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スローライトブラッグ反射鏡導波路による高解像光ビーム掃引とその光信号処理への応用

Research Project

Project/Area Number 13J03062
Research Category

Grant-in-Aid for JSPS Fellows

Allocation TypeSingle-year Grants
Section国内
Research Field Applied optics/Quantum optical engineering
Research InstitutionTokyo Institute of Technology

Principal Investigator

顧 暁冬  東京工業大学, 精密工学研究所, 特別研究員(PD)

Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥3,960,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2014: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2013: ¥1,200,000 (Direct Cost: ¥1,200,000)
Keywords分波器 / 波長選択スイッチ / ビーム掃引 / ブラッグ反射鏡導波路
Outline of Annual Research Achievements

本研究では、光の群速度を遅くするスローライト導波路の巨大な構造分散を活用することで、新たな非機械式光ビーム掃引技術の確立及びこの技術に基づく機能デバイスの提案・開発することである。本技術は、従来のビーム掃引技術の限界を打破し、非機械式で、小型、高解像度、高速のビーム掃引を可能とする期待ができる。
平成26年度までには、上記の高性能ビーム掃引技術をベースに高性能波長選択スイッチを設計、作製した。従来の技術より大幅に超える200出力ポートを搭載可能な波長選択スイッチの作製に成功した。しかしながらこの回折光学素子においては、空間に出力される光信号の強度が、光導波路の伝播方向に向かって指数関数的に減少するという問題がある。このような指数関数状の強度分布は、リニアアレイとしてのビームパターンを変形させるから、回折光学素子としての波長分解能を劣化させる。
平成27年度には、上記の問題を解決するため、光信号の伝搬方向に向かって光信号の上方空間への透過率が変化する反射構造部の提案および設計を行った。その方法とは、基板上に下部ブラッグ反射鏡、コア層を形成後、上部ブラッグ反射鏡に必要となる最大の均一の層数またはペア数で成膜し、そしてフォトリソグラフィおよびエッチングにより、所望の透過率分布を有する上部ブラッグ反射鏡を形成する。
ほかに、この研究で提案した波長選択スイッチの高い挿入損失を改善するため、電流注入により無挿入損失波長選択スイッチの提案および実証実験を行った。結果として、15dB以上の光増幅が得られ、およそ13dBの挿入損失を完全に補うことに成功した。その同時に、放射された光の強度分布も平坦となり、分解能の高い光信号も得られた。
本研究によれば、従来の回折光学素子では得られなかった、無挿入損失、そして非常に高い分散を保ちつつ、波長分解能に優れた回折光学素子の実現が可能になる。

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(3 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • 2013 Annual Research Report
  • Research Products

    (33 results)

All 2016 2015 2014 2013 Other

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Acknowledgement Compliant: 3 results,  Open Access: 1 results) Presentation (25 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] Compact Wavelength Selective Switch Using a Bragg Reflector Waveguide Array with Ultra-Large Number (>100) of Output-Ports2015

    • Author(s)
      Xiaodong Gu,Kenya Suzuki,Yuichiro Ikuma,Kazunori Seno,Hiromasa Tanobe,Akihiro Matsutani,Fumio Koyama
    • Journal Title

      Journal of Lightwave Technology

      Volume: vol. 33, no. 7 Issue: 7 Pages: 1358-1364

    • DOI

      10.1109/jlt.2014.2386324

    • Related Report
      2015 Annual Research Report 2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] 850nm transverse-coupled-cavity vertical-cavity surface-emitting laser with direct modulation bandwidth of over 30GHz2015

    • Author(s)
      Xiaodong Gu, Masanori Nakahama, Akihiro Matsutani, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama
    • Journal Title

      Applied Physics Express

      Volume: 8 Issue: 8 Pages: 082702-082702

    • DOI

      10.7567/apex.8.082702

    • NAID

      210000137613

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] 20 μm-long Slow-light Bragg Reflector Waveguide Modulator with over 20GHz Modulation Bandwidth2014

    • Author(s)
      Xiaodong Gu (顧 暁冬), Ayako Suzuki, Akihiro Matsutani, Fumio Koyama
    • Journal Title

      Applied Physics Express

      Volume: 7 Issue: 11 Pages: 114101-114101

    • DOI

      10.7567/apex.7.114101

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Beam-steering in hollow ZrO2/SiO2 distributed Bragg reflector waveguides for one-dimensional RGB imaging2014

    • Author(s)
      Xiaodong Gu, Masanori Nakahama, Moustafa Ahmed, Ahmed Bakry, Fumio Koyama
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 53 Issue: 3 Pages: 030302-030302

    • DOI

      10.7567/jjap.53.030302

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 35-μm Bragg Reflector Waveguide Modulator for High-Speed and Energy -Saving Operation2013

    • Author(s)
      Xiaodong Gu, Toshikazu Shimada, Akihiro Matsutani, Furnio Koyama
    • Journal Title

      IEEE Photonics Technology Letters

      Volume: 25 Issue: 18 Pages: 1766-1769

    • DOI

      10.1109/lpt.2013.2275190

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Low polarization dependent beam deflector based on Bragg reflector waveguide for C-band wavelength demultiplexing2013

    • Author(s)
      Xiaodong Gu, Akihiro Matsutani, Fumio Koyama
    • Journal Title

      Journal of Applied Physics

      Volume: 114 Issue: 16

    • DOI

      10.1063/1.4828715

    • Related Report
      2013 Annual Research Report
    • Peer Reviewed
  • [Presentation] Optical Wavelength Demultiplexer with 15~20dB Gain Based on an Active-type Bragg Reflector Waveguide Deflector2016

    • Author(s)
      Xiaodong Gu
    • Organizer
      2016年電子情報通信学会総合大会
    • Place of Presentation
      九州大学
    • Year and Date
      2016-03-15
    • Related Report
      2015 Annual Research Report
  • [Presentation] Over 30 GHz Modulation of 850 nm Transverse Coupled Cavity Vertical-Cavity Surface-Emitting Laser2015

    • Author(s)
      Xiaodong Gu
    • Organizer
      European Conference on Optical Communication
    • Place of Presentation
      バレンシアコンベンションセンター(スペイン)
    • Year and Date
      2015-09-29
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] First Demonstration of 850 nm Transverse Coupled Cavity Vertical Cavity Surface-Emitting Laser2015

    • Author(s)
      Xiaodong Gu
    • Organizer
      応用物理学会2015年秋季学術講演会
    • Place of Presentation
      名古屋国際会議場
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 60-channel Wavelength Selective Switch on Bragg Reflector Waveguides Array with 182 Output-ports2015

    • Author(s)
      Xiaodong Gu
    • Organizer
      International Nano-Optoelectronics Workshop
    • Place of Presentation
      東京工業大学
    • Year and Date
      2015-08-06
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Ultra-large port-count wavelength selective switch based on a Bragg reflector waveguides array2015

    • Author(s)
      顧 暁冬
    • Organizer
      レーザー学会学術講演会第 35 回年次大会
    • Place of Presentation
      東海大学(東京都港区高輪)
    • Year and Date
      2015-01-12
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] Miniature Slow-Light Bragg Reflector Waveguide Modulator with over 20GHz Modulation Bandwidth2014

    • Author(s)
      顧 暁冬
    • Organizer
      LQE/OCS/OPE共催 電子情報通信学会研究会
    • Place of Presentation
      長崎歴史文化博物館(長崎県長崎市立山)
    • Year and Date
      2014-10-31
    • Related Report
      2014 Annual Research Report
  • [Presentation] Large Point-Count Wavelength Selective Switch Based on a Bragg Reflector Waveguides Array2014

    • Author(s)
      顧 暁冬
    • Organizer
      LQE/OCS/OPE共催 電子情報通信学会研究会
    • Place of Presentation
      長崎歴史文化博物館(長崎県長崎市立山)
    • Year and Date
      2014-10-31
    • Related Report
      2014 Annual Research Report
  • [Presentation] Improvement in Crosstalk of 200-Port Bragg Reflector Waveguides Array-based Wavelength Selective Switch2014

    • Author(s)
      Xiaodong Gu (顧 暁冬)
    • Organizer
      IEEE Photonics Conference 2014
    • Place of Presentation
      アメリカ・サンディエゴ (Hyatt Regency La Jolla)
    • Year and Date
      2014-10-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] 60-channel Wavelength Selective Switch on Bragg Reflector Waveguides Array with 125 Output-ports2014

    • Author(s)
      Xiaodong Gu (顧 暁冬)
    • Organizer
      European Conference on Optical Communications 2014
    • Place of Presentation
      フランス・カンヌ (Palais des Festivals et des Congres)
    • Year and Date
      2014-09-24
    • Related Report
      2014 Annual Research Report
  • [Presentation] 60-Channels Flexible-Grid Wavelength Selective Switch Based on a Compact Bragg Reflector Waveguides Array2014

    • Author(s)
      顧 暁冬
    • Organizer
      第75回応用物理学会秋季学術講演会
    • Place of Presentation
      北海道大学(北海道札幌市北区)
    • Year and Date
      2014-09-19
    • Related Report
      2014 Annual Research Report
  • [Presentation] Large Enhancement in Modulation Bandwidth of Low-Voltage Slow Light Bragg Reflector Waveguide Modulator2014

    • Author(s)
      Xiaodong Gu (顧 暁冬)
    • Organizer
      The OptoElectronics and Communication Conference 2014
    • Place of Presentation
      オーストラリア・メルボルン (Melbourne Convention and Exhibition Centre)
    • Year and Date
      2014-07-08
    • Related Report
      2014 Annual Research Report
  • [Presentation] Bragg Reflector Waveguide Modulator toward High-Speed Operations and Low Power Consumption2014

    • Author(s)
      顧 暁冬
    • Organizer
      第61回応用物理学会春季学術講演会
    • Place of Presentation
      青山学院大学相模原キャンパス(神奈川相模原市中央区)
    • Year and Date
      2014-03-20
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Large Port-Count Wavelength Selective Switch Based on High-density Bragg Reflector Waveguide Array2014

    • Author(s)
      顧 暁冬
    • Organizer
      第61回応用物理学会春季学術講演会
    • Place of Presentation
      青山学院大学相模原キャンパス(神奈川県相模原市中央区)
    • Year and Date
      2014-03-17
    • Related Report
      2013 Annual Research Report
  • [Presentation] Compact Wavelength Selective Switch Based on High-density Bragg Reflector Waveguide Array with 120 Output Ports2014

    • Author(s)
      顧 暁冬
    • Organizer
      Optical Fiber Communication Conference 2014
    • Place of Presentation
      Moscone Center, San Franscisco(アメリカ)
    • Year and Date
      2014-03-13
    • Related Report
      2013 Annual Research Report
  • [Presentation] Output beam profile control of slow-light Bragg reflector waveguide deflector with high-contrast sub-wavelength grating2014

    • Author(s)
      顧 暁冬
    • Organizer
      SPIE Photonics West 2014
    • Place of Presentation
      Moscone Center, San Franscisco(アメリカ)
    • Year and Date
      2014-02-06
    • Related Report
      2013 Annual Research Report
  • [Presentation] Beam-steering in Hollow Distributed Bragg Reflector Waveguides for RGB Imaging2013

    • Author(s)
      顧 暁冬
    • Organizer
      The 20th international display workshops
    • Place of Presentation
      札幌コンベンションセンター(北海道札幌市白石区)
    • Year and Date
      2013-12-04
    • Related Report
      2013 Annual Research Report
  • [Presentation] Wavelength selective switch with high angular dispersion element based on Bragg reflector waveguide2013

    • Author(s)
      顧 暁冬
    • Organizer
      18th Microoptics Conference
    • Place of Presentation
      東京工業大学蔵前会館(東京都目黒区)
    • Year and Date
      2013-10-29
    • Related Report
      2013 Annual Research Report
  • [Presentation] High-speed and low-voltage operation of compact Bragg reflector waveguide modulator2013

    • Author(s)
      顧 暁冬
    • Organizer
      18th Microoptics Conference
    • Place of Presentation
      東京工業大学蔵前会館(東京都目黒区)
    • Year and Date
      2013-10-28
    • Related Report
      2013 Annual Research Report
  • [Presentation] Ultra-compact Bragg Reflector Waveguide Modulator with Large Response Bandwidth and Low Power Consumption2013

    • Author(s)
      顧 暁冬
    • Organizer
      第74回応用物理学会秋季学術講演会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2013-09-19
    • Related Report
      2013 Annual Research Report
  • [Presentation] 1550nm-band Low Polarization Dependenee Wavelength Demultiple Xing Using Bragg Reflector Waveguide2013

    • Author(s)
      顧 暁冬
    • Organizer
      第74回応用物理学会秋季学術講演会
    • Place of Presentation
      同志社大学京田辺キャンパス(京都府京田辺市)
    • Year and Date
      2013-09-19
    • Related Report
      2013 Annual Research Report
  • [Presentation] Super-high Resolution Beam Steering Using Bragg Reflector Waveguides2013

    • Author(s)
      顧 暁冬
    • Organizer
      2013 International Nano-Optoelectronics Workshop
    • Place of Presentation
      Institut d'Etudes Scientifiques de Cargése(フランス)
    • Year and Date
      2013-08-26
    • Related Report
      2013 Annual Research Report
  • [Presentation] 高精細イメージングのためのBragg反射鏡導波路を用いた偏向デバイス2013

    • Author(s)
      顧 暁冬
    • Organizer
      第12回レーザディスプレイ技術研究会
    • Place of Presentation
      東京大学生産技術研究所コンベンションホール(東京都目黒区)
    • Year and Date
      2013-07-10
    • Related Report
      2013 Annual Research Report
    • Invited
  • [Presentation] Sub-1V and Sub-100μm Electro-absorption Modulator Based on Bragg Reflector Wave guide2013

    • Author(s)
      顧 暁冬
    • Organizer
      2013 Conference on Lasers and Electro-Optics Pacific Rim
    • Place of Presentation
      国立京都国際会館(京都府京都市左京区)
    • Year and Date
      2013-07-03
    • Related Report
      2013 Annual Research Report
  • [Presentation] ブラッグ反射鏡導波路を用いた高解像度ビーム掃引デバイス2013

    • Author(s)
      顧 暁冬
    • Organizer
      レーザ・量子エレクトロニクス研究会(LQE)
    • Place of Presentation
      機械振興会館(東京都港区)
    • Year and Date
      2013-06-21
    • Related Report
      2013 Annual Research Report
  • [Presentation] Miniature Bragg Reflector Waveguide Beam Deflector for Full C-band W avelength Demultiplexing with Low Polarization Dependence and High Resolution2013

    • Author(s)
      顧 暁冬
    • Organizer
      Conference on Lasers and Electro-Optics 2013
    • Place of Presentation
      San Jose Convention Center.SanJ ose(アメリカ)
    • Year and Date
      2013-06-13
    • Related Report
      2013 Annual Research Report
  • [Remarks] 東京工業大学リサーチリポジトリ

    • URL

      http://t2r2.star.titech.ac.jp/cgi-bin/researcherpublicationlist.cgi?q_researcher_content_number=0dd433493a78b85aab67c6d0b0b71369&q_year_from=2015&q_year_to=2015&tab_yf=2016

    • Related Report
      2015 Annual Research Report
  • [Remarks]

    • URL

      http://t2r2.star.titech.ac.jp/cgi-bin/researcherpublicationlist.cgi?q_researcher_conten_tnumber=CTT100613225

    • Related Report
      2013 Annual Research Report

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Published: 2014-01-29   Modified: 2024-03-26  

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