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Proceedings Paper

Optical implementation of a single-layer finite impulse response neural network
Author(s): Paulo E. X. Silveira; G. S. Pati; Kelvin H. Wagner
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Paper Abstract

This paper demonstrates a space integrating optical implementation of a single-layer FIRNN. A scrolling spatial light modulator is used for representing the spatio-temporal input plane, while the weights are implemented by the adaptive grating formation in a photorefractive crystal. Differential heterodyning is used for low-noise bipolar output detection and an active stabilization technique using a lock-in amplifier and a piezo-electric actuator is adopted for long term interferometric stability. Simulations and initial experimental results for adaptive sonar broadband beamforming are presented.

Paper Details

Date Published: 24 May 2000
PDF: 12 pages
Proc. SPIE 4089, Optics in Computing 2000, (24 May 2000); doi: 10.1117/12.386885
Show Author Affiliations
Paulo E. X. Silveira, Univ. of Colorado/Boulder (United States)
G. S. Pati, Univ. of Colorado/Boulder (India)
Kelvin H. Wagner, Univ. of Colorado/Boulder (United States)


Published in SPIE Proceedings Vol. 4089:
Optics in Computing 2000
Roger A. Lessard; Tigran V. Galstian, Editor(s)

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