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Optical Engineering

Optical processing with feedback using smart-pixel spatial light modulators
Author(s): Jonathan S. Kane; Thomas G. Kincaid; Philip L. Hemmer
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Paper Abstract

A spatial light modulator is often used as the basic element in real-time recognition architectures. However, many of the devices suffer from poor uniformity and/or nonlinearities that affect the overall performance of any real-time recognition scheme. We propose using optical feedback as a method of improving device performance. We demonstrate both positive and negative feedback separately through a mixture of on-board electronic processors and optical polarization intensity encoding. Placing the spatial light modulator in a positive feedback system causes the system to act like a memory. Placing the spatial light modulator in a negative feedback system makes the spatial light modulator response more analog, which in turn leads to improved uniformity.

Paper Details

Date Published: 1 March 1998
PDF: 6 pages
Opt. Eng. 37(3) doi: 10.1117/1.601646
Published in: Optical Engineering Volume 37, Issue 3
Show Author Affiliations
Jonathan S. Kane, Computer Optics, Inc. (United States)
Thomas G. Kincaid, Boston Univ. (United States)
Philip L. Hemmer, Air Force Rome Lab. (United States)

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