The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 13, 2006
Filed:
Oct. 01, 2004
Yukito Tsunoda, Kawasaki, JP;
Hiroshi Miyata, Kawasaki, JP;
Yukito Tsunoda, Kawasaki, JP;
Hiroshi Miyata, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
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.