Patent ID: 8538260
Filing Date: 2013-09-17
Classification: H04J

Abstract:
1. A machine-implemented method of selecting a wavelength for use in transmitting optical data along an end-to-end path in an optical network, said optical network comprising a plurality of nodes interconnected by optical fiber links, said method comprising using a digital signal processor configured to effect: finding wavelengths available for use along said end-to-end path; finding wavelengths available on each link attached to each node on said end-to-end path, wherein the links include first links attached to each node and forming said end-to-end path and second links attached to each node and not forming said end-to-end path; selecting a wavelength for use (a) that is available on the first links of said end-to-end path and (b) that is more available on the second links attached to the nodes on said end-to-end path than other wavelengths, thereby considering future attempts to set up other end-to-end paths having at least one node in common with said end-to-end path.