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:
Jul. 08, 2003
Filed:
Sep. 25, 2001
Kazuhisa Kashihara, Chiyoda-ku, JP;
Kazutaka Nara, Chiyoda-ku, JP;
Tunetoshi Saito, Chiyoda-ku, JP;
Takeshi Nakajima, Chiyoda-ku, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
An optical waveguide circuit module of the invention is a highly reliable optical waveguide circuit module where cracks are not generated in an optical waveguide circuit chip housed even under a high temperature and high humidity environment. An optical waveguide circuit chip ( ) comprises a waveguide forming region ( ) formed on a substrate ( ). The waveguide forming region ( ) has a waveguide configuration sequentially connecting optical input waveguides ( ), a first slab waveguide ( ), an arrayed waveguide ( ) made of a plurality of channel waveguides ( ) arranged side by side, the channel waveguides having a different length each other, a second slab waveguide ( ), and a plurality of optical output waveguides ( ) arranged side by side.