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:
Feb. 08, 2011
Filed:
Dec. 08, 2006
Ralph Leppla, Darmstadt, DE;
Malte Schneiders, Darmstadt, DE;
Sascha Vorbeck, Griesheim, DE;
Werner Weiershausen, Eppertshausen, DE;
Frank Rumpf, Darmstadt, DE;
Matthias Gunkel, Darmstadt, DE;
Ralph Leppla, Darmstadt, DE;
Malte Schneiders, Darmstadt, DE;
Sascha Vorbeck, Griesheim, DE;
Werner Weiershausen, Eppertshausen, DE;
Frank Rumpf, Darmstadt, DE;
Matthias Gunkel, Darmstadt, DE;
Deutsche Telekom AG, Bonn, DE;
Abstract
A method for detecting and locating faults in an optical transmission path, and to an optical transmission system having such a functionality, is provided. By measuring the temporal change in the state of polarization SOP, external influences on a glass fiber cable of a long-haul transmission system, e.g., a WDM transmission system, may be detected. Such fault(s) may be localized with the aid of the relative arrival time of the polarization signal at both sides of a bidirectional transmission system.