US 11,057,146 B2
Virtualized sections for sectional control of optical links
Choudhury A. Al Sayeed, Stittsville (CA); and Mark Hinds, Ottawa (CA)
Assigned to Ciena Corporation, Hanover, MD (US)
Filed by Ciena Corporation, Hanover, MD (US)
Filed on Oct. 24, 2019, as Appl. No. 16/662,221.
Application 16/662,221 is a continuation of application No. 15/719,741, filed on Sep. 29, 2017, granted, now 10,941,324.
Prior Publication US 2020/0059315 A1, Feb. 20, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 10/079 (2013.01); H04J 14/02 (2006.01)
CPC H04J 14/0287 (2013.01) [H04J 14/0201 (2013.01); H04B 10/07955 (2013.01); H04J 2203/006 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A non-transitory computer-readable storage medium having computer readable code stored thereon for programming a device to perform steps of:
obtaining and storing a first power spectral density snapshot of an optical link, from an optical spectrum monitor and when the optical link is in a non-fault condition;
responsive to detection of a fault on at least one channel traversing the optical link based on a received notification, obtaining a second power spectral density snapshot at a receiving end of the optical link;
analyzing the first power spectral density snapshot and the second power spectral density snapshot via cross-correlation: and
determining the fault is on the optical link based on the analyzing;
wherein the optical link is a foreign-controlled link.