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    A novel phase mask design for holographic storage systems (HDS) doubles data transfer rates and increases recording density by 1.1x. This innovation enhances storage capacity and speed by utilizing previously unused regions for phase signals.

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    Area of Science:

    • Optics and Photonics
    • Data Storage Technologies

    Background:

    • Conventional holographic storage systems (HDS) face limitations in data transfer rates and recording density.
    • Existing phase mask designs do not fully utilize available space for data encoding.

    Purpose of the Study:

    • To introduce a newly designed phase mask for holographic storage systems.
    • To evaluate the performance of intensity-phase modulated multilevel signals using the novel mask.

    Main Methods:

    • Developed a novel phase mask design incorporating phase signals into non-signal regions.
    • Performed detection and evaluation of intensity-phase modulated multilevel signals.
    • Compared performance against conventional phase mask designs.

    Main Results:

    • Doubled the data transfer rate compared to conventional methods.
    • Increased recording density by approximately 1.1 times.
    • Successfully maintained crosstalk noise suppression.

    Conclusions:

    • The proposed phase mask design significantly improves holographic storage system performance.
    • This design offers a viable method for enhancing data transfer rates and recording density.
    • The approach effectively suppresses crosstalk noise while improving storage efficiency.