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Developments of ultra-high-speed VCSELs using coupled cavities

Research Project

Project/Area Number 21H04554
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Review Section Medium-sized Section 21:Electrical and electronic engineering and related fields
Research InstitutionTokyo Institute of Technology

Principal Investigator

Koyama Fumio  東京工業大学, 科学技術創成研究院, 特任教授 (30178397)

Project Period (FY) 2021-04-05 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥42,120,000 (Direct Cost: ¥32,400,000、Indirect Cost: ¥9,720,000)
Fiscal Year 2023: ¥12,350,000 (Direct Cost: ¥9,500,000、Indirect Cost: ¥2,850,000)
Fiscal Year 2022: ¥14,430,000 (Direct Cost: ¥11,100,000、Indirect Cost: ¥3,330,000)
Fiscal Year 2021: ¥15,340,000 (Direct Cost: ¥11,800,000、Indirect Cost: ¥3,540,000)
Keywords半導体レーザ / データセンタ / 光インターコネクト / 光通信 / 面発光レーザ / 高速変調 / 直接変調 / データセンター / 光インタコネクト
Outline of Research at the Start

本研究では,データセンターやスーパコンピュータ内の光インターコネクトの主要光源である面発光レーザに,新規結合共振器構造を導入して,その変調帯域を大幅に拡大する超高速変調技術を確立する.理論的な変調速度限界を究明するとともに,デバイスの試作を通しての実証研究により,既存技術の4倍以上の200Gbps級の超高速動作と,1/5以下の低消費電力動作を両立する半導体レーザ工学の確立を目指す.さらに,波長チャーピングの制御により,単一モード光ファイバ伝送のリンク距離を1km以上まで延伸し,ハイパースケールデータセンターネットワークや次次世代移動体通信ネットワークへの適用可能性を実証する.

Outline of Final Research Achievements

We have established an ultra-high-speed modulation platform that significantly expands the modulation bandwidth by integrating a miniature resonator laterally on a surface-emitting laser, which is the main light source for optical interconnects in data centers, and using the optical feedback effect. Since the micro-cavity VCSEL does not require an increase in the driving current needed for conventional high-speed operation, low power consumption has also been achieved. In addition to clarifying the theoretical modulation speed limit, we have achieved a modulation bandwidth of 50 GHz, more than twice that of existing technology, ultra-high-speed operation of 160 Gbps, and low power consumption operation of less than 1/5. Furthermore, by extending the emission wavelength to the 1.1 μm band, we have extended the link distance of single-mode optical fiber transmission to more than 2 km, demonstrating the applicability of this technology to hyper-scale data center networks.

Academic Significance and Societal Importance of the Research Achievements

機器間の光リンクの高密度実装、低消費電力化のために,次世代超小型光トランシーバの開発競争が世界中で活発に繰り広げられているが,大容量化,スケーラビリティ,小型実装,低消費電力化への要求を満たす解が見出されていない.近い将来100Gbps超の高速化のニーズは大きいものの,現状技術は25Gbpsの伝送速度に留まっていた.生成AIの進展により,データセンタ内のリンク速度の拡充と消費電力の低減は喫緊の課題である.本研究により,低消費電力化と高速化を両立させる面発光レーザからなる超高速光リンク技術を開発する学術的・産業上の意義は極めて大きい.

Report

(5 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Comments on the Screening Results   Annual Research Report
  • Research Products

    (26 results)

All 2024 2023 2022 2021

All Presentation (26 results) (of which Int'l Joint Research: 17 results,  Invited: 21 results)

  • [Presentation] 面発光レーザの進展 -3Dセンサ・データセンター光インタコネクションへ ー2024

    • Author(s)
      小山二三夫
    • Organizer
      レーザー学会学術講演会 第44回年次大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] High-Speed VCSEL Photonics for Datacenter Networks2024

    • Author(s)
      B. Padullaparthi, F. Koyama
    • Organizer
      電子情報通信学会総合大会2024
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 1060nm帯単一モード結合共振器面発光レーザの高速化2024

    • Author(s)
      小山二三夫
    • Organizer
      電子情報通信学会総合大会2024
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] High Bandwidth (>35GHz) 1060nm Single-mode Transverse Coupled-cavity VCSEL Array for Standard Single-mode Fiber Transmission2024

    • Author(s)
      H. R. Ibrahim, C. Ge, X. Gu, B.Padullaparthi, and F. Koyama
    • Organizer
      Optical Fiber Communication Conference 2024
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 面発光レーザフォトニクスの進展2024

    • Author(s)
      小山二三夫
    • Organizer
      電子情報通信学会LQE30周年記念特別研究会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 1060nm Single-mode Intra-cavity Metal-aperture VCSEL for over 2km Standard 1300nm SMF Transmission2023

    • Author(s)
      C. Ge, L. Dong, X. Gu and F. Koyama
    • Organizer
      Conference on Lasers and Electro-Optics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Uncooled Operations of 100Gbps 1060nm Single-mode Metal-aperture VCSEL for Standard SMF Transmission2023

    • Author(s)
      C. Ge, L. Dong, X. Gu and F. Koyama
    • Organizer
      49th European Conference on Optical Communications
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] VCSEL Photonics for High-speed Interconnects and 3D Sensing2023

    • Author(s)
      Fumio Koyama
    • Organizer
      The OptoElectronics and Communications Conference 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL photonics for communications and 3D sensing2023

    • Author(s)
      Fumio Koyama
    • Organizer
      The International Nano-Optoelectronics Workshop 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-Speed VCSEL Photonics for Data Center Networks2023

    • Author(s)
      Fumio Koyama
    • Organizer
      The 2nd International Conference and Expo on Lasers, Optics & Photonics
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics for Optical interconnects and 3D Sensing2023

    • Author(s)
      Fumio Koyama
    • Organizer
      Asian VCSEL DAY 2023
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 1060nm Single-mode Intra-cavity Metal-aperture VCSEL for over 2km Standard 1300nm SMF Transmission2023

    • Author(s)
      Chang Ge、Xiaodong Gu、Fumio Koyama
    • Organizer
      第70回応用物理学会春期講演会
    • Related Report
      2022 Annual Research Report
  • [Presentation] High-speed VCSEL photonics for datacenter networks2022

    • Author(s)
      Fumio Koyama
    • Organizer
      SPIE Photonics Europe
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-speed VCSEL photonics for datacenter networks2022

    • Author(s)
      Fumio Koyama
    • Organizer
      20th International Conference Laser Optics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] High-speed VCSEL Photonics for Datacenter Networks2022

    • Author(s)
      Fumio Koyama
    • Organizer
      2022 URSI-Japan Radio Science Meeting
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 高速変調面発光レーザの最近の進展2022

    • Author(s)
      小山二三夫
    • Organizer
      2022年度光ネットワーク産業・技術研究会第 2 回公開討論会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 1060nm帯結合共振器面発光レーザのモード制御と高速化2022

    • Author(s)
      小山二三夫
    • Organizer
      電子情報通信学会レーザ・量子エレクトロニクス研究会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Advances of VCSEL Photonics2022

    • Author(s)
      Fumio Koyama
    • Organizer
      第3回サイエンスサロン
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] VCSEL Photonics for CPO Transceivers and LIDAR Applications2022

    • Author(s)
      Fumio Koyama
    • Organizer
      Asia Communications and Photonics Conference 2022
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics for Interconnects and 3D Sensing2022

    • Author(s)
      Fumio Koyama
    • Organizer
      International Conference and Expo on Lasers, Optics & Photonics
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics for CPO Transceivers Toward Beyond 5G Networks2022

    • Author(s)
      Fumio Koyama
    • Organizer
      The 12th International Symposium on Photonics and Electronics Convergence
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics for Communications and 3D Sensing2021

    • Author(s)
      F. Koyama
    • Organizer
      IEEE Electron Device Society Webinar
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Record Low Power Consumption 1060nm Single-mode Intracavity Metal Aperture VCSEL with Transverse Resonance2021

    • Author(s)
      H. Ibrahim, A. Hassan, X. Gu, S. Shinada, M. Ahmed F. Koyama
    • Organizer
      第82回応用物理学会秋期学術講演会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Recent progress of VCSEL Photonics and their applications2021

    • Author(s)
      F. Koyama
    • Organizer
      The 47th European Conference on Optical Communications
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics: Current State of the Art and Future Prospects2021

    • Author(s)
      F. Koyama
    • Organizer
      27th IEEE International Semiconductor Laser Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] VCSEL Photonics for High-speed Optical Interconnects and 3D Sensing2021

    • Author(s)
      F. Koyama
    • Organizer
      The 6th Laser and Optoelectronics Conference
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited

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Published: 2021-04-28   Modified: 2025-01-30  

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