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Optical Engineering

All-optical associative memory using photorefractive crystals and a saturable absorber
Author(s): Markus Duelli; Roger S. Cudney; Claudia Keller; Peter Guenter
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Paper Abstract

We report on the investigation of a new configuration of an all-optical associative memory. The images to be recalled associatively are stored in a LiNbO3 crystal via angular multiplexing. Thresholding of the reconstructed reference beams during associative readout is achieved by using a saturable absorber with an intensity-tunable threshold. We demonstrate associative readout and error correction for 10 strongly overlapping black-and-white images. Associative recall and full reconstruction is performed when only 1/500 of the image stored is entered.

Paper Details

Date Published: 1 July 1995
PDF: 5 pages
Opt. Eng. 34(7) doi: 10.1117/12.204796
Published in: Optical Engineering Volume 34, Issue 7
Show Author Affiliations
Markus Duelli, Swiss Federal Institute of Technology (Switzerland)
Roger S. Cudney, CICESE (Mexico)
Claudia Keller, Swiss Federal Institute of Technology (Switzerland)
Peter Guenter, Swiss Federal Institute of Technology Zuerich (Switzerland)

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