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. 22, 2005
Filed:
Sep. 27, 2001
Paul David Obeda, Nepean, CA;
Robert Michael Bierman, Nepean, CA;
Cuong Tu Dang, Ottawa, CA;
David Edward Nelles, Nepean, CA;
Udo Mircea Neustadter, Carp, CA;
Paul David Obeda, Nepean, CA;
Robert Michael Bierman, Nepean, CA;
Cuong Tu Dang, Ottawa, CA;
David Edward Nelles, Nepean, CA;
Udo Mircea Neustadter, Carp, CA;
Tropic Networks Inc., Kanata, CA;
Abstract
In an optical WDM network, each optical channel is modulated with a respective channel identity. Detectors, conveniently at multiplex ports of optical band filters, detect the channel identities of all of the optical channels in an optical signal at the respective points to produce respective channel lists. A network management system determines channel lists for through ports of the optical band filters, identifies matching pairs of channel lists to determine a topology of each node and to identify optical paths entering or leaving each node, and identifies matching pairs of channel lists for these paths to determine an inter-node topology of the network. The channel identity detector points can alternatively be at the optical paths entering or leaving each node.