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.

© 1999 Optical Society of America

Reliability of content-addressable data search in a defocused volume holographic data storage system

Bhargab Das, Joby Joseph, and Kehar Singh
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Performance analysis of content-addressable search and bit-error rate characteristics of a defocused volume holographic data storage system

Bhargab Das, Joby Joseph, and Kehar Singh
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Improved data search by zero-order (dc) peak filtering in a defocused volume holographic content-addressable memory

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Photonic content-addressable memory system that uses a parallel-readout optical disk

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Multiwavelength optical content-addressable parallel processor for high-speed parallel relational database processing

Peng Yin Choo, Abram Detofsky, and Ahmed Louri
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