Research on spatial optical switching technologies to achieve ultra-large capacity, space division multiplexing optical networks

• Project/Area Number: 18H01443
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Basic Section 21020:Communication and network engineering-related
• Research Institution: Kagawa University
• Principal Investigator: Jinno Masahiko 香川大学, 創造工学部, 教授 (10503550)
• Project Period (FY): 2018-04-01 – 2022-03-31
• Project Status: Completed (Fiscal Year 2021)
• Budget Amount: ¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000); Fiscal Year 2021: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2020: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2019: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 光通信ネットワーク / 光スイッチ / 空間分割多重 / 光ネットワーク

Outline of Final Research Achievements

To achieve further capacity increase in a highly economical manner in future optical networks, the hierarchical optical network architecture that enables routing not only at a wavelength granularity but also at a core granularity is promising. We developed a unique core selective switch (CSS) as a building block for achieving scalable and economical optical cross-connects. We prototyped and evaluated CSSs that comprise a micro-lens array and a MEMS (micro-electro-mechanical system) mirror array. We experimentally confirmed that the CSS prototype showed a very low insertion loss (1.2 dB to 2.7 dB) and extremely low polarization-dependent loss (0.3 dB or less) over a very wide wavelength range of 130 nm.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果に対して、国際会議OECC/PSC 2019 Best Paper Award、国際会議ECOC 2019 Highly Scored Paper、 国際会議OECC 2020 Best Student Paper Award、電子情報通信学会OCS奨励賞ならびにチュートリアル論文賞が授与されており、その学術的意義は高く評価されている。本研究で研究開発したCSSを基本構成要素とする空間分割多重光ネットワークは、2030年前後に提供が想定されているBeyond 5G無線通信サービスが発生する膨大なデータを経済的な転送可能と期待され、その社会的なインパクトは極めて高いと考えられる。

Research Products

• [Journal Article] Core Selective Switch With Low Insertion Loss Over Ultra-Wide Wavelength Range for Spatial Channel Networks (2022)
  • Author(s): Jinno Masahiko、Urashima Itsuki、Ishikawa Tsubasa、Kodama Takahiro、Uchida Yudai
  • Journal Title: Journal of Lightwave Technology Volume: 40 Issue: 6 Pages: 1821-1828
  • DOI: 10.1109/jlt.2021.3131486
  • Peer Reviewed / Open Access
• [Journal Article] Enhancing the flexibility and functionality of SCNs: demonstration of evolution toward any-core-access, nondirectional, and contentionless spatial channel cross-connects [Invited] (2021)
  • Author(s): Jinno Masahiko、Ishikawa Tsubasa、Kodama Takahiro、Hasegawa Hiroshi、Subramaniam Suresh
  • Journal Title: Journal of Optical Communications and Networking Volume: 13 Issue: 8 Pages: D80-D80
  • DOI: 10.1364/jocn.423997
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Spatial Channel Cross-Connect Architectures for Spatial Channel Networks (2020)
  • Author(s): Jinno Masahiko
  • Journal Title: IEEE Journal of Selected Topics in Quantum Electronics Volume: 26 Issue: 4 Pages: 1-16
  • DOI: 10.1109/jstqe.2020.2975660
  • Peer Reviewed / Open Access
• [Journal Article] Feasibility Demonstration of Spatial Channel Networking Using SDM/WDM Hierarchical Approach for Peta-b/s Optical Transport (2020)
  • Author(s): Jinno Masahiko、Kodama Takahiro、Ishikawa Tsubasa
  • Journal Title: Journal of Lightwave Technology Volume: 38 Issue: 9 Pages: 2577-2586
  • DOI: 10.1109/jlt.2020.2972367
  • Peer Reviewed / Open Access
• [Journal Article] Principle, Design, and Prototyping of Core Selective Switch Using Free-Space Optics for Spatial Channel Network (2020)
  • Author(s): Jinno Masahiko、Kodama Takahiro、Ishikawa Tsubasa
  • Journal Title: Journal of Lightwave Technology Volume: 38 Issue: 18 Pages: 4895-4905
  • DOI: 10.1109/jlt.2020.3000304
  • Peer Reviewed / Open Access
• [Journal Article] Technoeconomic analysis of spatial channel networks (SCNs): benefits from spatial bypass and spectral grooming [Invited] (2020)
  • Author(s): Jinno Masahiko、Asano Yu、Azuma Yoshiki、Kodama Takahiro、Nakai Riku
  • Journal Title: Journal of Optical Communications and Networking Volume: 13 Issue: 2 Pages: A124-A124
  • DOI: 10.1364/jocn.403968
  • Peer Reviewed / Open Access
• [Journal Article] Network and Node Architectures for Introducing Elasticity and Spatial Parallelism into Optical Networks (2019)
  • Author(s): 神野 正彦
  • Volume: J102-B
  • Issue: 11
  • Pages: 891-911
  • DOI: 10.14923/transcomj.2018JBI0001
  • ISSN: 1344-4697
  • Year and Date: 2019-11-01
  • Peer Reviewed / Open Access
• [Journal Article] Spatial Channel Network (SCN): Opportunities and Challenges of Introducing Spatial Bypass Toward the Massive SDM Era [Invited] (2019)
  • Author(s): Jinno Masahiko
  • Journal Title: Journal of Optical Communications and Networking Volume: 11 Issue: 3 Pages: 1-14
  • DOI: 10.1364/jocn.11.000001
  • Peer Reviewed / Open Access
• [Presentation] SDM/WDM 階層型光クロスコネクトを用いた超広波長帯域・広帯域可変幅光チャネル伝送の実験的検証 (2022)
  • Author(s): 浦島一輝, 石川翼, 小玉崇宏, 内田雄大, 神野正彦
  • Organizer: 電子情報通信学会 フォトニックネットワーク研究会
• [Presentation] Core Selective Switch Supporting 15 Cores Per Port Using Bundled Three 5-Core Fibers (2022)
  • Author(s): Yudai Uchida, Tsubasa Ishikawa, Itsuki Urashima, Shoma Murao, Takahiro Kodama, Yasuki Sakurai, Ryuichi Sugizaki, and Masahiko Jinno
  • Organizer: Optical Fiber Communication Conference（OFC2022）
  • Int'l Joint Research
• [Presentation] Core Selective Switch Based Branching Unit Architectures and Efficient Bidirectional Core Assignment Scheme for Regional SDM Submarine System (2022)
  • Author(s): Kako Matsumoto and Masahiko Jinno
  • Organizer: Optical Fiber Communication Conference（OFC2022）
  • Int'l Joint Research
• [Presentation] Experimental Demonstration of Ultrawide Bandwidth-Range Optical Channel Provisioning Using SDM/WDM Hierarchical Optical Cross-Connect (2021)
  • Author(s): Itsuki Urashima, Tsubasa Ishikawa, Yudai Uchida, Takahiro Kodama, and Masahiko Jinno
  • Organizer: NETWORKS 2021
  • Int'l Joint Research
• [Presentation] 超広波長帯域，低挿入損失 5コア1×8コア選択スイッチ (2021)
  • Author(s): 浦島一輝，石川翼，内田 雄大，小玉崇宏，神野正彦
  • Organizer: 電子情報通信学会 フォトニックネットワーク研究会
• [Presentation] Core Selective Switch and its Application to Space Division Multiplexing Submarine Systems (2021)
  • Author(s): Masahiko Jinno
  • Organizer: PSC2021（Photonics in Switching and Computing 2021）
  • Int'l Joint Research / Invited
• [Presentation] 空間チャネルネットワーク (SCN)：アーキテクチャ・実現技術・インパクト (2021)
  • Author(s): 神野正彦
  • Organizer: レーザー学会学術講演会第41回年次大会
  • Invited
• [Presentation] Broadcast and Select Reconfigurable Spatial Add Drop Multiplexer for Spatial Channel Ring Network (2020)
  • Author(s): T. Ishikawa, T. Kodama, and M. Jinno
  • Organizer: Photonics in Switching and Computing (PSC) 2020
  • Int'l Joint Research
• [Presentation] Hierarchical SDM/WDM ROADM with Any Core Access for Spatial Channel Ring Networkpdf (2020)
  • Author(s): T. Ishikawa, T. Kodama, and M. Jinno
  • Organizer: OptoElectronics and Communications Conference (OECC) 2020
  • Int'l Joint Research
• [Presentation] Architectures of Spatial Add/Drop Multiplexer and Cross-Connect for Spatial Channel Networks (2020)
  • Author(s): M. Jinno
  • Organizer: Optical Network Design and Modelling (ONDM 2021)
  • Int'l Joint Research / Invited
• [Presentation] Enabling Technologies for Spatial Channel Networks (2020)
  • Author(s): M. Jinno
  • Organizer: Summer Topicals Meeting Series, Space Division Multiplexing (SDM) 2020
  • Int'l Joint Research / Invited
• [Presentation] Evolution Scenarios for Spatial Channel Networks (2020)
  • Author(s): m. Jinno
  • Organizer: OptoElectronics and Communications Conference (OECC) 2020
  • Int'l Joint Research / Invited
• [Presentation] Benefits of hierarchical spatial bypassing and spectral grooming in SCh networks.pdf (2020)
  • Author(s): M. Jinno
  • Organizer: European Conference on Optical Communication (ECOC 2020)
  • Int'l Joint Research / Invited
• [Presentation] Demonstration of Any-Core-Access Non-Directional Spatial Cross-Connects Based on Core Selective Switch with and without Core-Contention Constraint (2020)
  • Author(s): T. Kodama, T. Ishikawa, and M. Jinno
  • Organizer: European Conference on Optical Communication (ECOC 2020)
  • Int'l Joint Research
• [Presentation] 空間チャネルネットワーク（SCN） ～ 来たるべき空間多重時代に向けた空間バイパスの導入 ～ (2020)
  • Author(s): 神野正彦
  • Organizer: 電子情報通信学会 PN研究会
  • Invited
• [Presentation] 空間チャネルネットワークに向けた コア選択スイッチの検討 (2020)
  • Author(s): 石川翼，小玉崇宏，神野正彦
  • Organizer: 電子情報通信学会 OCS研究会
• [Presentation] Five-Core 1×6 Core Selective Switch and Its Application to Spatial Channel Networking (2020)
  • Author(s): Masahiko Jinno, Takahiro Kodama, and Tsubasa Ishikawa
  • Organizer: OFC 2020
  • Int'l Joint Research
• [Presentation] Spatial Channel Network (SCN): Introducing Spatial Bypass Toward the SDM Era (2020)
  • Author(s): Masahiko Jinno and Takahiro Kodama
  • Organizer: OFC 2020
  • Int'l Joint Research / Invited
• [Presentation] ２種類の新規構成空間チャネルクロスコネクトを用いた空間チャネルネッワークのコンセプト実証 (2020)
  • Author(s): 石川翼，小玉崇宏，神野正彦
  • Organizer: 電子情報通信学会 OCS研究会
• [Presentation] Opportunities, challenges, and solutions for Spatial Channel Networks (SCNs) toward the SDM abundant era (2019)
  • Author(s): Masahiko Jinno
  • Organizer: OECC/PSC 2019
  • Int'l Joint Research / Invited
• [Presentation] Architecture and Feasibility Demonstration of Core Selective Switch (CSS) for Spatial Channel Network (SCN) (2019)
  • Author(s): Masahiko Jinno, Kosuke Yamashita, and Yu Asano
  • Organizer: OECC/PSC 2019
  • Int'l Joint Research
• [Presentation] Spatial Channel Cross-Connect (SXC) Architectures and Their Enabling Technologies for Future Spatial Channel Networks (SCNs) (2019)
  • Author(s): Masahiko Jinno
  • Organizer: Advanced Photonics Congress 2019
  • Int'l Joint Research / Invited
• [Presentation] Demonstration of spatial channel networking using two types of hierarchical optical cross-connects (2019)
  • Author(s): Masahiko Jinno, Takahiro Kodama, Tsubasa Ishikawa, Kosuke Yamashita, Yu Asano, Riku Nakai, and Daiki Suzuki
  • Organizer: ECOC 2019
  • Int'l Joint Research
• [Presentation] 超並列光ノード・ネットワーク構成技術 (2019)
  • Author(s): 神野正彦，小玉崇宏
  • Organizer: 電子情報通信学会 PN研究会
  • Invited
• [Presentation] Required Link and Node Resource Comparison in Spatial Channel Networks (SCNs) Employing Modular Spatial Channel Cross-Connects (SXCs) (2019)
  • Author(s): Masahiko Jinno and Yu Asano
  • Organizer: Optical Fiber Communication Conference 2019
  • Int'l Joint Research
• [Presentation] Spatial Channel Network (SCN) architecture employing growable and reliable spatial channel cross-connects toward massive SDM era (2018)
  • Author(s): Jinno Masahiko
  • Organizer: Photonics in Switching and Computing 2018
  • Int'l Joint Research
• [Presentation] Added value of introducing spatial bypass into WDM/SDM networks: Gaussian-noise model analysis for spatially-bypassed and spectrally-groomed optical channels (2018)
  • Author(s): Jinno Masahiko
  • Organizer: 44th European Conference on Optical Communication
  • Int'l Joint Research
• [Presentation] Cost comparison of hierarchical optical cross-connect architectures for Spatial Channel Networks (SCNs) (2018)
  • Author(s): Yu Asano and Masahiko Jinno
  • Organizer: Asia Communications and Photonics Conference 2018
  • Int'l Joint Research
• [Patent(Industrial Property Rights)] コア選択スイッチ，及び光ノード装置 (2019)
  • Inventor(s): 神野 正彦
  • Industrial Property Rights Holder: 神野 正彦
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2019-034602
  • Filing Date: 2019