US 12,224,794 B2
Optical time-domain reflectometer (OTDR) event detection and light power level measurement-based fiber optic link certification
Benoit Morel, Lyons (FR)
Assigned to VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed by VIAVI SOLUTIONS INC., Chandler, AZ (US)
Filed on Sep. 28, 2023, as Appl. No. 18/476,617.
Application 18/476,617 is a continuation of application No. 17/520,375, filed on Nov. 5, 2021, granted, now 11,838,049.
Claims priority of application No. 20306336 (EP), filed on Nov. 5, 2020.
Prior Publication US 2024/0022323 A1, Jan. 18, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/071 (2013.01); H04B 10/079 (2013.01); H04B 10/27 (2013.01)
CPC H04B 10/071 (2013.01) [H04B 10/07955 (2013.01); H04B 10/27 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An apparatus comprising:
a power meter, executed by at least one hardware processor, to perform, at one end of a device under test (DUT) of a network, a light power level measurement;
an optical time-domain reflectometer (OTDR) event detector, executed by the at least one hardware processor, to perform, at the one end of the DUT, an OTDR measurement at a relatively short pulse width and at a relatively long pulse width to detect at least one event associated with the DUT; and
an event classifier, executed by the at least one hardware processor, to generate, based on analysis of the light power level measurement and the OTDR measurement at the relatively short pulse width and at the relatively long pulse width, an event classification to classify the at least one event associated with the DUT.