Patent ID: 7751714
Filing Date: 2010-07-06
Classification: H04J,H04Q

Abstract:
1. A switchless wavelength cross-connect system comprising: N Reconfigurable Optical Add Drop Multiplexers (ROADM) each having N DROP ports and N ADD ports wherein the DROP ports are arranged into N groups of DROP ports, wherein each one of the N groups includes a DROP port from each of the N ROADM; N combiners each optically connected to a respective one of the N groups of DROP ports, each one of the N combiners having N outputs; N demultiplexers, each one of which being optically connected to the N outputs of an individual one of the N combiners, each of the N demultiplexers having N outputs; and N transponders, each one of which being optically connected to the N outputs of one of the N demultiplexers.