Monitored power pre-checking scheme for optical amplification management in lightpath reconfigurable IP-over-CWDM networks

A monitored power pre-checking scheme has been proposed and implemented for the effective amplification management during lightpath reconfigurations in IP-over-CWDM networks with ROADMs. The pre-checking performance was examined in an experimental IP-over-CWDM network by reconfiguring lightpaths. As a result, the pre-checking function worked properly, and the lightpaths were reconfigured successfully even for a longer lightpath than the allowable distance, including the amplification management performance. The pre-checking function provides an effective management performance to judge which lightpaths should be amplified, before the reconfiguration.