Analysis of photopolymer media of holographic data storage using non-local polymerization driven diffusion model

In this paper, we propose a new model taking account of polymer reaction length and a dark reaction, and we develop a simulator using the finite-difference time-domain (FDTD) method. To consider the polymer reaction length, we revise the non-local polymerization-driven diffusion (NPPD) model by considering the dark reaction and the multiple hologram process. We analyze some physical parameters of the photopolymer medium for data storage, such as the polymer reaction length, the diffusion coefficient, and the refractive indices of the binder, polymer, and monomer. We also estimate the important physical parameters of the photopolymer medium by fitting the experimental results using a least square approximation with non-linear parameters.