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:
Nov. 27, 2001
Filed:
Oct. 29, 1998
Richard Andrew Jensen, Red Bank, NJ (US);
TyCom (US) Inc., Morristown, NJ (US);
Abstract
A method is provided for locating an intermittent fault occurring in an optical transmission system that includes a plurality of repeaters extending along first and second optical transmission paths for supporting bi-directional communication. In accordance with the method, a measurement is obtained of the gain imparted to a test signal along a round trip path between its originating point and each repeater. For each repeater there are identified changes in gain beyond a prescribed threshold and the time when the gain changes occur. A record of transmission performance data occurring over time is received. The performance data may be a bit error rate, SONET overhead data, or forward error correcting metrics, for example. For each repeater, a correlation in time is established between the identified gain changes and the transmission performance data. A fault location is identified based on the established correlation.