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Feasibility study of terahertz-frequency arbitrary electromagnetic waveform generation

Research Project

Project/Area Number 21K18730
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionKyushu University

Principal Investigator

Kato Kazutoshi  九州大学, システム情報科学研究院, 教授 (10563827)

Project Period (FY) 2021-07-09 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2022: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Fiscal Year 2021: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Keywords光電変換デバイス / テラヘルツ波 / フォトミキシング / アレー集積 / THz級電磁波 / アレー光電変換 / THz繰り返しパルス / アンテナ集積フォトダイオード / テラヘルツ波発生 / 任意波形発生
Outline of Research at the Start

THz級電磁波の新たな応用分野開拓の必須技術として、THz級の周波数成分を持つ任意電磁波形を生成する技術を創成することを目的とする。本研究は、光波形生成と、アレー状フォトダイオードでの光電変換という、それぞれ独創的研究として先導してきた技術を、帯域補完型アレーという新奇コンセプトのもとで融合し、さらに独創性の高い任意電磁波形生成に挑戦するものである。またこの成果を用いて、未知領域であるサブピコ秒領域での物質やデバイスの電磁波応答という新分野開拓に発展する可能性を秘めた探索研究である。

Outline of Final Research Achievements

A technology for generating arbitrary electromagnetic waveforms with THz-frequency components has been developed. Specifically, a chip that integrates an array of photoelectric conversion devices connected to antennas designed for different center-gain frequencies was devised. In the design, the shape of each antenna was optimized. For the prototype fabrication, a 2D-3D conversion structure was devised and realized for the connection between the microstrip line and coplanar line, which is essential for the connection to the antenna.A THz self-delay interferometer was designed and constructed to evaluate THz electromagnetic waveforms by splitting the THz wave to be measured, adding a delay to one of the THz waves, and then combining the two waves.
The developed device was used to generate THz-frequency repetitive electromagnetic pulse waves, and its applicability to 1 THz-class wireless communications was examined based on waveform evaluation.

Academic Significance and Societal Importance of the Research Achievements

本研究の要素技術一つである光波形生成では、繰り返し300GHzの光パルス波生成および自己相関計による波形観測に成功している。もう一方の要素技術である光電変換では、アレー化した同じ特性を持つ複数のフォトダイオードにより100GHz~700GHzの電磁波生成と空間合波による強度増大を実現している。
本研究は、光波形生成と、アレー状フォトダイオードでの光電変換という、それぞれ独創的研究を、帯域補完型アレーという新奇コンセプトのもとで融合し任意電磁波形生成に挑戦するものである。またこの成果を用いて、未知領域であるサブピコ秒領域での物質やデバイスの電磁波応答という新分野開拓の可能性を秘めた探索研究である。

Report

(3 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • Research Products

    (18 results)

All 2023 2022 2021

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (12 results) (of which Int'l Joint Research: 12 results)

  • [Journal Article] Electronically Controlled Beam Steering of Terahertz Waves Driven by an Optical Phased Array2023

    • Author(s)
      近藤和哉, 土居諒, 車明, 三上裕也, 加藤和利
    • Volume
      J106-C
    • Issue
      2
    • Pages
      86-87
    • DOI

      10.14923/transelej.2022JCL0007

    • ISSN
      1881-0217
    • Year and Date
      2023-02-01
    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Generating and Enhancing THz Pulses Via an Antenna-Coupled Uni-Traveling-Carrier Photodiode Array2023

    • Author(s)
      Ming Che, Kazuya Kondo, Kazutoshi Kato
    • Journal Title

      IEEE Transactions on Terahertz Science and Technology

      Volume: May 3 Issue: 3 Pages: 1-7

    • DOI

      10.1109/tthz.2023.3251736

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Arrayed Photomixers for THz Beam-Combining and Beam-Steering2022

    • Author(s)
      Che Ming、Kondo Kazuya、Kanaya Haruichi、Kato Kazutoshi
    • Journal Title

      Journal of Lightwave Technology

      Volume: 40 Issue: 20 Pages: 6657-6665

    • DOI

      10.1109/jlt.2022.3204113

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Vibration insensitive THz wave interferometry for characterizing optical phase shifter2021

    • Author(s)
      Ming Che, Ruo Yamamoto, Hiroshi Ito, Tadao Ishibashi, Kazutoshi Kato
    • Journal Title

      OPTIK

      Volume: 242 Pages: 1-1

    • DOI

      10.1016/j.ijleo.2021.167203

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optically controlled THz power tuning based on interference at transmission line2021

    • Author(s)
      Ming Che, Haruichi Kanaya, Kazutoshi Kato
    • Journal Title

      OPTICS EXPRESS

      Volume: Vol. 29, No. 13 Issue: 13 Pages: 20034-20044

    • DOI

      10.1364/oe.423308

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Photonics-Assisted Terahertz-Wave Beam Steering and Its Application in Secured Wireless Communication2021

    • Author(s)
      Kazutoshi Kato
    • Journal Title

      Photonics

      Volume: 2022, 9, 9 Issue: 1 Pages: 1-1

    • DOI

      10.3390/photonics9010009

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Passive WR3 combiner with a reflector-integrated horn for 50 dB gain2023

    • Author(s)
      Ming Che, Kazutoshi Kato
    • Organizer
      Photonics West2023
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Novel Phase Stabilization Technique at Photomixing-BasedTerahertz Wave Phase Modulation System2022

    • Author(s)
      Amalina Athira Ibrahim, Takashi Shiramizu, Hanwei Chen, Yuya Mikami, Kazutoshi Kato
    • Organizer
      27th Microoptics Conference (MOC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] THz-Wave Beam Steering with 4-Channel Optical Phased Array2022

    • Author(s)
      Kazuya Kondo, Ming Che, Ryo Doi, Kazutoshi Kato
    • Organizer
      27th Microoptics Conference (MOC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First Demonstration of 405-nm Two-Tone Lightwave from GaN Laser for High Power Terahertz Wave Generation2022

    • Author(s)
      Qingjie Song, Yuya Mikam, Kazutoshi Kato
    • Organizer
      27th Microoptics Conference (MOC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Demonstration of Secure Wireless Transmission at 500 Mbit/s Based on 300-GHz Waves from Separated Transmitters2022

    • Author(s)
      Hanwei Chen, Yusuke Kawai, Takuya Yano, Yuya Mikami, Kazutoshi Kato
    • Organizer
      27th Microoptics Conference (MOC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Demonstration of Novel THz Wave Generation Based on a Fast Wavelength Switching Laser2022

    • Author(s)
      Takashi Shiramizu, Naoya Seiki, Ryo Matsumoto, Naoto Masutomi, Yuya Mikami,Yuta Ueda, Wataru Kobayashi, and Fumito Nakajima, Kazutoshi Kato
    • Organizer
      27th Microoptics Conference (MOC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Pilot-Lightwave-based Terahertz Wave Phase Stabilization2022

    • Author(s)
      Amalina Athira Ibrahim, Takashi Shiramizu, Shenghong Ye, Yuya Mikami, Kazutoshi Kato
    • Organizer
      28th International Semiconductor Laser Conference (ISLC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Demonstration of 500 Mbit/s Data Transmission Utilizing Secure Terahertz Communication Enabled by Phased Array UTC-PDs2022

    • Author(s)
      Hanwei Chen, Yusuke Kawai, Takuya Yano, Ssali Hussein, Kazutoshi Kato
    • Organizer
      Asia-Pacific Microwave Conference (APMC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] THz-wave intensity modulation by combining a high-speed wavelength-tunable laser and photomixing technique2022

    • Author(s)
      Naoya Seiki, Takashi Shiramizu, Ryo Matsumoto, Naoto Masutomi, Yuya Mikami, Yuta Ueda, Fumito Nakajima, Kazutoshi Kato
    • Organizer
      Asia-Pacific Microwave Conference (APMC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Terahertz-Wave Phase Modulation Enabled by Optical Interferometric Phase Stabilization2022

    • Author(s)
      Amalina Athira Ibrahim, Hanwei Chen, Takashi Shiramizu, Yuya Mikami, Kazutoshi Kato
    • Organizer
      Asia-Pacific Microwave Conference (APMC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Demonstration of 405-nm Two-Tone Lightwave for Terahertz-wave Generation at InGaN Photodiode2022

    • Author(s)
      Qingjie Song, Yuya Mikami, Kazutoshi Kato
    • Organizer
      Asia-Pacific Microwave Conference (APMC2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Performance Analysis of a Wilkinson Power Combiner-Fed Patch Antenna for 300-GHz Arrayed Photomixers2022

    • Author(s)
      Hussein Ssali, Ming Che, Kazutoshi Kato
    • Organizer
      10th International Japan-Africa Conference on Electronics, Communications, and Computations (JAC-ECC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research

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Published: 2021-07-13   Modified: 2024-01-30  

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