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5 September 2014 Shifting tolerance for multilayer collinear holographic data storage
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The shifting tolerance of the collinear holographic data storage system is discussed considering its influences on the quality of the reconstructed data pages and the precision of the holographic disk actuator. The diffractive efficiencies with shifting along the x-axis and the z-axis are calculated respectively based on the bit error rates of the reconstructed data pages. The numerical aperture of the objective lens and the recording wavelength show different impacts on the shifting tolerance and the storage density. The orthogonal reference pattern shift multiplexing method is investigated. It is proved that the method could improve the data storage density by keeping the shifting tolerance.
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Jinqiu Liu, Liangcai Cao, Qingsheng He, and Guofan Jin "Shifting tolerance for multilayer collinear holographic data storage", Proc. SPIE 9201, Optical Data Storage 2014, 92010H (5 September 2014);

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