Cross talk between holograms of finite contrast in a phase-code multiplexing system.
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.
Kim
Hyun
H
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyongkido 440-746, South Korea.
Lee
Yeon H
YH