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Publication
Optical Data Storage 1998
Conference paper
Equalization For High Density Volume Holographic Storage
Abstract
Digital volume holographic storage architectures and techniques are being actively researched since they can provide high data rates and storage densities [1-2]. One of the many factors affecting storage density in the medium is cross-talk [3]. Typically, several stacks of multiplexed holograms are recorded in the storage medium. In order to eliminate inter-page cross-talk between adjacent stacks during read-back, an optical aperture is used. A smaller aperture permits one to closely pack hologram stacks and thereby achieve a higher density. However, in doing so, it introduces inter-symbol interference (ISI) through optical diffraction. The density versus ISI trade-off leads to an optimum aperture size, as we will show.