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. 10, 2012
Filed:
Dec. 29, 2009
Prasad Yalamanchili, Santa Clara, CA (US);
Xiangdong Qiu, Cupertino, CA (US);
Reddy Raju, Fremont, CA (US);
Jihua Du, Santa Clara, CA (US);
Prasad Yalamanchili, Santa Clara, CA (US);
Xiangdong Qiu, Cupertino, CA (US);
Reddy Raju, Fremont, CA (US);
Jihua Du, Santa Clara, CA (US);
Other;
Abstract
A molded ceramic or glass ferrule has at least one longitudinal passage, which enables an optical fiber feed through, sealed into a metal housing with glass solder. The metal material in the housing has a slightly higher coefficient of thermal expansion (CTE) than the ferrule material and the sealing glass so that hermetic seal is maintained by a compression stress applied to the ferrule and sealing glass by the housing at operating conditions. When the housing has to be fabricated from a low CTE material, e.g. metal or ceramic, a metal sleeve and stress relief bracket is used to apply the compression stress.