Light control device

Details Light control device Light control device

2011-01-18

2011-01-18

Peace, Rhonda S (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S001000, C385S040000

Reexamination Certificate

active

07873244

ABSTRACT:
To provide a light control device which is possible to realize a velocity matching between a microwave and an optical wave or an impedance matching of microwaves even through a signal oath having a high impedance of 70Ω or more, and is possible to reduce a driving voltage. The light control device having an electro-optical effect includes a thin plate1having a thickness of 10 μm or less, an optical waveguide2formed in the thin plate, and a controlling electrode from controlling light which passes through the optical waveguide, wherein the controlling electrode includes a first electrode and a second electrode which are disposed so as to interpose the thin plate, wherein the first electrode has a coplanar type electrode which includes at least a signal electrode4and a grounding electrode5(51), wherein the second electrode includes at least a grounding electrode54and is configured so as to apply an electric field to the optical waveguide in cooperation with the signal electrode of the first electrode, and wherein the signal electrode of the first electrode includes a branched signal path in which at least one signal path is branched into two or more in the middle of the path.

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