Optical waveguides – Directional optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
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.
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Kikuchi Takashi
Nakamura Shigetoshi
Thapliya Roshan
Fildes & Outland, P.C.
Fuji 'Xerox Co., Ltd.
Healy Brian M
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