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Related Experiment Videos

Write-once recording for multilayered optical waveguide-type holographic cards.

Tokinobu Mitasaki1, Masakatsu Senda

  • 1NTT Cyber Space Laboratories, NTT Corporation, Kanagawa, Japan. mitasaki.tokinibu@lab.ntt.co.jp

Journal of the Optical Society of America. A, Optics, Image Science, and Vision
|March 17, 2006
PubMed
Summary

This study introduces a novel write-once recording technique for optical waveguide holographic cards. This method enables high-density data storage with a potential capacity exceeding 128 bits.

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Identification data reproduction in multilayered optical waveguide-type holographic memory cards.

Applied opticsยท2008
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Area of Science:

  • Optoelectronics
  • Materials Science
  • Data Storage Technologies

Background:

  • Multilayered optical waveguides are crucial for advanced optical systems.
  • Holographic data storage offers high density but faces recording challenges.
  • Write-once recording techniques are desirable for data integrity and simplicity.

Purpose of the Study:

  • To develop a write-once recording technique for multilayered optical waveguide-type holographic cards.
  • To demonstrate a novel data encoding method using optically transparent holes.
  • To achieve a high memory capacity potential in a compact holographic card format.

Main Methods:

  • Designing a card medium with core, cladding, recording, and holographic grating layers.
  • Implementing data recording by forming optically transparent holes in the recording layer.

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  • Utilizing common holograms in the grating layer to focus diffracted light onto an image sensor.

    • Main Results:

    • Successful implementation of a write-once recording technique.
    • Demonstration of data encoding via patterned optically transparent holes.
    • Achieved a memory capacity potential exceeding 128 bits.

    Conclusions:

    • The proposed technique offers a viable solution for write-once holographic data storage.
    • The multilayered waveguide structure facilitates efficient data retrieval.
    • This technology has potential for secure and high-capacity data archiving.