Patent ID: 6476945
Filing Date: 2002-11-05
Classification: H04J

Abstract:
In a D/WDM ring with n add/drop nodes connected over a forward and a reverse fiber, a method of allocating a wavelength between each pair of nodes for obtaining a fully meshed network, comprising:determining an add/drop requirement Na for all nodes of said ring, a fiber requirement Nf for each span of said ring and the minimum number N of wavelengths/span; preparing a hop table with all nodes nj and all wavelengths &lgr;i for said ring and selecting an origin for said hop table by defining a node of origin and a first wavelength; if Na&lE;Nf, generating an initial hop vector comprising a set of n initial forward hop values, and determining an initial hop sequence from said initial node, using a subset of said initial hop values; generating all hops for all nodes and all wavelengths using said initial hop values and recording all said hop values in said hop table; and equipping each node with wavelength-specific receivers and transmitters according to a source-destination table prepared from said hop table.