Optical modulator

Details Optical modulator Optical modulator

2007-01-16

2008-11-04

Font, Frank G (Department: 2883)

Optical waveguides

Directional optical modulation within an optical waveguide

Electro-optic

C385S003000, C385S004000, C385S008000, C385S039000, C385S040000, C385S045000

Reexamination Certificate

active

07447389

ABSTRACT:
An optical modulator includes a signal electrode for application of modulation signals whereby light propagated over an optical waveguide is modulated, and bias electrodes for application of a bias voltage for controlling an operating point for the modulation signals. A buffer layer is provided between a substrate exhibiting electro-optical effect and the bias electrodes, but at regions where no optical waveguide is formed beneath the bias electrodes, no buffer layer is provided, and the bias electrodes are provided directly upon the substrate. This configuration enables bias voltage to be reduced.

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