title: Robust holographic storage system design.
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.
authors: Shizuoka University 3-5-1 Johoku, Hamamatsu, Shizuoka 432-8561, Japan.
authors: Takahiro
authors: T
authors: Watanabe
authors: Minoru
authors: M
authors: Watanabe
mesh_terms: D016248:Computer Storage Devices; D004867:Equipment Design; D019544:Equipment Failure Analysis; D006696:Holography / Q000295:instrumentation*; D016247:Information Storage and Retrieval / Q000379:methods*; D007834:Lasers; D012031:Refractometry / Q000295:instrumentation*