Optical System of a Device for Recording and Reading Large Data Amounts Based on Using Multiplex Recording of One-dimensional Holograms

A method is considered for increasing a density of data recording onto the holographic storage using the multiplex data recording in the form of computer-synthesized one-dimensional Fourier holograms and line-by-line retrieval of the data recorded on the storage. This method of recording allows the density of recording on the holographic storage to be increased because with the line-by-line data retrieval from one-dimensional holograms, the interferences from the images superimposed on each other (that were read out from the one-dimensional subholograms recorded on the selected multiplex hologram) decrease substantially. Parameters of the optical analog used during the computer synthesis of the hologram that is output to the aperture of the liquid-crystal transparency are considered. The data amount is estimated that can be recorded on a single hologram depending on parameters of the liquid-crystal transparency, on which the computer-synthesized hologram is output. An optical scheme used for re-projection of the hologram from the liquid-crystal transparency to the holographic storage with reducing its size is described and an optical scheme of the device for line-by-line retrieval of the recorded data is also presented.

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