22 November 1999 Implementation of optical dynamic RAM using spatially distributed spectral storage
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Abstract
Optical Dynamic RAM (ODRAM) is a high capacity, low latency optical memory architecture based on persistent spectral hole burning in frequency selective materials. This paper describes the basic ODRAM architecture and progress towards realization of a high capacity, low latency, tabletop demonstration unit. In particular, a new technique, Spatially Distributed Spectral Storage (SDSS) is introduced and demonstrated to provide over two orders of magnitude improvement in spectral capacity for materials that experience excitation induced frequency shifts. Finally, the relative strengths and weaknesses of ODRAM are emphasized in a competitive analysis that includes currently available memory technologies such as semiconductor DRAM and magnetic disks.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Alan E. Johnson, Eric S. Maniloff, Thomas W. Mossberg, "Implementation of optical dynamic RAM using spatially distributed spectral storage", Proc. SPIE 3802, Advanced Optical Data Storage: Materials, Systems, and Interfaces to Computers, (22 November 1999); doi: 10.1117/12.370223; https://doi.org/10.1117/12.370223
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KEYWORDS
Data storage

Optical storage

Acousto-optics

Signal detection

Ions

Crystals

Magnetism

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