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Si基板上半導体薄膜光集積回路の高効率と高温化動作に関する研究

Research Project

Project/Area Number 21J14548
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Review Section Basic Section 21060:Electron device and electronic equipment-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

FANG WEICHENG  東京工業大学, 工学院, 特別研究員(DC2)

Project Period (FY) 2021-04-28 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥1,500,000 (Direct Cost: ¥1,500,000)
Fiscal Year 2022: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2021: ¥800,000 (Direct Cost: ¥800,000)
Keywords薄膜光集積回路 / 表面活性化接合 / 熱抵抗 / 薄膜DFBレーザ / InPリブ導波路 / 化学機械研磨 / 薄膜集積光回路
Outline of Research at the Start

LSI電気配線の相互接続ボトルネックを克服するために、オンチップ光配線が有望だと考えられる。そこで本研究では、Si電気回路上にバックエンドプロセスにて形成可能な薄膜光配線を提案し、光源-導波路-受光器の基本集積回路の高効率と高温化動作の実現を目的とする。Siナノ薄膜層を介した異種材料接合手法の導入により、薄膜レーザの熱特性を改善し、高温動作を目指す。また、従来より低損失な導波路構造の導入を通じ、集積光回路の高効率データ伝送実験を行う。

Outline of Annual Research Achievements

令和4年度において、目的に(1)薄膜光集積回路の高温動作の実現(>100℃)、(2)薄膜光集積回路の高速動作(常温>20 Gbps)の実現を行った。
具体的には昨年実現したa-Siナノ薄膜を介した表面活性化常温接合を利用し、低熱抵抗を有する薄膜DFBレーザ、GaInAsP埋め込み導波路、p-i-n薄膜受光器(PD)をSi基板上に大面積かつ安定な集積プロセスを実現した。レーザのしきい値を低減するため、横方向光閉じ込めが上昇可能なリッジ構造も導入した。各温度下での静特性、動特性を評価した結果(1)静特性で、リッジ構造を有する低熱抵抗薄膜DFBレーザは低しきい値電流(0.27 mA)があり、PD側は従来構造(0.16 mA)の6倍くらいの最大光電流(0.95 mA)が得た。PD側の光電流(IPD)とLD側の注入電流(ILD)のスロープ効率(IPD/ILD) は従来(0.068 mA/mA)の約3倍程度(0.2 mA/mA )を得ることができた。また、最高環境動作温度は初めて120℃の連続波(CW)動作を確認した。(2)動特性で、小信号と大信号動作を25℃から80℃まで測定した。25℃と80℃での3-dB帯域は16.8 GHzと10.1 GHzを実現するとともに、信号伝送は25℃で25 Gbps、80℃で15 Gbpsを実現した。

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (12 results)

All 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (9 results) (of which Int'l Joint Research: 5 results)

  • [Journal Article] High-temperature and high-efficiency operation of a membrane optical link with a buried-ridge-waveguide bonded on a Si substrate2022

    • Author(s)
      Fang Weicheng、Takahashi Naoki、Horikawa Tsuyoshi、Ohiso Yoshitaka、Xue Ruihao、Katsumi Shunto、Amemiya Tomohiro、Nishiyama Nobuhiko
    • Journal Title

      Optics Express

      Volume: 30 Issue: 19 Pages: 34420-34420

    • DOI

      10.1364/oe.468192

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optical ReLU using membrane lasers for an all-optical neural network2022

    • Author(s)
      Takahashi Naoki、Fang Weicheng、Xue Ruihao、Okada Sho、Ohiso Yoshitaka、Amemiya Tomohiro、Nishiyama Nobuhiko
    • Journal Title

      Optics Letters

      Volume: 47 Issue: 21 Pages: 5715-5715

    • DOI

      10.1364/ol.471603

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Reduced thermal resistance of membrane Fabry-Perot laser bonded on Si through room-temperature, surface-activated bonding assisted by a-Si nano-film2022

    • Author(s)
      W. Fang, N. Takahashi, Y. Ohiso, T. Amemiya, N. Nishiyama
    • Journal Title

      IEEE Journal of Quantum Electronics

      Volume: 58 Issue: 2 Pages: 2000208-2000208

    • DOI

      10.1109/jqe.2022.3145870

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] High Temperature Operation of Membrane Photonic Integrated Circuits with Buried-Ridge-Waveguide on Si2022

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Tsuyoshi Horikawa, Yoshitaka Ohiso, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      28th International Semiconductor Laser Conference (ISLC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High Temperature and High Efficiency Operation of Membrane Photonic Integrated Circuits on Si Substrate2022

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Tsuyoshi Horikawa, Yoshitaka Ohiso, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      IEICE Society Conference 2022
    • Related Report
      2022 Annual Research Report
  • [Presentation] Proposal of ReLU activation function using III-V semiconductor membrane laser for optical neural network2022

    • Author(s)
      Naoki Takahashi, Weicheng Fang, Ruihao Xue, Shunto Katsumi, Yoshitaka Ohiso,Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      15th Pacific Rim Conference on Lasers and Electro-Optics (CLEO-PR 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low threshold current operation of membrane DR laser on Si with buried-ridge waveguide and ACPM grating for On-chip Optical Interconnection2022

    • Author(s)
      Naoki Takahashi, Weicheng Fang, Ruihao Xue, Shunto Katsumi, Yoshitaka Ohiso,Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      28th International Semiconductor Laser Conference (ISLC 2022)
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 110C high temperature operation of GaInAsP/Si membrane DFB Laser bonded by a-Si nano-film assisted surface activated bonding2022

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      The 69th Japan Society of Applied Physics Spring Meeting
    • Related Report
      2021 Annual Research Report
  • [Presentation] Characterization of InP-Rib Waveguide on Si Substrate for Membrane Photonic Integrated Circuits2022

    • Author(s)
      Ruihao Xue, Weicheng Fang, Naoki Takahashi, Shunto Katsumi, Yohsitaka Ohiso, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      The 69th Japan Society of Applied Physics Spring Meeting
    • Related Report
      2021 Annual Research Report
  • [Presentation] Thermal Resistance Reduction of GaInAsP/Si Membrane Laser bonded by Room Temperature Si-nano-film Assisted Surface Activated Bonding2021

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Yoshitaka Ohiso, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      Compound Semiconductor week 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Low Thermal Resistance of Membrane Distributed Feedback Laser Fabricated by Nano-film Assisted Room-temperature Surface Activated Bonding2021

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      11th International Symposium on Photonics and Electronics Convergence
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Thermal resistance reduction of membrane FP laser bonded by a-Si nano-film assisted surface activated bonding2021

    • Author(s)
      Weicheng Fang, Naoki Takahashi, Ruihao Xue, Shunto Katsumi, Tomohiro Amemiya, and Nobuhiko Nishiyama
    • Organizer
      The 82th Japan Society of Applied Physics Autumn Meeting
    • Related Report
      2021 Annual Research Report

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Published: 2021-05-27   Modified: 2024-03-26  

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