Optimization of the geometrical shape of the aperture in holographic data storage system

Huarong Gu; Songfeng Yin; Qiaofeng Tan; Liangcai Cao; Qingsheng He; Guofan Jin

doi:10.1117/12.755757

21 November 2007 Optimization of the geometrical shape of the aperture in holographic data storage system

Huarong Gu, Songfeng Yin, Qiaofeng Tan, Liangcai Cao, Qingsheng He, Guofan Jin

Proceedings Volume 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography; 68271I (2007) https://doi.org/10.1117/12.755757
Event: Photonics Asia 2007, 2007, Beijing, China

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.

Citation Download Citation

Huarong Gu, Songfeng Yin, Qiaofeng Tan, Liangcai Cao, Qingsheng He, and Guofan Jin "Optimization of the geometrical shape of the aperture in holographic data storage system", Proc. SPIE 6827, Quantum Optics, Optical Data Storage, and Advanced Microlithography, 68271I (21 November 2007); https://doi.org/10.1117/12.755757

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