25 October 1996 Extended reference method for cross-talk noise reduction in photorefractive holographic data storage
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Abstract
For reducing the cross-talk noise and improving the storage capacity in angle-multiplexed volume holographic memories, a novel recording method is proposed. The technique employs a recording reference extending uniformly within a narrow spatial frequency bandwidth and reads the memory with a plane wave. Comparing to the conventional recording method with planar reference waves, the analytical results show that the signal-to-noise ratio obtained by using the extended reference method is about 20 dB higher. Moreover, a statistical analysis of the interpixel cross-talk noise is presented and the noise-to-signal ratio is given in a closed-form for both point reference method and extended reference method. Considering both interpage and interpixel cross-talk limited storage density. The results show that the proposed extended reference method achieves about 10 times larger storage density than the point reference method.
© (1996) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Foster F. Dai, Foster F. Dai, Claire Gu, Claire Gu, } "Extended reference method for cross-talk noise reduction in photorefractive holographic data storage", Proc. SPIE 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II, (25 October 1996); doi: 10.1117/12.255468; https://doi.org/10.1117/12.255468
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