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    This study introduces a novel multiplexed recording method using uncorrelated computer-generated reference patterns (CGRPs) to enhance holographic data storage density. The technique effectively suppresses crosstalk, improving data quality and storage capacity.

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    Area of Science:

    • Optics and Photonics
    • Data Storage Technologies
    • Information Science

    Background:

    • Coaxial holographic data storage offers potential for high-density information retrieval.
    • Improving light efficiency and data reconstruction quality is crucial for practical applications.
    • Crosstalk between adjacent holograms limits recording density in conventional methods.

    Purpose of the Study:

    • To propose and experimentally validate a multiplexed recording method using uncorrelated computer-generated reference patterns (CGRPs).
    • To suppress crosstalk in holographic data storage without requiring medium shift.
    • To enhance recording density and data quality in holographic storage systems.

    Main Methods:

    • Development of a multiplexed recording technique employing uncorrelated CGRPs.
    • Experimental investigation of shift selectivity for hologram discrimination.
    • Performance evaluation of the proposed method against conventional shift multiplexing.

    Main Results:

    • Demonstrated suppression of crosstalk between adjacent holograms.
    • Achieved higher recording density compared to conventional shift multiplexing techniques.
    • Experimental validation of the feasibility of using uncorrelated CGRPs for multiplexed recording.

    Conclusions:

    • The proposed method effectively reduces crosstalk, enabling higher-density holographic data storage.
    • Uncorrelated CGRPs offer a viable alternative to medium shifting for multiplexing.
    • Theoretical analysis suggests potential for using at least 100 uncorrelated CGRPs.