• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study on Optical Signal Processing in Time-Frequency intermediate domain

Research Project

Project/Area Number 16H04365
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Communication/Network engineering
Research InstitutionOsaka University

Principal Investigator

KONISHI Tsuyoshi  大阪大学, 工学研究科, 准教授 (90283720)

Co-Investigator(Kenkyū-buntansha) 植之原 裕行  東京工業大学, 科学技術創成研究院, 教授 (20334526)
和田 尚也  国立研究開発法人情報通信研究機構, ネットワークシステム研究所, 研究所長 (20358873)
清水 智  国立研究開発法人情報通信研究機構, ネットワークシステム研究所フォトニックネットワークシステム研究室, 主任研究員 (10533440)
Research Collaborator CINCOTTI Gabriella  
NAGASHIMA Tomotaka  
NAGANUMA Tomohiro  
YAMASAKI Yu  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥16,770,000 (Direct Cost: ¥12,900,000、Indirect Cost: ¥3,870,000)
Fiscal Year 2018: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2017: ¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2016: ¥8,190,000 (Direct Cost: ¥6,300,000、Indirect Cost: ¥1,890,000)
Keywords光信号処理 / 多重化方式 / シリコンフォトニクス / 時間-周波数変換 / 時間―周波数領域 / 光パケット交換 / 光回線交換 / 時間-周波数領域 / 時間-周波数領域 / 光周波数分割多重 / 光時間分割多重
Outline of Final Research Achievements

To achieve a theoretical investigation regarding optical signal processing in time-frequency intermediate domain, we examine an appropriate time-frequency intermediate domain which can accommodate both a packet switching signal and a path switching signal by using a signal quality as an index for optimization. As a result, when a fractional parameter is -0.9, we successfully confirm that it is possible to get much better signal quality in time-frequency intermediate domain with keeping the same occupied bandwidth as that in frequency domain.
In addition, we examine the usefulness of silicon photonics technology to realize the devise in an intermediate domain, which requires an appropriate dispersion characteristic. A numerical analysis and a foundry experimental production device (8 channels) show the dispersion characteristic beyond 800ps/nm, which is sufficient for devises in an intermediate domain. The outcomes of these researches was presented as an invited paper in OFC2019.

Academic Significance and Societal Importance of the Research Achievements

本研究成果の学術的意義や社会的意義について、それぞれ次の点があげられる。学術的意義は、これまで十分に検討がなされていない未踏の領域である中間領域に踏み込んだ点、社会的意義は、現在のネットワークが直面している信号品質と容量のトレードオフの課題に対する理論およびデバイス技術において有効な知見を抽出した点である。代表者らの提案してきた非整数次(フラクショナル)フーリエ変換を用いたアプローチは最適化さえ可能となれば,消費電力も低く現在の多重化技術の補完的な役割が期待できる.一連の成果の学術的意義や社会的意義が認められ,国際会議(OFC2019)において招待講演を行った.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (15 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (3 results) Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results,  Acknowledgement Compliant: 1 results) Presentation (10 results) (of which Int'l Joint Research: 5 results,  Invited: 2 results)

  • [Int'l Joint Research] Roma Tre University(イタリア)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] Rome Tre University(イタリア)

    • Related Report
      2017 Annual Research Report
  • [Int'l Joint Research] Rome University Tre(イタリア)

    • Related Report
      2016 Annual Research Report
  • [Journal Article] Experimental demonstration of cyclic prefix insertion for all-optical fractional OFDM2017

    • Author(s)
      T. Nagashima, G. Cincotti, T. Murakawa, S. Shimizu, M. Hasegawa, K. Hattori, M. Okuno, S. Mino, A. Himeno, N. Wada, H. Uenohara, and T. Konishi
    • Journal Title

      Optics Communications

      Volume: 396 Pages: 185-190

    • DOI

      10.1016/j.optcom.2017.03.032

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Super spectral resolution beyond pixel Nyquist limits on multi-channel spectrometer2016

    • Author(s)
      Tsuyoshi Konishi, Yu Yamasaki, and Tomotaka Nagashima
    • Journal Title

      Optics Express

      Volume: 24 Issue: 23 Pages: 26583-26598

    • DOI

      10.1364/oe.24.026583

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Enhanced Optical Communications through Joint Time-frequency Multiplexing Strategies2019

    • Author(s)
      T. Konishi, T. Murakawa, T. Nagashima, S. Shimizu, M. Hasegawa, K. Hattori, M. Okuno, S. Mino, A. Himeno, N. Wada, H. Uenohara , T. Kodama, G. Cincotti
    • Organizer
      OFC2019
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光フラクショナルOFDM方式における周波数利用効率の検討2019

    • Author(s)
      山崎佑, 永島知貴, Gabriella Cincotti, 清水智, 和田尚也, 植之原裕之, 小西 毅
    • Organizer
      電子情報通信学会フォトニックネットワーク研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Analytical Investigation of Generic Form Expressing Adaptive Dispersion of Optical Fractional Fourier Transform Circuit2018

    • Author(s)
      T. Naganuma, and H. Uenohara
    • Organizer
      2018 Opto-Electronics and Communications Conference (OECC2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Inter-symbol interference suppression for a hybrid use of OFDM and N-OTDM based on Fr-OFDM2018

    • Author(s)
      T. Konishi, Y. Yamasaki, S. Shimizu, G. Cincotti, N. Wada, H. Uenohara
    • Organizer
      2018 Photonics in Switching and Computing(PSC2018)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 光フラクショナルOFDM回路の位相シフトによる分散制御特性の解析的検討2017

    • Author(s)
      永沼友浩,植之原裕行
    • Organizer
      2017年電子情報通信学会総合大会
    • Place of Presentation
      名城大学、愛知県
    • Year and Date
      2017-03-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] Investigation of fractional OFDM-based serial-to-parallel conversion for phase modulated Nyquist OTDM signals2017

    • Author(s)
      Y. Yamasaki, T. Nagashima, M. Hiraoka, and T. Konishi
    • Organizer
      4th Extremely Advanced Transmission Technologies (EXAT2017)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ナイキストパルスと線形な手法による時間レンズを用いた光シリアル-パラレル変換2017

    • Author(s)
      小西 毅,山崎 佑,平岡 幹基,永島 知貴
    • Organizer
      電子情報通信学会超高速光エレクトロニクス研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] フラクショナルフーリエ変換を用いたナイキストOTDM信号のシリアル-パラレル変換における信号品質向上の検討2017

    • Author(s)
      小西毅,山崎佑,平岡幹基
    • Organizer
      電子情報通信学会OCS研究会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 光フラクショナルOFDM回路の位相シフトによる分散制御特性の解析的検討2017

    • Author(s)
      永沼友浩,植之原裕行
    • Organizer
      電子情報通信学会総合大会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Moire effect-based spectral resolution enhancement for fine WDM-based optical signal processing and measurement2016

    • Author(s)
      Tsuyoshi Konishi
    • Organizer
      18th International Conference on Transparent Optical Networks ICTON 2016
    • Place of Presentation
      Trento, Italy
    • Year and Date
      2016-07-10
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited

URL: 

Published: 2016-04-21   Modified: 2020-03-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi