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:
May. 16, 2023
Filed:
Jun. 28, 2021
Applicant:
Exfo Inc., Quebec, CA;
Inventors:
Assignee:
EXFO Inc., Quebec, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01M 11/00 (2006.01); H04B 10/071 (2013.01);
U.S. Cl.
CPC ...
G01M 11/3145 (2013.01); G01M 11/3127 (2013.01); H04B 10/071 (2013.01); G06F 2218/16 (2023.01);
Abstract
There are provided methods and systems that enable the use of the backscattering pattern produced by an optical fiber in an OTDR trace as a signature (also referred to herein as the 'RBS fingerprint') to recognize an optical fiber. It was found that it may be difficult to obtain repeatable signatures as those are sensitive to the wavelength of the OTDR laser source and the temperature of the fiber. OTDR methods and systems that are adapted to compare the backscattering pattern in a more repeatable manner are therefore provided. Once the repeatability issue is overcome, such signature can be used for identification purposes and enable new applications.