Increase of signal-to-noise ratio of a collinear holographic storage system with reference modulated by a ring lens array

被引：24

作者：

Yu, Yeh-Wei ^{[1
]}

Chen, Chih-Yuan ^{[1
]}

Sun, Ching-Cherng ^{[1
]}

机构：

[1] Natl Cent Univ, Dept Opt & Photon, Chungli 320, Taiwan

来源：

OPTICS LETTERS | 2010年 / 35卷 / 08期

关键词：

VOLUME HOLOGRAMS; SPREAD FUNCTION;

D O I：

10.1364/OL.35.001130

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We propose an approach of a reference modulation in a collinear holographic storage system to increase the signal-to-noise ratio (SNR). We derive a solution that shows that the point-spread function is related to the autocorrelation function of the reference pattern times a defocusing phase term. Accordingly, the lens-array phase modulation is proposed and demonstrated theoretically. The SNR of the system can be dramatically enhanced to 63.2, rather than 2.3 in the traditional approach. (C) 2010 Optical Society of America

引用

页码：1130 / 1132

页数：3

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