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Opt Express. 2011 Nov 21;19(24):24147-58. doi: 10.1364/OE.19.024147.

Robust holographic storage system design.

Author information

1
Shizuoka University 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan.

Abstract

Demand is increasing daily for large data storage systems that are useful for applications in spacecraft, space satellites, and space robots, which are all exposed to radiation-rich space environment. As candidates for use in space embedded systems, holographic storage systems are promising because they can easily provided the demanded large-storage capability. Particularly, holographic storage systems, which have no rotation mechanism, are demanded because they are virtually maintenance-free. Although a holographic memory itself is an extremely robust device even in a space radiation environment, its associated lasers and drive circuit devices are vulnerable. Such vulnerabilities sometimes engendered severe problems that prevent reading of all contents of the holographic memory, which is a turn-off failure mode of a laser array. This paper therefore presents a proposal for a recovery method for the turn-off failure mode of a laser array on a holographic storage system, and describes results of an experimental demonstration.

PMID:
22109441
DOI:
10.1364/OE.19.024147
[Indexed for MEDLINE]

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