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:
Feb. 17, 2015
Filed:
Oct. 15, 2009
David Boertjes, Nepean, CA;
Kim B. Roberts, Nepean, CA;
Maurice O'sullivan, Ottawa, CA;
Giuseppe Bordogna, Ottawa, CA;
David Boertjes, Nepean, CA;
Kim B. Roberts, Nepean, CA;
Maurice O'Sullivan, Ottawa, CA;
Giuseppe Bordogna, Ottawa, CA;
Ciena Corporation, Hanover, MD (US);
Abstract
In an Optical Add-Drop Multiplexer, a drop section comprises a Wavelength Selective Switch (WSS) having at least one drop-port, the WSS being operative to couple a respective set of w (where w>1) wavelength channels from a received Wavelength Division Multiplexed (WDM) signal to each drop port. A respective 1:s power splitter is associated with each drop port. Each power splitter supplies the respective set of channels received from its drop port to each one of a corresponding set of coherent receivers. Each coherent receiver operates to receive a selected one of the respective set of channels.