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Shift-multiplexed self-referential holographic data storage.

Masanori Takabayashi, Atsushi Okamoto, Taisuke Eto

|August 5, 2014

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Shift-multiplexed self-referential holographic data storage (SR-HDS) shows promising referenceless recording. Numerical and experimental results confirm its shift selectivity is comparable to collinear holography, enabling high-density data storage.

Area of Science:

Optics and Photonics
Information Storage Technologies

Background:

Self-referential holographic data storage (SR-HDS) offers referenceless recording capabilities.
The multiplexing properties of SR-HDS, crucial for data storage density, remained largely uncharacterized.

Purpose of the Study:

To investigate the feasibility and properties of shift-multiplexed SR-HDS.
To clarify the multiplexing characteristics, specifically shift selectivity, of SR-HDS.

Main Methods:

Numerical simulations were employed to evaluate medium shift dependence.
Experimental evaluations were conducted to assess SR-HDS properties.
Shift selectivity was analyzed in the context of holographic data storage.

Main Results:

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Shift selectivity in SR-HDS was found to be comparable to that of collinear holography.
Numerical simulations demonstrated the successful shift-multiplexing of 25 datapages.
A shift pitch of 8.3 μm was utilized in the successful multiplexing simulation.

Conclusions:

SR-HDS is a feasible technology for holographic data storage.
The shift-multiplexing properties of SR-HDS are well-defined and comparable to existing methods.
SR-HDS demonstrates potential for high-density data storage applications.