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Integrated-optic devices for high-density optical data readout

Research Project

Project/Area Number 62460136
Research Category

Grant-in-Aid for General Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field 電子機器工学
Research InstitutionOsaka University

Principal Investigator

NISHIHARA H.  Faculty of Engineering, Osaka University Professor, 工学部, 教授 (00029018)

Co-Investigator(Kenkyū-buntansha) SUHARA T.  Faculty of Engineering, Osaka University Research Assistant, 工学部, 助手 (90116054)
HARUNA M.  Faculty of Engineering, Osaka University Associate Professor, 工学部, 助教授 (20029333)
Project Period (FY) 1987 – 1988
Project Status Completed (Fiscal Year 1988)
Budget Amount *help
¥5,900,000 (Direct Cost: ¥5,900,000)
Fiscal Year 1988: ¥1,600,000 (Direct Cost: ¥1,600,000)
Fiscal Year 1987: ¥4,300,000 (Direct Cost: ¥4,300,000)
KeywordsOptical integrated circuits / Integrated optics / Optical memory / 光ピックアップ
Research Abstract

This research project aimed at the implementation of integrated-optic devices for data readout in high-density optical disk memories.
The first step of the project was to establish the design and fabrication techniques of a focusing grating coupler (FGC), adopted as a focusing element. Theoretical analyses were made on the optimization of device parameters to obtain a high efficiency and diffraction-limited focusing properties. The fabrication technique was established by using the electrom-beam direct writing and the reactive ion etching.
A monolithic integrated optic disk pickup device (IODPU) capable of detecting readout and focusing/tracking error signals was proposed and designed. The IODPU is constructed by integrating a FGC, a grating focusing beam splitter and photodiodes in a film waveguide on a Si substrate. The prototype device was fabricated in a glass/SiO_2/Si waveguide. The fundamental operation, i.e., the detection of readout and focusing/tracking error signals, has been experimentally confirmed.
The data readout in magnetooptic disk for read/write memory is based on the detection of polarization rotation caused by the magnetic Kerr effect. An integrated-optic devic capable of the differential detection readout was proposed and designed. In the fabricated device, defferential detection of polarization rotation was demonstrated.
The data readout response of integrated-optic pickup devices was theoretically analized in order to clarify the unique properties and establish the optimum design technique. It was found through this analysis that the integrated-optic pickups can exhibit a readout resolution higher than that of pickups using conventional lenses.

Report

(3 results)
  • 1988 Annual Research Report   Final Research Report Summary
  • 1987 Annual Research Report
  • Research Products

    (26 results)

All Other

All Publications (26 results)

  • [Publications] H.,Sunagawa;S.,Ura;T.,Suhara;H.,Nishihara: Tech.Digest of International Symposium on Optical Memory. NoFA7. 247-250 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S.,Ura;T.,Suhara;H.,Nishihara: Appl.Opt.26. 4777-4782 (1987)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S.,Ura;H.,Sunagawa;T.,Suhara;H.,Nishihara: J.Lightwave Tech.LT-6. 1028-1033 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 石丸弘之,裏升吾,栖原敏明,西原浩: 信学技報. OQE88. No-117 (1988)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] 栖原敏明,西原浩: 光学. 18. 82-90 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T.,Suhara;H.,Nishihara: Proc.SPIE. (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H.,Nishihara;M.,Haruna;T.,Suhara: ""Optical Integrated Circuits"" McGrow-Hill Publishing, 375 (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T.,Suhara;S.,Ura;H.,Nishihara: ""Integrated-optic disc pickup devices"in"Optical computing in Japan"(Ed.S.Ishihara)" Nova Science Publishers, (1989)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] H. Sunagawa; S. Ura; T. Suhara; H. Nishihara: "An integrated-optic detection device for magnetooptical disc pickup" Tech. Digest of Int. Symp. on Optical Memory. No FA7. 247-250 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S. Ura; T. Suhara; H. Nishihara: "Aberration characterizations of a focusing grating coupler in an integrated-optic disc pickup device" Appl. Opt.26. 4777-4728 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S. Ura; H. Sunagawa; T. Suhara; H. Nishihara: "Focusing grating coupler for polarization detection" J. Lightwave Tech.LT-6. 1028-1033 (1988)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Suhara; H. Nishihara: "Analysis of read-out response in integrated-optic disc pickup" Japanese J. Optics. 18. 82-90 (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Suhara; H. Nishihara: "Integrated-optic disc pickup devices using waveguide holographic components" Proc. SPIE. (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] T. Suhara; S. Ura; H. Nishihara: "Integrated-optic disc pickup devices," in "Optical computing in Japan"(Ed. S. Ishihara). Nova Science Publishers Inc., (1989)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1988 Final Research Report Summary
  • [Publications] S.Ura;H.Sunagawa;T.Suhara;H.Nishihara: J.Lightwave Tech.LTー6. 1028-1033 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 石丸弘之,裏弁吾,栖原敏明,西原浩: 信学技報. OQE88. No-105 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 栖原敏明,西原浩: 信学技報. OQE88. No-117 (1988)

    • Related Report
      1988 Annual Research Report
  • [Publications] 栖原敏明,西原浩: 光学. 18. 82-90 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Suhara;H.Nishihara: Proc.SPIE. (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Nishigara;M.Haruna;T.Suhara: ""Optical Integrated Circuits"" McGraw-Hill Publishing Co., 1-375 (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] T.Suhara;S.Ura;H.Nishigara: ""Integrated-optic disc pickup devices"in "Optcal computing in Japan"" Nova Science Publishers Inc., (1989)

    • Related Report
      1988 Annual Research Report
  • [Publications] H.Suhagawa;S.Ura;T.Suhara;H.Nishihara: Technical Digest of International Symposiun on Optical Memory. No FA7. 247-250 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] S.Ura;T.Suhara;H.Nishihara: Technical Digest of Microoptics Conference. Moc-87. 202-205 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] S.Ura;T.Suhara;H.Nishihara: Appl.Opt.26. 4777-4782 (1987)

    • Related Report
      1987 Annual Research Report
  • [Publications] S.Ura;H.Sunagawa;T.Suhara;H.Nishihara: J.Lightwave Tech. LT-6. (1988)

    • Related Report
      1987 Annual Research Report
  • [Publications] S.Ura;H.Sunagawa;T.Suhara;H.Nishihara: Tech bigest of Topical Meeting on Integrated and Gmided Wave Optics. (1988)

    • Related Report
      1987 Annual Research Report

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Published: 1987-04-01   Modified: 2016-04-21  

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