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:
Oct. 22, 2019
Filed:
Jan. 26, 2018
Ciena Corporation, Hanover, MD (US);
Paul Chedore, Ottawa, CA;
Jean-Luc Archambault, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
An optical add/drop system supporting a colorless, directionless, and contentionless (CDC) architecture includes a Contentionless Wavelength Selective Switch (CWSS)-based optical add/drop device including N local add/drop ports and M degree ports; and a channel pre-combiner including a common port connected to a first port of the N local add/drop ports and at least two local add/drop ports coupled to the common port. The CWSS-based optical add/drop device can include an M-array of 1×N Wavelength Selective Switches (WSSs) and an N-array of M×1 switches. The channel pre-combiner can be a passive device which passively combines the at least two local add ports and splits the at least two local drop ports. The channel pre-combiner can also include amplifiers on the common port in both an add direction and a drop direction.