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A study on integrated systems based on microring resonators for THz radiation sources

Research Project

Project/Area Number 17K06410
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionNational Institute of Information and Communications Technology

Principal Investigator

Furusawa Kentaro  国立研究開発法人情報通信研究機構, 未来ICT研究所フロンティア創造総合研究室, 主任研究員 (40392104)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywords光マイクロリング共振器 / テラヘルツ / 窒化シリコン / 微小光共振器 / 非線形光学効果 / 電子デバイス・機器 / 光源技術
Outline of Final Research Achievements

This study aimed at development of a novel type of terahertz light sources using high-Q microresonators and characterization of frequency stabilities of such light sources. In device fabrication, the hot-wire CVD method was used, demonstrating the opportunities offered by a low-stress low-temperature deposition technique for microresonator devices. Terahertz radiation up to 0.3 THz was successfully generated using a mode-locked microcomb source based on SiN microresonators, combined with a uni-travelling carrier photodiode (UTC-PD). The frequency stabilities were characterized based on the methods that are compatible with the microwave frequency standards. These results pave the way for realization of compact narrow linewidth terahertz sources via heterogeneous integration, useful for telecommunication and high frequency measurement.

Academic Significance and Societal Importance of the Research Achievements

CMOSコンパチブルな材料であるSiNを用いた高Q値微小光共振器デバイスを実現するための作製技術は高温堆積法に限られており、応力によるデバイスの自発的損傷などの課題があった。低温堆積法を用いた低応力デバイスの作製は、作製プロセスを簡便化できるだけでなく、デバイスの信頼性の向上にも寄与できると考えられる。また、100 mW以下の励起光パワーで発生したマイクロコムのビート信号を利用することで高効率なテラヘルツ発生を実証し、狭線幅のテラヘルツ信号が発生できることを示した。これらの成果から、将来の高精度高周波計測技術に供する小型テラヘルツ光源を開発していく上で重要な知見が得られた。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018 2017

All Presentation (8 results) (of which Int'l Joint Research: 3 results,  Invited: 1 results)

  • [Presentation] 光基準信号伝送を利用した微小光共振器の分散測定2020

    • Author(s)
      古澤健太郎、諸橋功、長野重夫、熊谷基弘、関根徳彦、笠松章史
    • Organizer
      電子情報通信学会 第5回光ファイバ応用技術研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] 窒化シリコンリング型光共振器からハイパーパラメトリック発振の観測2019

    • Author(s)
      古澤健太郎、 関根徳彦、 笠松章史、 鵜澤佳徳
    • Organizer
      第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Microcomb light source for terahertz measurement2019

    • Author(s)
      Kentaro Furusawa and Norihiko Sekine
    • Organizer
      Philippine-Japan Conference on Photonics and Optical Materials
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hot-wire CVD based SiN films for linear and nonlinear photonics device applications2018

    • Author(s)
      Kentaro Furusawa, Yoshimi Yamashita, Kanna Aoki, Norihiko Sekine, Akifumi Kasamatsu, Yoshinori Uzawa
    • Organizer
      Advanced Solid-state Lasers 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] cat-CVD法によるSiN膜を用いた光リング共振器の光学特性2018

    • Author(s)
      古澤健太郎、山下良美、青木画奈、関根紀彦、笠松章史、鵜澤佳徳
    • Organizer
      第79回応用物理学会秋季学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] マイクロリング共振器を用いた光周波数コム光源の開発~小型テラヘルツ波光源に向けて~2018

    • Author(s)
      古澤健太郎
    • Organizer
      第18回ミリ波サブミリ波受信機ワークショップ
    • Related Report
      2017 Research-status Report
  • [Presentation] 導波路型微小光共振器における光周波数コム発生の閾値検討2017

    • Author(s)
      古澤健太郎, 関根徳彦, 笠松章史, 鵜澤 佳徳
    • Organizer
      第34回「センサ・マイクロマシンと応用システム」
    • Related Report
      2017 Research-status Report
  • [Presentation] Microring resonator based frequency comb sources for compact continuous-wave THz generators2017

    • Author(s)
      K. Furusawa, N. Sekine, A. Kasamatsu, and Y. Uzawa
    • Organizer
      42 International Conference on Infrared, Millimeter and Terahertz Waves (IRMMW-THz 2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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