G - Physics – 02 – F
Patent
G - Physics
02
F
345/60
G02F 1/00 (2006.01) G02F 1/313 (2006.01) H04J 14/06 (2006.01) G02F 1/01 (2006.01)
Patent
CA 1244546
- 13 - ELECTROOPTIC DEVICES Abstract An electrooptic polarization multiplexer/demultiplexer incorporates an electrooptic, directional coupler switch structure. The multiplexer/demultiplexer includes a substrate of birefringent, electrooptic material, a pair of phase matched, dielectric waveguides embedded in the substrate and spaced closely together over a distance L (the coupler or device length), a buffer layer of insulating material positioned over the substrate and the pair of waveguides, and a plurality of metallic electrodes positioned on the buffer layer in the vicinity of the waveguides. Electrodes are arranged in a multi-section, reversed .DELTA..beta. configuration. The distance L is selected such that 1?L/1TE?2 and L/1TM?0.5, where 1TE and 1TM are transfer lengths for the TE and TM modes, respectively.
481476
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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