Abstract

A real-time optical correlator based on the principle of one-bit correlation, often used to facilitate the construction of real-time digital signal processors, is shown to have a greater immunity to mechanical noise than a comparable analog optical correlator. One-bit quantization also avoids some of the difficulties encountered with nonlinear light modulators. The one-bit optical correlator was studied by means of a computer simulation and an experimental system. Application of the technique to a multichannel correlator is discussed.

© 1973 Optical Society of America

New Multichannel Optical Correlator

G. J. M. Aitken and L. Wang
Appl. Opt. 10(11) 2476-2481 (1971)

Additional Filters Enhancing the Sensitivity of an Optical Correlator

A. Engel
Appl. Opt. 12(4) 743-748 (1973)

Two-bit correlation

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

Optical Correlation Using Diffuse Objectsf

R. J. Bieringer
Appl. Opt. 12(2) 249-254 (1973)

Real-time all-optical performance monitoring using optical bit-shape correlation

Feras Abou-Galala and Betty Lise Anderson
Appl. Opt. 48(5) 924-931 (2009)