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A compact dynamic crossbar switch, based on a planar optics configuration, is presented. It consists of a pair of identical planar holographic cylindrical telescopes, each recorded on a single substrate, and a two-dimensional array (8x8) ferroelectric liquid crystal spatial light modulator. The crossbar switch can direct the light from any particular source in a one-dimensional array of 8 sources to a particular detector in a one-dimensional array of 8 detectors. The design of the overall configuration is presented along with experimental results.
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Silviu Reinhorn (1999) studied this question.
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