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Study on signal beam modulation/demodulation method in holographic memory using spatial quadrature amplitude modulation

Research Project

Project/Area Number 17K06406
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionFukuoka University

Principal Investigator

Bunsen Masatoshi  福岡大学, 工学部, 教授 (50412573)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywordsホログラフィックデータストレージ / 空間直交振幅変調 / 強度輸送方程式法 / ホログラフィックメモリ / 強度輸送方程式 / 光メモリ
Outline of Final Research Achievements

To increase the capacity and transfer rate of holographic data storage, we investigated the spatial quadrature amplitude modulation in which phase modulation is further applied to signal beam in addition to the intensity modulation. Aiming to establish a method to detect the spatial quadrature amplitude modulated signal beam using a simpler and smaller mechanism / device, the transport of intensity equation (TIE) method was employed as a measurement method for the complex amplitude of the signal beam. We have newly proposed a phase modulation method for improving the signal beam detection accuracy and a noise removal method where the noise is typically superimposed on the detection phase by the TIE method. We also demonstrated their usefulness by experiments. Furthermore, we investigated a method to realize the TIE method, which conventionally required multiple imaging, with a single imaging.

Academic Significance and Societal Importance of the Research Achievements

研究開始時点において、記録容量・転送レート向上を目的とした空間直交振幅変調の重要性は認識され始め様々な研究機関において研究が開始されていたが、その実現において重要な要素技術である信号光の非干渉検出や単一撮像による検出に関する重要性はまだ十分には認識されていなかった。本研究課題において、特に強度輸送方程式法を利用した空間直交振幅変調信号光の非干渉計測技術の高精度化に成功したことには学術的に重要な意義がある。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (12 results)

All 2021 2020 2019 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 4 results,  Invited: 3 results)

  • [Journal Article] Detection method for the complex amplitude of a signal beam with intensity and phase modulation using the transport of intensity equation for holographic data storage2019

    • Author(s)
      Masatoshi Bunsen, Shosei Tateyama
    • Journal Title

      Optics Express

      Volume: 27 Issue: 17 Pages: 24029-24042

    • DOI

      10.1364/oe.27.024029

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 偏光依存光路長制御を用いたシングルショット強度輸送方程式法による空間直行振幅変調信号光検出2021

    • Author(s)
      田代和也、文仙正俊
    • Organizer
      2021年第68回応用物理学会春季学術講演会
    • Related Report
      2020 Annual Research Report
  • [Presentation] 空間直交振幅変調を用いたホログラフィックメモリ2020

    • Author(s)
      文仙正俊
    • Organizer
      レーザー学会学術講演会第40回年次大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 強度輸送方程式法による空間直交振幅変調信号光のシングルショット検出に向けた基礎実験2020

    • Author(s)
      角田総一朗、文仙正俊
    • Organizer
      映像情報メディア学会マルチメディアストレージ研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 偏光子アレイ付きカメラを用いた空間直交振幅変調信号光の非干渉シングルショット検出の検討2019

    • Author(s)
      角田総一朗、文仙正俊
    • Organizer
      2019年第80回応用物理学会秋季学術講演会
    • Related Report
      2019 Research-status Report
  • [Presentation] Numerical investigation on non-interferometric single-shot detection of SQAM signal beam with pixelated polarization camera2019

    • Author(s)
      Soichiro Sumida, Masatoshi Bunsen
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2019 (ISOM'19)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 文仙正俊,立山翔生2019

    • Author(s)
      ホログラフィックメモリにおける空間直交振幅変調信号光の非干渉型検出法に関する検討
    • Organizer
      電子情報通信学会磁気記録・情報ストレージ研究会
    • Related Report
      2018 Research-status Report
    • Invited
  • [Presentation] Detection Method of Complex Amplitude of Signal Beam for Intensity- and Phase-modulated Holographic Memory2018

    • Author(s)
      Masatoshi Bunsen, Shosei Tateyama, Soichiro Sumida
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Phase detection of SQAM signal beam with sinusoidal phase modulation by transport of intensity equation2018

    • Author(s)
      Shosei Tateyama, Soichiro Sumida, and Masatoshi Bunsen
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] 固定回路を用いた強度輸送方程式法による空間直交振幅変調信号光復調の検討2018

    • Author(s)
      角田総一朗,文仙正俊
    • Organizer
      平成30年度応用物理学会九州支部学術講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Detection of Spatially Quadrature Amplitude Modulated Signal with Multilevel Intensity and Phase Modulation by Transport of Intensity Equation Method2017

    • Author(s)
      Shosei Tateyama, Kazutaka Kanno, Masatoshi Bunsen
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 強度及び位相に多値変調を施した信号光の強度輸送方程式による検出2017

    • Author(s)
      立山翔生,菅野円隆,文仙正俊
    • Organizer
      第78回応用物理学会秋季学術講演会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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