Hong, John and Psaltis, Demetri (1986) Storage capacity of holographic associative memories. Optics Letters, 11 (12). pp. 812-814. ISSN 0146-9592 http://resolver.caltech.edu/CaltechAUTHORS:HONol86
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The storage capacity of holographic associative memories is estimated. An argument based on the available degrees of freedom shows that the number of patterns that can be stored is limited by the space-bandwidth product of the hologram divided by the number of pixels in each pattern. A statistical calculation shows that if we attempt to store associations by multiply exposing the hologram, the cross talk among the stored items severely degrades the output fidelity. This confirms the storage capacity predicted by the degrees-of-freedom argument.
|Additional Information:||© 1986 Optical Society of America. Received June 13, 1986; accepted September 4, 1986. The authors thank Y.S. Abu-Mostafa, E. Paek, C.H. Park, and F. Mok for many helpful discussions. The research is supported by the Defense Advanced Research Projects Agency and the U.S. Army Research Office. The research of J. Hong was supported in part by a fellowship from Caltech's Program in Advanced Technologies, supported by Aerojet General, General Motors, GTE, and TRW.|
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