Patent ID: 6215568
Filing Date: 2001-04-10
Classification: H04J

Abstract:
A wavelength-division multiplex switching network comprising:input wavelength-division multiplex demultiplexers, each of the demultiplexers dividing an incoming optical signal from an associated input fiber in accordance with wavelengths;output wavelength-division multiplex multiplexers combining signals of different wavelengths supplied thereto;a space switch connected to the demultiplexers and to the multiplexers;adjustable wavelength converters which are located between the space switch and the multiplexers and convert a respective incoming wavelength to a respective outgoing wavelength;wavelength-individual space switching matrices, which, at an input end, are each connected via a number (p), corresponding to the number of wavelength-division multiplex multiplexers, of link lines are connected to corresponding outputs of the space switch, lead to the wavelength-division multiplex multiplexers, some of the link lines leading to a respective space switching matrix directly connect the space switch to the respective space switching matrix; anda respective adjustable wavelength converter, which is one of said adjustable wavelength converters, which converts a respective incoming wavelength to a respective outgoing wavelength, located in each of the remaining link lines.