8 September 2016 Numerical evaluation of shift multiplexing using a spherical wave in a holographic memory based on a computer-generated hologram
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Abstract
Shift multiplexing method using a spherical wave is proposed for a holographic memory system based on a computer-generated hologram (CGH). In the proposed method, a propagated signal beam along an optical axis is generated by a CGH. The zero order beam of the CGH is obtained as a point source in the Fourier plane. This point source becomes a spherical reference beam on a recording medium by displacing a Fourier transform lens. The use of the spherical reference beam allows us to implement shift multiplexing in the holographic memory based on a CGH. Shift selectivity of the proposed method is numerically evaluated. In addition, shift multiplexing with the proposed method is numerically demonstrated.
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Teruyoshi Nobukawa, Teruyoshi Nobukawa, Takanori Nomura, Takanori Nomura, } "Numerical evaluation of shift multiplexing using a spherical wave in a holographic memory based on a computer-generated hologram", Proc. SPIE 9959, Optical Data Storage 2016, 99590B (8 September 2016); doi: 10.1117/12.2237631; https://doi.org/10.1117/12.2237631
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