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Optical Engineering

Optical implementations of the alternating projection neural network
Author(s): Alan T. Smith; John F. Walkup
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Paper Abstract

The results of two electro-optical implementations of the alternating projection neural network (APNN) are presented. Both configurations use optical matrix-vector multipliers with electronic feedback, but different spatial light modulators are employed. The first implementation is passive, employing a photographic transparency that intensity-modulates the incident incoherent light. In the second implementation, two spatial light modulators actively modulate the light, permitting real-time updating of the interconnection matrix elements. To the authors' knowledge, the implementations described are the first of the APNN.

Paper Details

Date Published: 1 October 1991
PDF: 7 pages
Opt. Eng. 30(10) doi: 10.1117/12.55972
Published in: Optical Engineering Volume 30, Issue 10
Show Author Affiliations
Alan T. Smith, Lockeed Engineering & Sciences Co. (United States)
John F. Walkup, NASA Ames Research Ctr. (United States)


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