Investigation of performance-enhanced ROADMs for N-WDM superchannels carrying high-order QAM

摘要

Adding a ring-resonator-assisted MZI for preprocessing improves the selectivity of ROADMs, enabling cascades of ROADMs to process N-WDM superchannels. We experimentally investigate the N-WDM superchannels performance with high-order QAM after filtered by cascaded enhanced ROADMs.