Patent ID: 7200329
Filing Date: 2007-04-03
Classification: H04Q

Abstract:
1. An apparatus for monitoring/correcting a wavelength path in a transparent OXC (optical cross-connect) device of a wavelength-division-multiplexing optical-communication network, the apparatus comprising: a path-information-generating section for generating a path-monitoring information for a subsequent determination of each input port and each switching path of input-optical signals; a plurality of optical couplers for coupling signal outputs from a plurality of wavelength-division demultiplexers with the path-monitoring-information generated by the path-information-generating section; a plurality of optical switches for switching signal outputs from the optical couplers; a plurality of wavelength-division multiplexers for multiplexing signal outputs from the optical switches; a path-information-detecting section for detecting the path-monitoring information from signal outputs from the wavelength-division multiplexers; and, a path-control section for comparing the path-monitoring information detected by the path-information-detecting section with a predetermined optical-switching information for determining a switching error in the wavelength path.