Abstract
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.
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