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:
Dec. 25, 2007
Filed:
Nov. 30, 2005
Xiaojun Fang, Burlingame, CA (US);
Li-ping Chen, Foster City, CA (US);
Boris Faer, Belmont, CA (US);
Xiaojun Fang, Burlingame, CA (US);
Li-Ping Chen, Foster City, CA (US);
Boris Faer, Belmont, CA (US);
Sprint Communications Company L.P., Overland Park, KS (US);
Abstract
An optical fiber protection switch comprises an optical interface and an optical switching system. The optical interface exchanges optical signals with optical fibers that are deployed in a ring configuration. The optical switching system exchanges the optical signals with the optical interface. The optical switching system performs ring switching of the optical signals in the optical domain in response to a first fault. The optical switching system performs span switching of the optical signals in the optical domain in response to a second fault.