Digital Subcarrier Multiplexed Hybrid QAM for Data-rate Flexibility and ROADM Filtering Tolerance

Authors:
  • AKA. M. J. Koonen
    A. M. J. Koonen

Abstract
Novel digital subcarrier multiplexed (SCM) hybrid QAM scheme is proposed, demonstrating flexibility in data-rate and tolerance to optical filtering effects. SCM hybrid 150Gb/s signals show ~60% reach improvement in cascaded 37.5GHz ROADM filtering scenario.