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Recording and reading method of multi-level complex amplitude data for holographic memories

Research Project

Project/Area Number 17K06378
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Electron device/Electronic equipment
Research InstitutionUniversity of Yamanashi

Principal Investigator

HONMA Satoshi  山梨大学, 大学院総合研究部, 准教授 (70362085)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2019: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2017: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Keywordsホログラフィックメモリ / 複素振幅信号 / 多重記録 / 二重露光法 / 位相交互配置法 / SQAM信号 / ワンショット記録 / 位相変調信号 / 空間変調器 / データストレージ / ホログラム多重 / 電子デバイス・機器
Outline of Final Research Achievements

The purpose of this research is to record the complex amplitude signal light whose amplitude and phase are simultaneously multi-valued in a holographic memory with a simple optical system, and to greatly improve the recording capacity. We proposed a method of equivalently synthesizing holograms of complex amplitude data by multiplexing recording of two holograms of different phase-modulated signal lights. It is also revealed that the accuracy of the reproduced SQAM signal can be improved significantly by implementing error correction technology and digital filter processing recursively. In addition, we proposed an interleaved method as a method for recording SQAM signals with high accuracy and reduced consumption of monomer, and evaluated the reproduction accuracy by analysis and experiment.

Academic Significance and Societal Importance of the Research Achievements

光波の振幅と位相を同時に制御する空間変調器が存在しないため,従来はこれらを個別の変調器で制御することにより複素振幅信号を生成していた.本研究では1台の空間変調器を使用した光学系で,振幅と位相を独立に多値に変調した複素振幅信号を生成する手法を提案した.ホログラフィックメモリの光学系が小型化し,また開発コストを大幅に低減することが期待される.また,位相と振幅を制御する手法は,ホログラフィックメモリに限らず,結像距離を任意の調整可能なプロジェクタや多モードファイバ中の伝搬光制御など,多岐に応用が期待できる.

Report

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

    (12 results)

All 2020 2019 2018

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (11 results) (of which Int'l Joint Research: 8 results)

  • [Journal Article] A two-step exposure method with interleaved phase pages for recording of SQAM signal in holographic memory2019

    • Author(s)
      Honma Satoshi、Funakoshi Haruki
    • Journal Title

      Japanese Journal of Applied Physics

      Volume: 58 Issue: SK Pages: SKKD05-SKKD05

    • DOI

      10.7567/1347-4065/ab2be1

    • NAID

      210000156792

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] ホログラフィックメモリのための位相交互配置法を用いたSQAM信号記録と記録密度の評価2020

    • Author(s)
      本間 聡,舩越 悠希
    • Organizer
      マルチメディアストレージ研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Holographic projector using phase interleaved method2019

    • Author(s)
      Haruki Watanabe and Satoshi Honma
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] High density recording by interleave method with RLL code for holographic memory2019

    • Author(s)
      Haruki Funakoshi and Satoshi Honma
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Reproduction of SQAM signal using interleaved phase page based on two-step exposure method for holographic memory2019

    • Author(s)
      Satoshi Honma and Haruki Funakoshi
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ホログラフィックメモリのための交互配置位相ページ を用いた二重露光法によるSQAM信号記録2019

    • Author(s)
      本間 聡,舩越 悠希
    • Organizer
      磁気記録・情報ストレージ研究会
    • Related Report
      2019 Annual Research Report
  • [Presentation] ホログラフィックメモリのための交互配置法によるSQAM信号生成2019

    • Author(s)
      本間 聡, 舩越 悠希
    • Organizer
      電子情報通信学会 総合大会
    • Related Report
      2018 Research-status Report
  • [Presentation] Synthesizing complex amplitude data with multiple intensity page for holographic memory2018

    • Author(s)
      Haruki Funakoshi and Satoshi Honma
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] SOVA decoding and FIR filtering for holographic memory with Two-step exposure method2018

    • Author(s)
      Hikaru Takahashi and Satoshi Honma
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spatial Quadrature Amplitude Modulation Signal with Orthogonal code for Holographic memories and Two-step exposure method2018

    • Author(s)
      Satoshi Honma,Hikaru Takahashi, Haruki Watanabe
    • Organizer
      International Symposium on Imaging, Sensing, and Optical Memory 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spatial Quadrature Amplitude Modulator with Photorefractive Device based on Two-step Exposure Method for Holographic Memories2018

    • Author(s)
      Satoshi Honma and Hikaru Takahashi
    • Organizer
      international symposium Imaging, Sensing, And Optical Memory 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Compensation of SQAM signal with pilot signal for two-step exposure method in holographic data storage2018

    • Author(s)
      Hikaru Takahashi and Satoshi Honma
    • Organizer
      international symposium Imaging, Sensing, And Optical Memory 2018
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research

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Published: 2017-04-28   Modified: 2021-02-19  

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