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:
Jun. 22, 2010
Filed:
Sep. 15, 2004
Jim O. Goodwin, Lucas, TX (US);
Larry H. Steinhorst, Plano, TX (US);
Wilson K. Chan, Richardson, TX (US);
Jim O. Goodwin, Lucas, TX (US);
Larry H. Steinhorst, Plano, TX (US);
Wilson K. Chan, Richardson, TX (US);
Fujitsu Limited, Kawasaki, JP;
Abstract
A method for monitoring an optical network includes communicating optical traffic along a working path of an optical network. The optical network comprises a protection path for the optical traffic to communicate the optical traffic upon a failure in the working path. The protection path comprises two or more network elements coupled together by optical lines. The method also includes monitoring an idle signal of the protection path to detect an error in the protection path comprising an error in a component of one or more of the network elements.