title: Content-addressable data storage by use of volume holograms.
abstract: 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.
authors.affiliation: IBM Almaden Research Center, 650 Harry Road, San Jose, California 95120, USA. burr@almaden.ibm.com
authors.forename: G W
authors.initials: GW
authors.lastname: Burr
authors.forename: S
authors.initials: S
authors.lastname: Kobras
authors.forename: H
authors.initials: H
authors.lastname: Hanssen
authors.forename: H
authors.initials: H
authors.lastname: Coufal