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Published May 10, 1990 | public
Journal Article Open

Optical memory disks in optical information processing


We describe the use of optical memory disks as elements in optical information processing architectures. The optical disk is an optical memory devicew ith a storage capacity approaching 1010b its which is naturally suited to parallel access. We discuss optical disk characteristics which are important in optical computing systems such as contrast, diffraction efficiency, and phase uniformity. We describe techniques for holographic storage on optical disks and present reconstructions of several types of computer-generated holograms. Various optical information processing architectures are described for applications such as database retrieval, neural network implementation, and image correlation. Selected systems are experimentally demonstrated.

Additional Information

© Copyright 1990 Optical Society of America Received 17 July 1989. This work is supported in part by a grant from the Army Research Office. The authors would like to thank Sony for the disk system used in this work and for the generous support of Seiji Kobayashi during his stay at California Institute of Technology. Special thanks to Adolf Lohmann for many helpful discussions regarding optical disk based computer generated holography. Thanks to Charlie Stirk for his assistance in the design and testing of our VLSI neural net chip. Alan Yamamura is supported by a fellowship from the Fanny and John Hertz Foundation.


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