Acousto-optic device and fabrication method of acousto-optic...

Details Acousto-optic device and fabrication method of acousto-optic... Acousto-optic device and fabrication method of acousto-optic...

2007-05-15

2007-05-15

Sanghavi, Hemang (Department: 2874)

Optical waveguides

Directional optical modulation within an optical waveguide

C385S007000, C385S011000, C385S014000

Reexamination Certificate

active

10945923

ABSTRACT:
An acousto-optic device is disclosed which can achieve both of suppression of secular change and prevention of device damage and can maintain a stabilized wavelength selection filtering operation. The acousto-optic device includes a substrate on which a SAW guide for guiding a surface acoustic wave and an optical waveguide for guiding an optical wave are provided. A pyro-electricity coping conductive wiring pattern is provided in a region of the substrate other than the SAW guide and neutralizes polarization charge generated on a surface of the substrate.

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patent: 6720845 (2004-04-01), Takahashi et al.
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patent: 2004/0245891 (2004-12-01), Kawachi et al.
patent: 8-54589 (1996-02-01), None
patent: 2002-542511 (2002-12-01), None

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