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Numerical evaluation of shift multiplexing using a spherical wave in a holographic memory based on a computer-generated hologram
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Paper 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.

Paper Details

Date Published: 8 September 2016
PDF: 6 pages
Proc. SPIE 9959, Optical Data Storage 2016, 99590B (8 September 2016); doi: 10.1117/12.2237631
Show Author Affiliations
Teruyoshi Nobukawa, Wakayama Univ. (Japan)
Japan Society for the Promotion of Science (Japan)
Takanori Nomura, Wakayama Univ. (Japan)

Published in SPIE Proceedings Vol. 9959:
Optical Data Storage 2016
Ryuichi Katayama; Thomas D. Milster, Editor(s)

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