US 11,870,488 B2
Fast fiber transient locating systems and methods
Choudhury A. Al Sayeed, Stittsville (CA); and Lorenzo Lepore, Montreal (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Feb. 25, 2022, as Appl. No. 17/680,593.
Prior Publication US 2023/0275656 A1, Aug. 31, 2023
Int. Cl. H04B 10/07 (2013.01); H04B 10/071 (2013.01); H04B 10/079 (2013.01); G01M 11/00 (2006.01)
CPC H04B 10/071 (2013.01) [H04B 10/0791 (2013.01); G01M 11/3109 (2013.01); H04B 10/07 (2013.01); H04B 10/079 (2013.01); H04B 10/07955 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising steps of:
detecting a fast fiber transient on a span based on analyzing power data, wherein the power data corresponds to at least one of optical wavelengths of traffic channels, optical service channel (OSC) wavelengths, and telemetry from a network element,
determining a specific configuration of an optical time domain reflectometer (OTDR) based on the detected fast fiber transient, wherein the fast fiber transient is an event on the span that lasts in a range of seconds and which causes errors on optical services without causing a line failure, and wherein the specific configuration includes settings related to one or more of acquisition time and pulse width of the OTDR based on the detected fast fiber transient and fiber distance such that an OTDR trace completes before an expected end of the fast fiber transient;
responsive to detecting the fast fiber transient and configuring the OTDR with the specific configuration, causing execution of the OTDR to perform the OTDR trace on the span with the specific configuration; and
determining a location of the fast fiber transient based on the OTDR trace.