Effect of Gaussian references on cross-talk noise reduction in volume holographic memory

We propose and analyze a novel recording and reading scheme for cross-talk noise reduction in volume holographic data storage. Each hologram is recorded with a slightly focused Gaussian reference beam and can be read out by use of the same Gaussian reference. The waist of the reference Gaussian profile can be adjusted based on the required signal-noise ratio and the storage density. Simulation results show the reduced cross-talk noise yielded by the proposed scheme.