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High speed graphene based optical modulators and photodetectors on silicon waveguides

Research Project

Project/Area Number 17J09162
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Electron device/Electronic equipment
Research InstitutionThe University of Tokyo

Principal Investigator

Kovacevic Goran  東京大学, 工学系研究科, 特別研究員(DC2)

Project Period (FY) 2017-04-26 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2018: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 2017: ¥900,000 (Direct Cost: ¥900,000)
KeywordsSilicon Photonics / Graphene / Optical Modulator / Pulsed Fiber Laser / Waveguides / Mode-locking / Si photonics / Optical Modulation / Fiber Lasers
Outline of Annual Research Achievements

I successfully designed an ultra-fast graphene optical modulator on Si waveguide, supplemented with rigorous numerical simulations and RC circuit characterization. This design culminated in an accepted paper in the APEX journal of the Japanese Society for Applied Physics, Impact Factor, 2.667, with Acknowledgment to JSPS. In addition to this, I utilized the previously obtained fabrication skills to fabricate an integrated passive saturable absorber with graphene on silicon waveguides. I used the e-beam litography and wet etch process to develop waveguides. Graphene was transfered in the wet transfer processed using a PMMA coating, and patterned in e-beam litography. For the first time I showed different behaviour of the mode locked pulse in different lengths of graphene in a Si photonic chip. This was a stepping stone in fabricating the proposed/designed ultra high speed graphene modulator as I was able to succesfully fabricate waveguides, transfer and pattern graphene. This research was published in the Japanese Journal of Applied Physics, with an acknowledgment to JSPS. The fabrication of the full modulator is left for the future research which will be taken over by my peers. In addition to 2 journal publication, my research was presented at 4 conferences, with references to JSPS.

Research Progress Status

平成30年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

平成30年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (8 results)

All 2018 2017

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

  • [Journal Article] Ultra-high-speed graphene optical modulator design based on tight field confinement in a slot waveguide2018

    • Author(s)
      Kovacevic Goran、Phare Christopher、Set Sze Y.、Lipson Michal、Yamashita Shinji
    • Journal Title

      Applied Physics Express

      Volume: 11 Issue: 6 Pages: 065102-065102

    • DOI

      10.7567/apex.11.065102

    • NAID

      210000136254

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Patterned graphene on SiN waveguides for mode locking of fiber lasers2018

    • Author(s)
      Kovacevic Goran、Shirahata Takuma、Wu Bingchang、Yuan Pengtao、Xiao Ting-Hui、Jin Lei、Inoue Taiki、Maruyama Shigeo、Cheng Zhenzhou、Set Sze Y.、Yamashita Shinji
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 57 Issue: 10 Pages: 102701-102701

    • DOI

      10.7567/jjap.57.102701

    • NAID

      210000149712

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ultra high-speed graphene optical modulator design based on tight field confinement in a slot waveguide2018

    • Author(s)
      Goran Kovacevic, Christopher Phare, Sze Set, Michal Lipson, Shinji Yamashita
    • Journal Title

      Applied Physics Express (APEX)

      Volume: 印刷中

    • NAID

      210000136254

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Patterned Graphene on SiN Waveguides with NPR for Fiber Laser Mode-Locking2018

    • Author(s)
      Goran Kovacevic, Takuma Shirahata, Bingchang Wu, Ting-Hui Xiao, Lei Jin, Taiki Inoue, Shigeo Maruyama, Zhenzhou Cheng, Sze Y. Set, and Shinji Yamashita
    • Organizer
      Frontiers in Optics 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Influence of Intra-Cavity Loss on Mode-Locking of Fiber Lasers2018

    • Author(s)
      Goran Kovacevic, Takuma Shirahata, Pengtao Yuan, Sze Yun Set, and Shinji Yamashita
    • Organizer
      Conference on Lasers and Electro-Optics/Pacific Rim 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Mode locking of fiber lasers using patterned graphene on SiN waveguides2018

    • Author(s)
      Goran Kovacevic、Takuma Shirahata、Bingchang Wu、Pengtao Yuan、Ting-Hui Xiao、Lei Jin、Taiki Inoue、Shigeo Maruyama、Zhen Zhou Cheng、Sze Set、Shinji Yamashita
    • Organizer
      Proceedings in JSAP autumn meeting, Nagoya, Japan
    • Related Report
      2018 Annual Research Report
  • [Presentation] Study of High Loss Fiber Laser Cavities Mode-Locked by NPR2018

    • Author(s)
      Goran Kovacevic、Pengtao Yuan、Sze Set、Shinji Yamashita
    • Organizer
      JSAP Spring Meeting
    • Related Report
      2018 Annual Research Report
  • [Presentation] Design of a High-Speed Graphene Optical Modulator on a Silicon Slot Waveguide2017

    • Author(s)
      Goran Kovacevic, Christopher Phare, Sze Yun Set, Michal Lipson, Shinji Yamashita
    • Organizer
      22nd Microoptics Conference (MOC2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research

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Published: 2017-05-25   Modified: 2024-03-26  

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