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. 06, 2009
Filed:
Jun. 29, 2001
Alan F. Graves, Kanata, CA;
Ian M. Cunningham, Burnstown, CA;
Ryan Stark, Ottawa, CA;
Kent E. Felske, Kanata, CA;
Chris Hobbs, Ottawa, CA;
John H. Watkins, Ottawa, CA;
Alan F. Graves, Kanata, CA;
Ian M. Cunningham, Burnstown, CA;
Ryan Stark, Ottawa, CA;
Kent E. Felske, Kanata, CA;
Chris Hobbs, Ottawa, CA;
John H. Watkins, Ottawa, CA;
Nortel Networks Limited, Montreal, Quebec, CA;
Abstract
A communications network for a metropolitan area is disclosed. The network is comprised of three basic types of nodes: an access multiplexer, a photonic switch, and a core node. The access multiplexer provides multiplexing of data packets from end-users onto at least one sparse wavelength division multiplexed (SWDM) wavelength. The SWDM wavelengths are carried over fiber cable to the photonic switches, which consolidate these wavelengths into dense wavelength division multiplexed (DWDM) wavelengths for transmission to the core node. The core nodes include a photonic switch (PSX) and a service-aware terabit router core for routing packets within the metropolitan area via the network or out to a long haul network. The photonic switches and core nodes are capable of switching at the wavelength, group of wavelength, and fiber levels.