Improvement of Storage Capacity Using Confocal Scheme in Reflection-Type Holographic Memory System with Speckle Shift Multiplexing
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概要
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The storage capacity of a reflection-type holographic memory with three-dimensional speckle shift multiplexing embedded in a confocal scheme is presented. The confocal optical system can eliminate the interpage cross-talk noise in the speckle shift multiplexing. This leads to the increase in signal-to-noise ratio and the decrease in bit error rate. Numerical simulation results show that a maximum storage capacity can be increased up to 4.35 Tbyte/disk by using the confocal scheme. This value is derived numerically from the ideal situations of recording medium and evaluation of bit error rate in three-dimensional multiplexing.
- 2011-09-25
著者
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Nitta Kouichi
Department Of Computer And Systems Engineering Faculty Of Engineering Kobe University
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Matoba Osamu
Department Of Applied Physics Faculty Of Engineering Osaka Unviersity
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Matoba Osamu
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
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Yonetani Yusuke
Department of Systems Science, Graduate School of System Informatics, Kobe University, Kobe 657-8501, Japan
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