Content-addressable data storage by use of volume holograms.
Data stored as volume holograms--optical interference patterns imprinted into a photosensitive storage material--can be accessed both by address and by content. An optical correlation-based search compares each input query against all stored records simultaneously, a massively parallel but inherently noisy analog process. With data encoding and signal postprocessing we demonstrate a holographic content-addressable data-storage system that searches digital data with high search fidelity.
Burr
G W
GW
IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA. burr@almaden.ibm.com
Kobras
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Hanssen
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Coufal
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