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. 11, 2007
Filed:
Apr. 06, 2005
Seiichi Ikeda, Kawasaki, JP;
Seimi Sasaki, Kawasaki, JP;
Seiichi Ikeda, Kawasaki, JP;
Seimi Sasaki, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical integrated device in which application of an excessive stress or the appearance of a crack due to thermal expansion mismatching is prevented. A first ferrule is fixed to an optical waveguide chip. An optical fiber is inserted into the first ferrule to fix the optical fiber. A package contains the optical waveguide chip and the first ferrule. An opening is made in a sidewall of the package to pull out the optical fiber to the outside. A pipe is airtightly fixed around the opening. A second ferrule is inserted into the pipe and is airtightly fixed to an end of the pipe. The optical fiber pulled out to the outside of the package through the opening is inserted into the second ferrule to fix the optical fiber. The optical fiber without deflection is contained in the package by making a first expansion/contraction amount created due to the thermal expansion of the package and the thermal expansion of the pipe match a second expansion/contraction amount created due to the thermal expansion of the optical fiber and the thermal expansion of the second ferrule.