The shift selectivity of a reflective-type spherical reference wave volume hologram is investigated using a nonparaxial numerical modeling based on a multiple-thin-layer implementation of a volume integral equation. The method can be easily parallelized on multiple computers. According to the results, the falloff of the diffraction efficiency due to the readout shift shows neither Bragg zeros nor oscillation with our parameter set. This agrees with our earlier study of smaller and transmissive holograms. Interhologram cross talk of shift-multiplexed holograms is also modeled using the same method, together with sparse modulation block coding and correlation decoding of data. Signal-to-noise ratio and raw bit error rate values are calculated.
© 2007 Optical Society of America
Optical Data Storage
Original Manuscript: November 27, 2006
Revised Manuscript: January 31, 2007
Manuscript Accepted: February 10, 2007
Published: June 13, 2007
Balázs Gombkötő, Pál Koppa, Attila Sütő, and Emőke Lőrincz, "Computer simulation of reflective volume grating holographic data storage," J. Opt. Soc. Am. A 24, 2075-2081 (2007)