An optical crossbar element that uses birefringent crystal plates and programmable half-wave plates is proposed. It is compact, cascadable, and well suited for realizing an array of switching elements employed in multistage interconnection networks. Arrays of two-input/two-output and four-input/fourputput crossbar switching elements and a Clos (4, 4, 4) network are also presented.
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| http://dx.doi.org/10.1364/AO.33.000175 | DOI Listing |
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