US 12,278,662 B2
Systems and methods for identifying fiber link failures in an optical network
Paraskevas Bakopoulos, Attiki (GR); Konstantinos Tokas, Athens (GR); Ioannis (Giannis) Patronas, Piraeus (GR); Nikolaos Argyris, Zografou (GR); Dimitrios Syrivelis, Volos (GR); Dimitrios Kalavrouziotis, Papagos (GR); Elad Mentovich, Tel Aviv (IL); Eitan Zahavi, Zichron Yaakov (IL); Louis Bennie Capps, Jr., Georgetown, TX (US); Prethvi Ramesh Kashinkunti, Chicago, IL (US); and Julie Irene Marcelle Bernauer, Palo Alto, CA (US)
Assigned to Mellanox Technologies, Ltd., Yokneam (IL)
Filed by Mellanox Technologies, Ltd., Yokneam (IL)
Filed on Aug. 26, 2022, as Appl. No. 17/896,877.
Claims priority of application No. 0220100605 (GR), filed on Jul. 26, 2022.
Prior Publication US 2024/0039627 A1, Feb. 1, 2024
Int. Cl. H04B 10/071 (2013.01); H04B 10/073 (2013.01); H04B 10/077 (2013.01); H04B 10/079 (2013.01)
CPC H04B 10/073 (2013.01) [H04B 10/071 (2013.01); H04B 10/0771 (2013.01); H04B 10/0773 (2013.01); H04B 10/0791 (2013.01)] 22 Claims
OG exemplary drawing
 
1. A system for identifying one or more fiber link failures in an optical network, the system comprising:
an optical switch in communication with one or more network devices via an optical network, wherein the optical network comprises a plurality of fiber links;
a first optical time-domain reflectometer;
a second optical time-domain reflectometer; and
a controller in communication with the optical switch, the first optical time-domain reflectometer, and the second optical time-domain reflectometer, wherein the controller is configured to:
receive an indication of a failure in the optical network;
determine, in response to receipt of the indication and based on a network map, a fiber link of the plurality of fiber links in which the failure occurred; and
reconfigure, in response to the receipt of the indication, the optical switch to (i) allow communication between the first optical time-domain reflectometer and an input port of the determined fiber link and (ii) allow communication between the second optical time-domain reflectometer and an output port of the determined fiber link; and
test the determined fiber link using the first optical time-domain reflectometer and the second optical time-domain reflectometer.