Share Email Print
cover

Proceedings Paper

Extended reference method for cross-talk noise reduction in photorefractive holographic data storage
Author(s): Foster F. Dai; Claire Gu
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper 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.

Paper Details

Date Published: 25 October 1996
PDF: 11 pages
Proc. SPIE 2849, Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II, (25 October 1996); doi: 10.1117/12.255468
Show Author Affiliations
Foster F. Dai, The Pennsylvania State Univ. (United States)
Claire Gu, The Pennsylvania State Univ. (United States)


Published in SPIE Proceedings Vol. 2849:
Photorefractive Fiber and Crystal Devices: Materials, Optical Properties, and Applications II
Francis T. S. Yu; Shizhuo Yin, Editor(s)

© SPIE. Terms of Use
Back to Top