Patent ID: 6744984
Filing Date: 2004-06-01
Classification: H04J

Abstract:
A method for increasing channel capacity in a wavelength division multiplexing optical network for directing transmission traffic away from a congested route, the congested route having a starting node and a destination node, the method comprising the steps of:selecting at least one intermediate routing point to use in constructing an alternative route based on communication channel availability between the starting node and the intermediate routing point, and further between the intermediate routing point and the destination node, wherein the selecting occurs in response to identifying the congestion of the congested route; encoding one or more light channels between the starting node and the intermediate routing point with a first set of orthogonal codes; and encoding one or more light channels between the intermediate routing point and the destination node with a second set of orthogonal codes, wherein the alternative route has an expanded communication channel capacity due to the encoding processes.