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Instantaneous Frequency Measurement by asymmetric double side-band optical modulation

Research Project

Project/Area Number 18H01454
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 21030:Measurement engineering-related
Research InstitutionWaseda University

Principal Investigator

Kawanishi Tetsuya  早稲田大学, 理工学術院, 教授 (40359063)

Co-Investigator(Kenkyū-buntansha) 稲垣 惠三  国立研究開発法人情報通信研究機構, ネットワークシステム研究所ネットワーク基盤研究室, 主任研究員 (60395085)
坂本 高秀  東京都立大学, システムデザイン研究科, 准教授 (70392727)
菅野 敦史  国立研究開発法人情報通信研究機構, ネットワークシステム研究所ネットワーク基盤研究室, 主任研究員 (20400707)
山本 直克  国立研究開発法人情報通信研究機構, ネットワークシステム研究所ネットワーク基盤研究室, 室長 (60328523)
Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2020: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2019: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000)
Fiscal Year 2018: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000)
Keywords光変調 / 広帯域 / 周波数 / 掃引 / 電波 / マイクロ波 / 高速測定 / マイクロ波フォトニクス
Outline of Final Research Achievements

The purpose of this study is to realize instantaneous frequency measurement for broadband signals using optical modulation techniques. We proposed a system that directly reads the frequency of a high-frequency signal from the ratio of the sidebands produced by the modulation, enabling measurement without being affected by the intensity fluctuations of the light source or the signal to be measured. In addition, we proposed a configuration that improves the measurement accuracy and realizes direct conversion of frequency to digital signal by parallelization. As a result, we were able to measure the instantaneous frequency of a broadband signal (13.5-14.5 GHz) with a sweep speed of 100 ns with a relative error of less than 0.1%. We believe that this research will realize the effective use of radio waves and open up a new field of signal measurement.

Academic Significance and Societal Importance of the Research Achievements

最近、広い帯域を使うレーダの開発が進んでいるが、時間、周波数の両方で見るとまだ利用されていない電波資源がある。しかしながら、高速で信号分析ができないことが障害となり、利活用に限界があった。本研究の成果はこれらのシステムにおいて時間・周波数軸で電波の空き状況を動的に検知し、電波の有効利用に大きな寄与をすることが期待される。また、周波数を高速で制御、測定する技術につながるので、科学分野での信号分析などへの応用も期待される。

Report

(4 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (16 results)

All 2021 2020 2019

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (13 results) (of which Int'l Joint Research: 3 results,  Invited: 13 results)

  • [Journal Article] 各種の伝送メディアの融合による将来アクセスネットワーク2020

    • Author(s)
      川西哲也
    • Journal Title

      レーザー研究

      Volume: 第 48 巻第 3 号 Pages: 116-120

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] THz and Photonic Seamless Communications2019

    • Author(s)
      Kawanishi Tetsuya
    • Journal Title

      Journal of Lightwave Technology

      Volume: 37 Issue: 7 Pages: 1671-1679

    • DOI

      10.1109/jlt.2019.2897042

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Photonic Systems and Devices for Linear Cell Radar2019

    • Author(s)
      Kawanishi Tetsuya、Kanno Atsushi、Tien Dat Pham、Umezawa Toshimasa、Yamamoto Naokatsu
    • Journal Title

      Applied Sciences

      Volume: 9 Issue: 3 Pages: 554-554

    • DOI

      10.3390/app9030554

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] ファイバ無線とテラヘルツ伝送技術についての展望2021

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 有無線融合ネットワークの将来と光ファイバ伝送の役割2020

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2020 Annual Research Report 2019 Annual Research Report
    • Invited
  • [Presentation] Simple pedestrian detection secondary radar using frequency doubling2020

    • Author(s)
      川西哲也
    • Organizer
      ICTON 2020
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 有無線融合ネットワークの将来と光ファイバ伝送の役割2020

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会 光応用電磁界計測研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] THz帯高速無線伝送の長距離化とその課題2020

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会 短距離無線通信研究会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] ミリ波・THz通信をささえる光エレクトロニクス2020

    • Author(s)
      川西哲也
    • Organizer
      レーザー学会年次大会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Photonics in 5G and beyond2020

    • Author(s)
      川西哲也
    • Organizer
      Asia Communications and Photonics Conference
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] THz Seamless Networks for Future Mobile Services2020

    • Author(s)
      川西哲也
    • Organizer
      IEEE International Conference on Plasma Sciences
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] テラヘルツネットワークに向けた高速無線研究の動向2019

    • Author(s)
      川西哲也
    • Organizer
      シンポジウム「テラヘルツ科学の最先端VI」
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] テラヘルツ・ミリ波による超広帯域無線2019

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会ソサイエティ大会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] ミリ波・テラヘルツネットワークに向けたフォトニクス技術2019

    • Author(s)
      川西哲也
    • Organizer
      電子情報通信学会テラヘルツ応用システム研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Simple secondary radar for non-line-of-sight pedestrian detection2019

    • Author(s)
      川西哲也
    • Organizer
      IEEE CAMA 2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Terahertz and photonics seamless networks2019

    • Author(s)
      川西哲也
    • Organizer
      2019 IEEE Globecom Workshops
    • Related Report
      2019 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2022-01-27  

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