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:
Aug. 25, 2015
Filed:
Jun. 20, 2012
Yusuke Nasu, Atsugi, JP;
Ryoichi Kasahara, Atsugi, JP;
Ikuo Ogawa, Atsugi, JP;
Kenya Suzuki, Yokohama, JP;
Fumihiro Ebisawa, Yokohama, JP;
Yusuke Nasu, Atsugi, JP;
Ryoichi Kasahara, Atsugi, JP;
Ikuo Ogawa, Atsugi, JP;
Kenya Suzuki, Yokohama, JP;
Fumihiro Ebisawa, Yokohama, JP;
NIPPON TELEGRAPH AND TELEPHONE CORPORATION, Tokyo, JP;
NTT ELECTRONICS CORPORATION, Yokohama-Shi, Kanagawa, JP;
Abstract
In an integrated optical receiver or transmitter, both the displacement of an optical axis caused by thermal changes and the property degradation of an optical functional circuit are inhibited. A planar lightwave circuit having a substrate and a waveguide-type optical functional circuit formed thereon composed of a material different from that of the substrate, and includes a waveguide region formed only of an optical wavelength that is in contact with a side forming an emission-end face of the optical waveguide for propagating the light emitted from the optical functional circuit or an incident-end face of an optical waveguide for propagating the light incident on the optical functional circuit. The planar lightwave circuit is fixed to a fixing mount only at the bottom of the substrate where the waveguide region is formed.