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Proceedings Paper

Experimental Results From An Optical Implementation Of A Simple Neural Network
Author(s): H. J. White
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Paper Abstract

Here we present results from an optical implementation of a simple neural network. An optically addressed spatial light modulator (SLM) is used to perform thresholding and thin amplitude computer generated holograms perform the weighted interconnections. Two 6-bit vectors and their complements were stored as the memories and the network was found to always converge to the memory closest in terms of Hamming distance to the input vector. This performance is better than that of an electronic simulation of the model and this difference has been found to result from the temporal characteristics of the SLM (a Hughes Liquid Crystal Light Valve (LCLV)). This temporal response behaviour gives greater stability to the memories and as such allows a larger number of memories to be stored on a given size of network. It is believed that this temporal re-sponse can be used to advantage in future neural network implementations using fast nonlinear optical devices.

Paper Details

Date Published: 8 February 1988
PDF: 8 pages
Proc. SPIE 0963, Optical Computing '88, (8 February 1988); doi: 10.1117/12.947939
Show Author Affiliations
H. J. White, British Aerospace PLC (U.K.)

Published in SPIE Proceedings Vol. 0963:
Optical Computing '88
Pierre H. Chavel; Joseph W. Goodman; Gerard Roblin, Editor(s)

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