Optical interconnect arrangement

Details Optical interconnect arrangement Optical interconnect arrangement

H - Electricity

04

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344/52, 345/56

H04Q 3/52 (2006.01) G02B 6/28 (2006.01) G02F 1/035 (2006.01) G02F 3/00 (2006.01) G06E 3/00 (2006.01) H03K 17/78 (2006.01) H04Q 11/00 (2006.01)

Patent

CA 2015480

AN OPTICAL INTERCONNECT ARRANGEMENT Abstract An arrangement for butt coupling of waveguide electrooptic plates to form a crossbar switch. The arrangement includes a stack of M splitter plates, each of which routes an injected optical signal to one of N outputs, and a stack of Ncombiner plates, each of which routes the signal of a selected one of M inputs to a common output. The stack of splitter plates is rotated with respect to the stack of combiner plates and the output signal ports of the splitter plates are coupled to the input signal ports of the combiner plates, so that each output of an splitter plate is connected to a different combiner plate. Within each splitter plate there is a fan-out network of waveguide electrooptic couplers and each coupler, under electric control, routes signals from one input to either one of two outputs. With j levels of such interconnected couplers 2j output are developed. The combiner plates have an identical architecture but with a signal flow in the reverse direction. Butt coupling of the splitter and combiner plates is achieved by employing splitter and combiner plates of a different crystal cut, by interposing polarization rotation means between the two stacks, or by including polarization rotation means within the splitter plates, the combiner plates, or both.

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