NONLINEAR COMPANSIVE NOISE-REDUCTION IN JOINT TRANSFORM CORRELATORS

Authors
KHOURY J ASIMELLIS G GIANINO PD WOODS CL
Citation
J. Khoury et al., NONLINEAR COMPANSIVE NOISE-REDUCTION IN JOINT TRANSFORM CORRELATORS, Optical engineering, 37(1), 1998, pp. 66-74
Citations number
26
Categorie Soggetti
Optics
Journal title
Optical engineering → ACNP
ISSN journal
00913286
Volume
37
Issue
1
Year of publication
1998
Pages
66 - 74
Database
ISI
SICI code
0091-3286(1998)37:1<66:NCNIJT>2.0.ZU;2-U
Abstract
Compansive diffraction nonlinearities reduce the noise and improve the performance of joint transform correlators. The compression and expan sion of the photorefractive two-beam coupling parallel optical device is similar to that of the limiting square-law serial electronic receiv er. Computer simulations of this device indicate superior performance over a wide range of noise levels. (C) 1998 Society of Photo-Optical I nstrumentation Engineers. [S0091-3286(98)01901-1].