Kim Hyun, Lee Yeon H
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyongkido 440-746, South Korea.
Opt Lett. 2004 Jan 1;29(1):113-5. doi: 10.1364/ol.29.000113.
The cross talk between holograms recorded in a phase-code multiplexing system is analyzed. The signal-to-noise ratio (SNR) is derived for the original image of a finite contrast ratio in the presence of a phase-shift error of the reference beam. It is shown that one particular code in the Walsh-Hadamard code set can be the dominant cross-talk noise source. We experimentally measured the SNR of the holograms recorded in an 8-bit phase-code multiplexing system by varying the contrast ratio of the original image. We show good agreement between experiment and theory. The existence of one bad code is also shown experimentally.
分析了在相位编码复用系统中记录的全息图之间的串扰。推导了在参考光束存在相移误差的情况下，具有有限对比度的原始图像的信噪比（SNR）。结果表明，沃尔什 - 哈达玛码集中的一个特定码可能是主要的串扰噪声源。我们通过改变原始图像的对比度，实验测量了8位相位编码复用系统中记录的全息图的SNR。实验和理论之间显示出良好的一致性。实验还表明存在一个坏码。
