
    特許第5605630号
    05 Sep. 2014
    201403045545699302
  • 光ファイバ
    Patent right, 坂本 泰志, 半澤 信智, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2011-029411, 15 Feb. 2011
    特開2012-168355, 06 Sep. 2012
    特許第5557290号
    13 Jun. 2014
    201403049144108870
  • 光通信システム、光送信機、光受信機、及び光通信方法
    Patent right, 半澤 信智, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2011-029061, 14 Feb. 2011
    特開2012-169857, 06 Sep. 2012
    特許第5553270号
    06 Jun. 2014
    201403065793049528
  • 光ファイバ
    Patent right, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2010-182702, 18 Aug. 2010
    特開2012-042632, 01 Mar. 2012
    特許第5481735号
    28 Feb. 2014
    201403059420490593
  • マルチコアファイバ
    Patent right, 松尾 昌一郎, 齊藤 晋聖, 小柴 正則, 株式会社フジクラ, 国立大学法人北海道大学
    特願2013-528873, 13 Dec. 2012
    特許第5468711号
    07 Feb. 2014
    201403014488752835
  • マルチクラッド光ファイバ、光ファイバモジュール、ファイバレーザ及びファイバアンプ
    Patent right, 谷川 庄二, 市井 健太郎, 竹永 勝宏, 齊藤 晋聖, 株式会社フジクラ, 国立大学法人北海道大学
    特願2010-550777, 04 Jun. 2010
    特許第5370780号
    27 Sep. 2013
    201403002035026299
  • 光ファイバ製造方法並びに光ファイバ母材及びその製造方法
    Patent right, 坂本 泰志, 松井 隆, 冨田 茂, 齊藤 晋聖, 小柴 正則, 日本電信電話株式会社, 国立大学法人北海道大学
    特願2010-033187, 18 Feb. 2010
    特開2011-170062, 01 Sep. 2011
    特許第5311417号
    12 Jul. 2013
    201303053752504053
  • 光ファイバ
    Patent right, 樽 稔樹, 永島 拓志, 佐々木 隆, 齊藤 晋聖, 住友電気工業株式会社, 国立大学法人北海道大学
    特願2008-256431, 01 Oct. 2008
    特開2010-085842, 15 Apr. 2010
    特許第5263667号
    10 May 2013
    201303039909225606
  • 光ファイバ
    Patent right, 永島 拓志, 樽 稔樹, 佐々木 隆, 齊藤 晋聖, 村尾 覚志, 住友電気工業株式会社, 国立大学法人北海道大学
    特願2009-282883, 14 Dec. 2009
    特開2011-123418, 23 Jun. 2011
    特許第5191982号
    08 Feb. 2013
    201303079481381820
  • 光ファイバ
    Patent right, 樽 稔樹, 永島 拓志, 佐々木 隆, 齊藤 晋聖, 住友電気工業株式会社, 国立大学法人北海道大学
    特願2009-046373, 27 Feb. 2009
    特開2010-204152, 16 Sep. 2010
    特許第5160478号
    21 Dec. 2012
    201303095017957871
  • 光ファイバ
    Patent right, 齊藤 晋聖, 住友電気工業株式会社, 国立大学法人北海道大学
    特願2009-046092, 27 Feb. 2009
    特開2010-197976, 09 Sep. 2010
    特許第5160477号
    21 Dec. 2012
    201303064712684417