Acousto-optic device

Details Acousto-optic device Acousto-optic device

2006-06-13

2006-06-13

Song, Sarah (Department: 2874)

Optical waveguides

Directional optical modulation within an optical waveguide

Acousto-optic

C358S003050

Reexamination Certificate

active

07062109

ABSTRACT:
The present invention relates to an acousto-optic device capable of improving the interaction efficiency for suppressing the driving power needed for SAW generation. The acousto-optic device according to the present invention a substrate showing an acousto-optic effect, first and second optical waveguides formed on the substrate to be substantially parallel with each other for propagating light, a transducer formed on the substrate for producing a surface acoustic wave to be propagated in a propagation direction along directions of the first and second optical waveguides, and a surface acoustic wave distribution structure for distributing an intensity of the surface acoustic wave from the transducer in a direction perpendicular to the propagation direction on the substrate so that maximum values develop at two points corresponding to positions of the first and second optical waveguides.

REFERENCES:
patent: 5218653 (1993-06-01), Johnson et al.
patent: 6400881 (2002-06-01), Seino et al.
patent: 6697543 (2004-02-01), Miyata et al.

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