A novel compact holographic crossbar architecture based on planar optics is presented. It consists of a pair of identical planar holographie elements, a two-dimensional array (N × N) transmission mask, a one-dimensional array (N) of input light sources, and a one-dimensional array (N) of detectors. Each planar element contains two cylindrical holographic lenses, both of which are recorded on a single glass substrate. The design of the overall compact configuration is presented along with experimental results. #1997 Optical Society of America
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