Storage of multiple holograms of equal diffraction efficiency in a phase-code multiplexing system.
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.
Kim
You-Hyun
YH
School of Information and Communication Engineering, Sungkyunkwan University, Suwon, Kyongkido, 440-746, South Korea.
Sohn
Seung-Dae
SD
Lee
Yeon H
YH