High speed optical switch and time division optical...

Details High speed optical switch and time division optical... High speed optical switch and time division optical...

H - Electricity

04

J

363/1.9

H04J 3/02 (2006.01) G02B 6/35 (2006.01) G02F 1/35 (2006.01) H04J 14/08 (2006.01) H04Q 3/52 (2006.01)

Patent

CA 1187217

A HIGH SPEED OPTICAL SWITCH AND TIME DIVISION OPTICAL DEMULTIPLEXER Abstract The present invention relates to a high speed optical switch and the use of such switches to form a time division demultiplexer. The optical switch comprises a length of linear material including an outer surface on a portion of which is formed a layer of nonlinear material to form a nonlinear interface at the boundary of the two materials. An input data light beam is propagated in the linear material with a predetermined intensity and angle of incidence on the nonlinear interface to, by itself, cause total reflection of the input beam. A control light beam is also selectively energized and directed at the nonlinear interface with an intensity and angle of incidence to cause a portion of the input data beam to be formed into a self- focused channel or beam propagating in the nonlinear material. The self-focused beam can then be detected at an edge of the nonlinear material.

423071

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