Waveguide optical modulator

Details Waveguide optical modulator Waveguide optical modulator

2005-12-27

2005-12-27

Lee, John D. (Department: 2874)

Optical waveguides

Temporal optical modulation within an optical waveguide

Electro-optic

C385S003000, C385S040000

Reexamination Certificate

active

06980706

ABSTRACT:
A waveguide optical modulator has a first Y-branch optical waveguide providing an input port, a second Y-branch optical waveguide providing an output port, first and second optical waveguides interconnecting the first and second Y-branch optical waveguides, first and second signal electrodes disposed respectively on the first and second optical waveguides, and a ground electrode having a potential difference with the first and second signal electrodes and operable in coaction with the first and second signal electrodes for applying an electric field to the first and second optical waveguides. The ground electrode includes a central ground electrode disposed between the first and second optical waveguides, the central ground electrode having an opening defined therein. With this arrangement, since the central ground electrode disposed between the first and second optical waveguides has the opening, a waveguide substrate as a microwave resonance chamber has increased characteristics for effectively suppressing a dip in the frequency vs. response characteristics.

REFERENCES:
patent: 6192167 (2001-02-01), Kissa et al.
patent: 6393166 (2002-05-01), Burns
patent: 02-196212 (1990-08-01), None
patent: 03-184014 (1991-08-01), None
patent: 05-142504 (1993-06-01), None
patent: 05-210072 (1993-08-01), None
patent: 07-261135 (1995-10-01), None

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