Abstract

We examine the effect of phase distortion inherent in a spatial light modulator on the performance of an optical correlator. We examine such areas as input plane distortion, input and Fourier plane distortion, effect of phase mismatch between these planes, and the effect of additive white noise. When large distortions are present and the proper compensation is incorporated into the filter, we find a significant enhancement in performance in that the correlation response converges to a δ function and the SNR increases significantly. A theory is presented to explain this behavior.

© 1987 Optical Society of America

Real-time joint transform correlation by partially coherent readout illumination

Bahram Javidi
Appl. Opt. 26(18) 3762-3771 (1987)

Two-bit correlation

Joseph L. Horner and Harmut O. Bartelt
Appl. Opt. 24(18) 2889-2893 (1985)

Comparative effects of optical-correlator signal-dependent and signal-independent noise on pattern-recognition performance with the phase-only filter

Jean-Christophe Terrillon
Appl. Opt. 34(32) 7561-7564 (1995)

Distortion invariant pattern recognition with phase filters

Joseph Rosen and Joseph Shamir
Appl. Opt. 26(12) 2315-2319 (1987)

Effects of quadratic phase distortion on correlator performance

Joseph L. Horner and Peter D. Gianino
Appl. Opt. 31(20) 3876-3878 (1992)