Two Improved Coherent Optical Feedback Systems For Optical Information Processing

12 January 1977

proceedings article
Published by SPIE-Intl Soc Optical Eng

Vol. 0083, 78-84
https://doi.org/10.1117/12.954901

Abstract

Coherent optical feedback systems are Fabry-Perot interferometers modified to perform optical information processing. Two new systems based on plane parallel and confocal Fabry-Perot interferometers are introduced. The plane parallel system can be used for contrast control, intensity level selection, and image thresholding. The confocal system can be used for image restoration and solving partial differential equations. These devices are simpler and less expensive than previous systems. Experimental results are presented to demonstrate their potential for optical information processing.

Keywords

PHOTOCHROMISM
TRANSMITTANCE
IMAGE RESTORATION
PARTIAL DIFFERENTIAL EQUATIONS
NONLINEAR OPTICS
COHERENT LIGHT
INTERFEROMETERS
OPTICAL FEEDBACK
FEEDBACK
FEEDBACK CONTROL

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