Patent ID: 8538267
Filing Date: 2013-09-17
Classification: H04J

Abstract:
1. A method for managing signals in a wavelength-division multiplexing (WDM) network implemented in a reconfigurable optical add-drop multiplexer (ROADM) node comprising: adding a first set of signals via a first plurality of transponders within a first transponder aggregator to switch through the ROADM node such that the adding is dynamically constrained from adding signals on adjacent, pre-defined channels for simultaneous use from moment to moment; adding a second set of signals via a second plurality of transponders within a second transponder aggregator to switch through the ROADM node such that at least a portion of the second set of signals is on at least one channel that is adjacent to a channel including any of the signals in the first set of signals; assigning wavelengths to a first set of DWDM channels through the first channel transponder aggregators and a second set of DWDM channels through the second channel transponder aggregators and interleaving the aggregated wavelengths in pairs and dynamically filtering the pre-defined channels to mitigate cross-talk; and transmitting the first and second sets of signals from the ROADM node on corresponding channels.