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All optical switching devices based on microcavities with two-dimensional materials

Research Project

Project/Area Number 22K14624
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 30020:Optical engineering and photon science-related
Research InstitutionNational Institute of Advanced Industrial Science and Technology (2023)
Institute of Physical and Chemical Research (2022)

Principal Investigator

Yamashita Daiki  国立研究開発法人産業技術総合研究所, エレクトロニクス・製造領域, 研究員 (40858099)

Project Period (FY) 2022-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2023: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2022: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Keywordsシリコンフォトニクス / 二次元材料 / 光スイッチ / フォトニック結晶 / 微小共振器
Outline of Research at the Start

近年,ますます増加していく情報通信量を背景に,より高速で省エネな次世代光通信技術の重要性が高まっている.本研究では,二次元層状半導体を屈折率変調材料に用いた微小光共振器による新しい光スイッチデバイスの研究に取り組む.微小光共振器上に積載した二次元層状半導体にレーザーを照射し,光吸収キャリアによる屈折率変調を起こして共振器の共振波長をシフトさせることでスイッチングを行う.大きな屈折率変調が可能な材料と,それを最大化する共振器構造を組み合わせることで,高速かつ省エネで動作する光スイッチデバイスを実証したい.

Outline of Final Research Achievements

This study aimed to create a high-speed and energy-efficient optical switch using two-dimensional layered semiconductors. We achieved this by utilizing refractive index modulation induced by photo-absorbed carriers when a laser is directed onto two-dimensional materials on a micro-optical resonator. Initially, we developed a device that could modulate the refractive index while maintaining the Q-factor of a silicon photonic crystal nanobeam optical resonator. Subsequently, we assessed the characteristics of the optical switch operation and examined the dynamics of photo-generated carriers. Using the two-dimensional material MoTe2, we successfully produced a device capable of achieving a high-speed switching time of 33ps and demonstrated energy efficiency, requiring only about 200~300fJ for switching energy. This research has the potential to contribute to the advancement of future communication technologies.

Academic Significance and Societal Importance of the Research Achievements

本研究の意義は、シリコンフォトニックデバイスに新しい機能性材料である二次元材料を集積し、ハイブリッドデバイスを開発することで、シリコンの材料限界を超えた高速・省エネ光スイッチングを実証したことです。具体的には、二次元層状半導体を屈折率変調材料として用いた微小共振器型光スイッチの研究を行い、大きな屈折率変調が可能な材料とそれを最大化する共振器構造を組み合わせることで、従来の同型の光スイッチデバイスを超える性能を実現しました。この研究により、将来の通信技術の発展に寄与することが期待されます。

Report

(3 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • Research Products

    (12 results)

All 2024 2023 2022 Other

All Journal Article (4 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (7 results) (of which Int'l Joint Research: 6 results) Remarks (1 results)

  • [Journal Article] Room-temperature quantum emission from interface excitons in mixed-dimensional heterostructures2024

    • Author(s)
      Fang N.、Chang Y. R.、Fujii S.、Yamashita D.、Maruyama M.、Gao Y.、Fong C. F.、Kozawa D.、Otsuka K.、Nagashio K.、Okada S.、Kato Y. K.
    • Journal Title

      Nature Communications

      Volume: 15 Issue: 1 Pages: 2871-2871

    • DOI

      10.1038/s41467-024-47099-6

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] van der Waals Decoration of Ultra-High-Q Silica Microcavities for χ(2)–χ(3) Hybrid Nonlinear Photonics2024

    • Author(s)
      Fujii Shun、Fang Nan、Yamashita Daiki、Kozawa Daichi、Fong Chee Fai、Kato Yuichiro K.
    • Journal Title

      Nano Letters

      Volume: 24 Issue: 14 Pages: 4209-4216

    • DOI

      10.1021/acs.nanolett.4c00273

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Resonant exciton transfer in mixed-dimensional heterostructures for overcoming dimensional restrictions in optical processes2023

    • Author(s)
      Fang N.、Chang Y. R.、Yamashita D.、Fujii S.、Maruyama M.、Gao Y.、Fong C. F.、Otsuka K.、Nagashio K.、Okada S.、Kato Y. K.
    • Journal Title

      Nature Communications

      Volume: 14 Issue: 1 Pages: 8152-8159

    • DOI

      10.1038/s41467-023-43928-2

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Quantization of Mode Shifts in Nanocavities Integrated with Atomically Thin Sheets2022

    • Author(s)
      Fang Nan、Yamashita Daiki、Fujii Shun、Otsuka Keigo、Taniguchi Takashi、Watanabe Kenji、Nagashio Kosuke、Kato Yuichiro K.
    • Journal Title

      Advanced Optical Materials

      Volume: 10 Issue: 19 Pages: 2200538-2200538

    • DOI

      10.1002/adom.202200538

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Second-order Nonlinear Optics in Ultrahigh-Q Silica Microcavities Decorated by Two-Dimensional Materials2024

    • Author(s)
      Shun Fujii, Nan Fang, Daiki Yamashita, Daichi Kozawa, Chee Fai Fong, Yuichiro K Kato
    • Organizer
      CLEO Pacific Rim 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] All-Optical Switching Based on Silicon Nanocavities Boosted by Two-Dimensional Semiconductors2024

    • Author(s)
      Daiki Yamashita, Nan Fang, Shun Fujii, Yuichiro K. Kato
    • Organizer
      CLEO 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Nanocavity induced by atomically thin transition metal dichalcogenide in photonic crystal waveguide2023

    • Author(s)
      C. F. Fong, D. Yamashita, N. Fang, S. Fujii, Y.-R. Chang, T. Taniguchi, K. Watanabe, Y. K. Kato
    • Organizer
      JSAP-Optica Joint Symposia 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hybrid silicon all-optical switching devices integrated with two-dimensional materials2023

    • Author(s)
      Daiki Yamashita, Nan Fang, Shun Fujii, Yuichiro K. Kato
    • Organizer
      JSAP-Optica Joint Symposia 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantization of mode shifts in nanocavities integrated with atomically thin sheets2022

    • Author(s)
      D. Yamashita, N. Fang, S. Fujii, K. Otsuka, T. Taniguchi, K. Watanabe, K. Nagashio, Y. K. Kato
    • Organizer
      JSAP-Optica Joint Symposia
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Formation of heterocavity by deposition of hexagonal boron nitride flake on photonic crystal waveguide2022

    • Author(s)
      C. F. Fong, D. Yamashita, N. Fang, T. Taniguchi, K. Watanabe Y. K. Kato
    • Organizer
      JSAP-Optica Joint Symposia
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Quantization of mode shifts in nanocavities integrated with atomically thin sheets2022

    • Author(s)
      N. Fang, D. Yamashita, S. Fujii, K. Otsuka, T. Taniguchi, K. Watanabe, K. Nagashio, Y. K. Kato
    • Organizer
      The 63rd Fullerenes-Nanotubes-Graphene General Symposium
    • Related Report
      2022 Research-status Report
  • [Remarks] Preprint

    • URL

      https://doi.org/10.48550/arXiv.2403.18199

    • Related Report
      2023 Annual Research Report

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Published: 2022-04-19   Modified: 2025-01-30  

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