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Proceedings Paper

Optimization of the geometrical shape of the aperture in holographic data storage system
Author(s): Huarong Gu; Songfeng Yin; Qiaofeng Tan; Liangcai Cao; Qingsheng He; Guofan Jin
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Paper Abstract

A cross-shaped aperture is proposed for the Holographic Data Storage System (HDSS). Based on the non-symmetric HDSS model, numerical simulations are carried out to compare the sensitivity to pixel shift, magnification error and noise level of the cross-shaped aperture with the ordinary square aperture. The simulation results show that equivalent or lower bit error rate can be achieved with the optimized cross-shaped aperture than that with the square aperture, while the area of the cross-shaped aperture is 20 percent less than the corresponding square aperture. Thereby the multiplexing spacing can be reduced and the areal density can be increased in HDSS. Experimental results of the performances of the cross-shaped aperture from a custom-built HDSS are presented.

Paper Details

Date Published: 21 November 2007
PDF: 9 pages
Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271I (21 November 2007); doi: 10.1117/12.755757
Show Author Affiliations
Huarong Gu, Tsinghua Univ. (China)
Songfeng Yin, Tsinghua Univ. (China)
Qiaofeng Tan, Tsinghua Univ. (China)
Liangcai Cao, Tsinghua Univ. (China)
Qingsheng He, Tsinghua Univ. (China)
Guofan Jin, Tsinghua Univ. (China)

Published in SPIE Proceedings Vol. 6827:
Quantum Optics, Optical Data Storage, and Advanced Microlithography
Chris A. Mack; Guangcan Guo; Guofan Jin; Song-hao Liu; Kees A. Schouhamer Immink; Jinfeng Kang; Jun-en Yao; Keiji Shono; Osamu Hirota, Editor(s)

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