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Research on all-optical signal processing technology for nodes of optical OFDM communication

Research Project

Project/Area Number 19H02144
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21020:Communication and network engineering-related
Research InstitutionRitsumeikan University

Principal Investigator

Takiguchi Koichi  立命館大学, 理工学部, 教授 (70633254)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2020: ¥8,060,000 (Direct Cost: ¥6,200,000、Indirect Cost: ¥1,860,000)
Fiscal Year 2019: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000)
Keywords有線通信方式 / 光OFDM / 光信号処理 / 光デバイス / 集積光回路
Outline of Research at the Start

容量・距離の変動に応じて、必要最小限の帯域の柔軟な割当を行う適応型光ネットワーク通信が、資源の節約の観点から重要となっている。光OFDMは通信の周波数利用効率を向上できるため、本ネットワーク用の信号に適する。本研究では、小型・安定・低消費電力な集積光デバイスを用いて、本ネットワークのノードに必要で新規構成を持つ、信号の分岐挿入を行う可変容量光OFDM信号用全光処理型アド/ドロップマルチプレクサ、信号を任意の方路に分岐する可変容量光OFDM信号用全光処理型波長選択スイッチを実現することを目標とする。また、実現した光アド/ドロップマルチプレクサ、光波長選択スイッチを用いてシステム実験を行う。

Outline of Final Research Achievements

Optical orthogonal frequency division multiplexing (OFDM) utilizes orthogonal sub-carrier channels whose baud rates are equal to their frequency spacing. We developed an integrated-optic add/drop multiplexer (ADM) that could multiplex and demultiplex optical OFDM channels flexibly. We also realized an integrated-optic wavelength selective switch (WSS) that could demultiplex any combination of optical OFDM channels to various output ports.
In addition, we investigated an optical ADM/WSS configuration without high-speed optical gates, which were needed for extracting an effective time domain of an optical OFDM signal. We also adopted a compact optical coupler as a signal processing component for the optical OFDM signal. We carried out these two kinds of investigation with a view to simplifying and downsizing the optical ADM/WSS.

Academic Significance and Societal Importance of the Research Achievements

可変容量光OFDM信号用の新規構成の光ADM、光WSSを実現した。チャネル間ガードバンドを削減し、トラヒック、伝送距離の変動に応じてチャネル数、チャネルボーレート・変調フォーマットを自在に変化させることによって必要最小限の帯域を使用し、ネットワーク資源を節約できる次世代の適応型光ネットワークの実現に、主に光回路面から資する。また、全光信号処理・光OFDM通信分野などに新規研究領域をもたらせる。
長期的には、ストレスなく情報を扱えるユビキタス社会、持続可能な低炭素社会の実現に資する。また実用を見込める各種集積光回路技術を含み、社会、産業にも貢献できる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (29 results)

All 2022 2021 2020 2019 Other

All Journal Article (7 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (19 results) (of which Int'l Joint Research: 8 results,  Invited: 1 results) Remarks (2 results) Patent(Industrial Property Rights) (1 results)

  • [Journal Article] Direct demultiplexing method of terahertz-wave multiple carrier channels in terahertz domain utilizing terahertz-wave asymmetric interferometer2022

    • Author(s)
      K. Takiguchi and N. Nishio
    • Journal Title

      SPIE Proceedings

      Volume: 12000 Pages: 43-43

    • DOI

      10.1117/12.2608541

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Pulse amplitude modulation communication in terahertz-band using asymmetric Mach-Zehnder interferometer-type optical signal emulator2022

    • Author(s)
      K. Takiguchi and N. Nishio
    • Journal Title

      SPIE Proceedings

      Volume: 12000 Pages: 22-22

    • DOI

      10.1117/12.2607289

    • Related Report
      2021 Annual Research Report
  • [Journal Article] Gate-free integrated-optic tunable filter for demultiplexing various capacity optical OFDM signals2021

    • Author(s)
      K. Takiguchi and H. Masaki
    • Journal Title

      OSA Continuum

      Volume: 4 Issue: 8 Pages: 2319-2329

    • DOI

      10.1364/osac.431693

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Terahertz-wave Nyquist wavelength division multiplexing communication utilizing integrated-optic spectrum synthesizer2021

    • Author(s)
      K. Takiguchi
    • Journal Title

      SPIE Proceedings

      Volume: 11685 Pages: 19-19

    • DOI

      10.1117/12.2577087

    • Related Report
      2020 Annual Research Report
  • [Journal Article] 40 Gsymbol/s channel-based Nyquist wavelength division multiplexing communication in a terahertz-band using optical-domain reception signal processing2020

    • Author(s)
      K. Takiguchi
    • Journal Title

      OSA Continuum

      Volume: 3 Issue: 9 Pages: 2308-2319

    • DOI

      10.1364/osac.396436

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components2020

    • Author(s)
      K. Takiguchi
    • Journal Title

      Proceedings of SPIE

      Volume: 11309 Pages: 15-15

    • DOI

      10.1117/12.2544569

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Tunable optical OFDM demultiplexer utilizing slab star coupler-based optical DFT circuit2019

    • Author(s)
      K. Takiguchi and Y. Ikeyama
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 31 Issue: 16 Pages: 1327-1330

    • DOI

      10.1109/lpt.2019.2926334

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] THz帯マルチキャリア信号のTHz領域直接分離手法に関する基礎検討2022

    • Author(s)
      瀧口浩一, 西尾望
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Direct demultiplexing method of terahertz-wave multiple carrier channels in terahertz domain utilizing terahertz-wave asymmetric interferometer2022

    • Author(s)
      K. Takiguchi and N. Nishio
    • Organizer
      Photonics West 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pulse amplitude modulation communication in terahertz-band using asymmetric Mach-Zehnder interferometer-type optical signal emulator2022

    • Author(s)
      K. Takiguchi and N. Nishio
    • Organizer
      Photonics West 2022
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光ゲートを除去した集積型光フーリエ変換回路を用いた光OFDM信号分離の検討2021

    • Author(s)
      古河大和, 小田村夏樹, 瀧口浩一
    • Organizer
      電気関係学会関西連合大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 非対称マッハツェンダ干渉計型光信号エミュレータを用いたTHz帯パルス振幅変調通信2021

    • Author(s)
      瀧口浩一
    • Organizer
      電気関係学会関西連合大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 可変チャネルシンボルレート光OFDM 信号分離用ゲート除去型集積可変光フィルタ2021

    • Author(s)
      瀧口浩一, 正木秀明
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Integrated-optic gate-free tunable filter for demultiplexing various channel symbol rate OFDM signals2021

    • Author(s)
      K. Takiguchi and H. Masaki
    • Organizer
      Optical Fiber Communication (OFC) 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光ゲートなしで集積型光フーリエ変換フィルタのみを用いた光OFDMチャネル分離実験2021

    • Author(s)
      瀧口浩一, 正木秀明
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Terahertz-wave Nyquist wavelength division multiplexing communication utilizing integrated-optic spectrum synthesizer2021

    • Author(s)
      K. Takiguchi
    • Organizer
      Photonics West 2021
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ループバック構成を持つ10 GHz間隔光周波数コム処理用集積型光スペクトルシンセサイザ2020

    • Author(s)
      瀧口浩一, 正木秀明
    • Organizer
      電気関係学会関西連合大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 可変容量光OFDM信号サブキャリアチャネル分離用光回路2020

    • Author(s)
      瀧口浩一
    • Organizer
      電気関係学会関西連合大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] テラヘルツ帯ナイキストWDM通信の特性制限要因に関する検討2020

    • Author(s)
      瀧口浩一, 西尾望
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Integrated-optic spectrum synthesizer with loop-back paths for processing 10 GHz-spaced frequency comb2020

    • Author(s)
      K. Takiguchi
    • Organizer
      CLEO Pacific Rim 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Integrated-optic spectrum synthesis circuit for manipulating 64 frequency components2020

    • Author(s)
      K. Takiguchi
    • Organizer
      Photonics West 2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Flexible data rate THz-wave communication using Nyquist pulses and optical-domain reception signal processing2020

    • Author(s)
      K. Takiguchi and N. Nishio
    • Organizer
      OFC2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 可変光OFDM信号分離用集積型光フィルタの性能評価2020

    • Author(s)
      正木秀明、瀧口浩一
    • Organizer
      電子情報通信学会、総合大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ナイキストパルスと光領域受信信号処理を用いた可変容量テラヘルツ波通信2020

    • Author(s)
      瀧口浩一、西尾望
    • Organizer
      電子情報通信学会、総合大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] MMI coupler-type optical DFT filter for demultiplexing 25 Gsymbol/s sub-carrier-based optical OFDM signal2019

    • Author(s)
      K. Takiguchi
    • Organizer
      FiO/LS 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 4 x 25 Gsymbol/s光OFDM信号分離用MMIカプラ型DFT光フィルタ2019

    • Author(s)
      瀧口浩一
    • Organizer
      電気関係学会、関西連合大会
    • Related Report
      2019 Annual Research Report
  • [Remarks] 立命館大学 理工学部 電気電子工学科 瀧口浩一

    • URL

      https://research-db.ritsumei.ac.jp/rithp/k03/resid/S000982

    • Related Report
      2021 Annual Research Report 2020 Annual Research Report
  • [Remarks] 立命館大学 理工学部 電気電子工学科 瀧口浩一

    • URL

      http://research-db.ritsumei.ac.jp/Profiles/96/0009524/profile.html

    • Related Report
      2019 Annual Research Report
  • [Patent(Industrial Property Rights)] 直交周波数分割多重信号分離システム2021

    • Inventor(s)
      瀧口浩一
    • Industrial Property Rights Holder
      立命館大学
    • Industrial Property Rights Type
      特許
    • Industrial Property Number
      2021-205967
    • Filing Date
      2021
    • Related Report
      2021 Annual Research Report

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Published: 2019-04-18   Modified: 2023-01-30  

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