Storage of multiple holograms of equal diffraction efficiency in a phase-code multiplexing system |
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Authors: | Kim You-Hyun Sohn Seung-Dae Lee Yeon H |
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Affiliation: | School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyongkido, 440-746, South Korea. |
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Abstract: | Computer simulations of 8-, 32-, and 128-bit phase-code multiplexing systems are presented, and exposure schedules are obtained numerically for equal diffraction efficiency. An analytic prediction of the exposure schedule is derived as a double exponential function that can be applied to the three different systems for variation of diffraction efficiency of less than +/- 13.5%. Eight holograms were experimentally recorded in a BaTiO3 crystal according to our exposure schedule and also to conventional schedules, which had originally been derived for an angle-multiplexing system. It is shown that the experimental data agree well with the computer simulations. |
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