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.
Patent No.:
Date of Patent:
Nov. 18, 2025
Filed:
Feb. 24, 2023
Ciena Corporation, Hanover, MD (US);
Choudhury A. Al Sayeed, Stittsville, CA;
Edward Chen, Calgary, CA;
Robert Palmer, Nepean, CA;
Ran Tang, Kanata, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
A Reconfigurable Optical Add/Drop Multiplexer (ROADM) includes degree components where there are one or more Media Channels (MCs) configured thereon; multiplexer and demultiplexer components; and a controller configured to, responsive to a request for a loopback test on Network Media Channel (NMC) that is part of a configured Media Channel (MC), determine whether there are neighboring channels to the NMC, configure deadbands on optical spectrum based on the determining, cause configuration of a modem for the loopback test, and cause performance of the loopback test with the modem.