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:
Sep. 10, 2013
Filed:
Aug. 25, 2008
Chienliu Chang, Kawasaki, JP;
Kenichi Nagae, Yokohama, JP;
Chienliu Chang, Kawasaki, JP;
Kenichi Nagae, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An acoustic-wave sensor () is constructed by a membrane () adapted to be displaced by an acoustic wave, a first waveguide () for transmitting light therein, an optical coupling part () to which the light transmitted through the first waveguide () is adapted to be optically coupled, and a second waveguide () through which the light coupled from the optical coupling part () transmits. When the membrane () is displaced by its reception of the acoustic wave, at least one of an optical coupling coefficient between the first waveguide () and the optical resonator () and an optical coupling coefficient between the second waveguide () and the optical resonator () is changed to output a corresponding optical signal.