Optical waveguides – Temporal optical modulation within an optical waveguide – Electro-optic
Reexamination Certificate
2008-07-18
2009-08-25
Font, Frank G (Department: 2883)
Optical waveguides
Temporal optical modulation within an optical waveguide
Electro-optic
C385S009000, C385S014000, C385S041000, C385S045000, C385S132000
Reexamination Certificate
active
07580594
ABSTRACT:
An optical modulation element includes a waveguide defined based on a defect in a photonic crystal, a carrier conducting region for conducting a carrier to the waveguide, an electrode for injecting a carrier into the carrier conducting region, and a current control unit for controlling the quantity of carrier to be conducted to the waveguide, wherein the photonic crystal and the electrode are made of a material containing TiO2as a main composition, and wherein the current control unit functions to change the refractive index of a medium constituting the waveguide in accordance with the quantity of carrier conducted to the waveguide, thereby to modulate the light propagated through the waveguide.
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Canon Kabushiki Kaisha
Font Frank G
Mooney Michael P
Rossi Kimms & McDowell LLP
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