Intermediate Holographic Data Storage System by Using Sequentially Superimposed Recording

We introduce a holographic data storage system for intermediating between small data sets and mass holographic data recording. It employs a holographic sequentially superimposed recording technique. We discuss a time scheduling technique for making uniform reconstruction of sequentially recorded holograms and we show experimental results. We also discuss the Bragg selectivity of sequentially recorded holograms. The maximum storage density of our system is estimated to be 224kbit/mm2. Our system is useful as an intermediate recording system before recording mass holographic data in a larger system.

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