Patent ID: 7546035
Filing Date: 2009-06-09
Classification: H04B,H04J

Abstract:
1. A method for conveying management information in a WDM system from a number of wavelength converters to a central management unit, wherein a management information signal is superimposed on the individual WDM signal from the respective wavelength converter, wherein: the management information signals of the different wavelength converters are superimposed on the respective individual WDM signal in a mutually distinguishable manner; the individual WDM signals from the wavelength converters and the associated management information signals are combined and transmitted as a common optical signal on an optical transmission line; a fraction of the common optical signal is tapped off and directed to a detector, which converts the received fraction of the common optical signal into an electrical signal; the electrical signal from the detector is directed to a receiver unit, which recovers the different management information signals from the received electrical signal; and the recovered management information signals are transmitted from the receiver unit to the central management unit.