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Related Experiment Videos

Encrypted optical storage with angular multiplexing.

O Matoba1, B Javidi

  • 1Institute of Industrial Science, University of Tokyo, 7-22-1 Minato-ku, Roppongi, Tokyo 106-8558, Japan. matoba@iis.u-tokyo.ac.jp

Applied Optics
|March 8, 2008
PubMed
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This study demonstrates secure optical data storage using double-random phase encoding and angular multiplexing in photorefractive materials. This method enables encrypted storage and retrieval of multiple data frames with high fidelity.

Area of Science:

  • Optics and Photonics
  • Information Security
  • Materials Science

Background:

  • Holographic data storage offers high density but requires robust security measures.
  • Photorefractive materials are suitable for holographic storage due to their dynamic nature.
  • Double-random phase encoding is a known technique for optical data encryption.

Purpose of the Study:

  • To demonstrate a novel method for encrypted optical data storage.
  • To utilize angular multiplexing for storing multiple encrypted data frames.
  • To analyze the impact of optical system bandwidth on data retrieval accuracy.

Main Methods:

  • Employing double-random phase encoding with two random phase codes at input and Fourier planes.
  • Holographically storing encrypted data in a Lithium Niobate:Iron (LiNbO(3):Fe) crystal.

Related Experiment Videos

  • Using a phase-conjugated readout scheme for data decryption.
  • Implementing angular multiplexing to store multiple data frames.

    • Main Results:

    • Successful encryption and holographic storage of two-dimensional digital data.
    • Demonstration of retrieving multiple encrypted data frames using angular multiplexing.
    • Numerical evaluation showing the influence of optical system bandwidth on the bit error rate.
    • Quantification of the relationship between system bandwidth and data decryption accuracy.

    Conclusions:

    • The proposed method provides a secure and effective approach for optical data storage.
    • Angular multiplexing allows for efficient storage of multiple encrypted data sets.
    • System bandwidth is a critical parameter affecting the fidelity of decrypted data.