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Optical Discrete Time-Frequency Transform for Ultrafast Communications

Research Project

Project/Area Number 18H03788
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionTokyo Metropolitan University

Principal Investigator

Sakamoto Takahide  東京都立大学, システムデザイン研究科, 准教授 (70392727)

Co-Investigator(Kenkyū-buntansha) 梅沢 俊匡  国立研究開発法人情報通信研究機構, ネットワーク研究所フォトニックICT研究センター, 主任研究員 (20636047)
久利 敏明  国立研究開発法人情報通信研究機構, ネットワーク研究所レジリエントICT研究センター, 上席研究員 (30359070)
千葉 明人  群馬大学, 大学院理工学府, 准教授 (30435789)
呂 国偉  会津大学, コンピュータ理工学部, 上級准教授 (30599709)
川西 哲也  早稲田大学, 理工学術院, 教授 (40359063)
山本 直克  国立研究開発法人情報通信研究機構, ネットワーク研究所フォトニックICT研究センター, 副研究センター長 (60328523)
Project Period (FY) 2018-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥43,160,000 (Direct Cost: ¥33,200,000、Indirect Cost: ¥9,960,000)
Fiscal Year 2022: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2021: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2020: ¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2019: ¥19,370,000 (Direct Cost: ¥14,900,000、Indirect Cost: ¥4,470,000)
Fiscal Year 2018: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Keywords光変復調 / 光信号処理 / 超高速光変調 / 超高速光復調 / 光通信 / 光変調 / 光復調
Outline of Final Research Achievements

We have demonstrated the proposed optical time-frequency discrete orthogonal transformation technology and confirmed its capability of ultra-high-speed transmission and signal processing for high-bandwidth optical communications. We have demonstrated ultrafast and ultrabroadband optical modulation, demodulation, and coherent signal processing capability without relying on all-optical signal processing technology. Our work has opened up new possibilities for ultrafast optical communications beyond the THz level. We have demonstrated the feasibility of coherent optical transmission and reception at speeds ranging from 100 to several 100 Gb/s, a significant step towards practical implementation.
We have also explored the possibility of applying this technology to optical communication networks, and succeeded in demonstrating the principle of ultra-high optical signal processing functions that are essential for ultra-high optical communications, such as optical network node processing.

Academic Significance and Societal Importance of the Research Achievements

従来の超高速光通信、光信号処理では、超高精細光フィルタ技術の適用や,非線形光学を前提とし、光を光のまま操作する全光信号処理技術の適用は避けられないとさ れてきた。本研究は、帯域の限られた光電子技術のみ を用いても、適切な回路構築により、 超高速光変復調・信号処理能力を獲得できることを示したことになる。

Report

(2 results)
  • 2023 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • Research Products

    (8 results)

All 2018

All Presentation (8 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results)

  • [Presentation] Experimental Demonstration of Fiber-Nonlinearity Cancellation by Photonic Homodyne Down-Conversion in Conjugated-Paired Radio-on-Fiber System2018

    • Author(s)
      T. Sakamoto, G.-W. Lu, and N. Yamamoto
    • Organizer
      Conference on Laser and Electro Optics (CLEO 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Frequency Spacing and Offset Tunable Multiple-Frequency-Spaced Optical Comb Generation Using Multiple-Parallel Phase Modulator2018

    • Author(s)
      T. Sakamoto, and A. Chiba
    • Organizer
      the Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Optical Comb Sources Based on Optical Modulation Using Electro-Optic Effects for Photonic Measurements (invited)2018

    • Author(s)
      T. Sakamoto
    • Organizer
      European Advanced Materials Congress (EAMC2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Numerical investigation on spatial coherent matched detection for detection of spatially multiplexed signals2018

    • Author(s)
      T. Sakamoto, T. Umezawa, N. Yamamoto, and T. Kawanishi
    • Organizer
      SPIE Photonics West
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Numerical analysis on double frequency-spacing optical comb for optimization of RF signals driving I-Q MZM2018

    • Author(s)
      A. Chiba, Y. Moteki, N. Kobayashi, T. Sakamoto, and K. Takada
    • Organizer
      he Pacific Rim Conference on Lasers and Electro-Optics (CLEO-Pacific Rim)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 28Gbps PAM4 60GHz Radio over Fiber System by Injection Locking Two-Tone Light to Directly-Modulated Laser2018

    • Author(s)
      G.-W. Lu, R.S. Luis, H. Toda, J. Cui, T. Sakamoto, H. Wang, Y. Ji, and N. Yamamoto
    • Organizer
      Conference on Laser and Electro Optics (CLEO 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Direct coupling between 2D-PDA and triangular/square shape aligned MCF for universal SDM photoreceiver2018

    • Author(s)
      T. Umezawa, T. Sakamoto, A. Kanno, N. Yamamoto, T. Kawanishi
    • Organizer
      Conference on Laser and Electro Optics (CLEO 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 整合受信による高度光多重コヒーレント受信機への展開2018

    • Author(s)
      坂本高秀
    • Organizer
      電子情報通信学会ソサエティ大会
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2025-01-30  

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