Patent ID: 7702243
Filing Date: 2010-04-20
Classification: H04J,H04Q

Abstract:
1. Optical node comprising at least one input port, and a plurality of output ports , each output port of the optical node arranged downstream of am output port of a wavelength switch, each said wavelength switch having a plurality of input ports and operating as a controlled multiplexer for forming an output signal by combining wavelength channels selected among the optical signals received on the input ports of the wavelength switch, said optical node comprising a broadcasting unit for broadcasting on at least two wavelength switches corresponding to at least two output ports of the optical node an express traffic received on said at least one input port, characterized in that said optical node comprises at least one add unit for adding at least one signal on an output port and in that the broadcasting unit is configured for broadcasting at least one added signal from said at least one add unit on at least two wavelength switches arranged upstream of at least two output ports of the optical node.