Nortel Networks Corporation

Guoqiang G Q Wang

Delfin Y Montuno

Kent Felske

Stanislus Kisito Xavier

Abel Clement Dasylva

How Kee Au

Prasad Kodaypak

A technique for establishing automatic service connectivity in a network between multiple network elements is disclosed. Each network element utilizes routing and distribution protocols to discover its neighbors and establish a topology. Optical fibers connect the network elements. Each optical fiber carries multiple wavelengths of signals, wherein the network elements communicate with a server. The method comprises: storing information pertaining to each of the network elements at the server; registering network elements by collecting information about each network element; receiving a connectivity request from a first registered node for connection with a second registered node; determining compatibility of the first and second registered node; and instructing network elements upon verifying compatibility to search for an end-to-end wavelength path and establish a connection between the first registered node and the second registered node.

Distributed photonic switch and optical UNI server

A technique for selectively frequency translating optical channels in an optical network is disclosed. In one exemplary embodiment, the technique is realized as a method for selectively frequency translating optical channels in a system having W optical frequencies. The method comprises selectively directing an optical channel operating at a respective one of the W optical frequencies based at least in part upon the respective optical frequency of the optical channel. The method also comprises shifting the respective optical frequency of the selectively directed optical channel by an amount defined by &plusmn;2 &Dgr;f, wherein &Dgr;f is an optical frequency spacing between adjacent optical channels, and i&equals;0, 1, . . . log W&minus;1.

Technique for selectively frequency translating optical channels in an optical network

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Ottawa, Canada

Guoqiang G Q Wang