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.

Date of Patent:
Jan. 12, 2021

Filed:

Jan. 29, 2018
Applicant:

British Telecommunications Public Limited Company, London, GB;

Inventor:

Neil Parkin, London, GB;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/07 (2013.01); H04B 10/079 (2013.01); H04Q 11/00 (2006.01);
U.S. Cl.
CPC ...
H04B 10/0791 (2013.01); H04B 10/0793 (2013.01); H04Q 11/0066 (2013.01); H04B 10/07 (2013.01); H04Q 2011/0083 (2013.01);
Abstract

An optical network including a processing device configured to receive from photodetectors, information indicative of a time period between loss of light received through a first optical fiber and loss of light received through a second optical fiber. The first optical fiber has a first latency and the second optical fiber has a second latency. The first optical fiber and the second optical fiber extend along a common path through the optical network: a first end of the path being defined by the photodetectors and a second end of the path being defined by a second location in the optical network. The processor is configured to calculate, based on the timing information and a difference in latency between the first optical fiber and the second optical fiber, a distance along the common path from the photodetectors to an event resulting in the losses of light.


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