Two-dimensional simulation of holographic data storage medium for multiplexed recording.
In this paper, we propose a new analysis model for photopolymer recording processes that calculate the two-dimensional refractive index distribution of multiplexed holograms. For the simulation of the photopolymer medium, time evolution of monomer diffusion and polymerization need to be calculated simultaneously. The distribution of the refractive index inside the medium is induced by these processes. By evaluating the refractive index pattern on each layer, the diffraction beams from the multiplexed hologram can be read out by beam propagation method (BPM). This is the first paper to determine the diffraction beam from a multiplexed hologram in a simulated photopolymer medium process. We analyze the time response of the multiplexed hologram recording processes in the photopolymer, and estimate the degradation of diffraction efficiency with multiplexed recording. This work can greatly contribute to understanding the process of hologram recording.
Tera Bytes Memory Development Department, Sony Corporation, 5-1-12 Kitashinagawa, Shinagawa-ku, Tokyo 141-0001, Japan. Mitsuru.Toishi@jp.sony.com
Mitsuru
M
Toishi
Takahiro
T
Takeda
Kenji
K
Tanaka
Tomiji
T
Tanaka
Atsushi
A
Fukumoto
Kenjiro
K
Watanabe