Abstract

An associative memory is implemented by using a binary phase-only filter as the memory element in a two-focal-length (2-f) correlator architecture. A sharp autocorrelation peak, combined with the 2-f architecture, allows the noise to be separated adequately from the signal such that a simple plane mirror can be used in the correlation plane instead of a nonlinearity.

© 1992 Optical Society of America

Limitations of a class of binary phase-only filters

Donald C. Wunsch, Robert J. Marks, Thomas P. Caudell, and C. David Capps
Appl. Opt. 31(26) 5681-5687 (1992)

Design elements of binary phase-only correlation filters

David L. Flannery, John S. Loomis, and Mary E. Milkovich
Appl. Opt. 27(20) 4231-4235 (1988)

Reduction of false correlations with binary phase-only filters

Thomas H. Barnes, Kiyofumi Matsuda, and Naotake Ooyama
Appl. Opt. 27(18) 3785-3790 (1988)

Bandwidth considerations for binary phase-only filters

Fred M. Dickey, K. Terry Stalker, and J. Jeff Mason
Appl. Opt. 27(18) 3811-3818 (1988)

Optical binary phase-only filters for circular harmonic correlations

Luc Leclerc, Yunlong Sheng, and Henry H. Arsenault
Appl. Opt. 30(32) 4643-4649 (1991)