Optical splitter/coupler and optical communication system

Details Optical splitter/coupler and optical communication system Optical splitter/coupler and optical communication system

2007-06-01

2008-11-11

Healy, Brian M (Department: 2883)

Optical waveguides

Directional optical modulation within an optical waveguide

Electro-optic

C385S011000, C385S014000, C385S027000, C385S028000, C385S040000, C385S042000, C385S045000, C385S130000, C385S131000, C385S132000

Reexamination Certificate

active

07450788

ABSTRACT:
An optical splitter/coupler has: a multimode waveguide having an electrooptic effect, and propagating light in a multimode; one incident waveguide propagating light in a single mode, and inputting the light to the multimode waveguide; one pair of emitting waveguides guiding-out, in a single mode, lights which have propagated-in through the multimode waveguide; at least one pair of individual electrodes provided so as to be positioned in vicinities of respective side edges on one surface of the multimode waveguide; and a ground electrode provided on another surface, wherein the multimode waveguide has a length such that 3(n+1) bright spots arise at a central portion and at both side edge portions due to incident light, the individual electrodes are provided at positions corresponding to an upstream-most one pair of the bright spots, and the emitting waveguides are connected to positions corresponding to a downstream-most one pair of the bright spots.

REFERENCES:
patent: 6266464 (2001-07-01), Day et al.
patent: 6374013 (2002-04-01), Whiteaway et al.
patent: 6421478 (2002-07-01), Paiam
patent: 6436613 (2002-08-01), Fallahi et al.
patent: 7330614 (2008-02-01), Mossberg et al.
patent: 7403678 (2008-07-01), Thapliya et al.
patent: 2004-279637 (2004-10-01), None

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