Balancing the tasks between optical and electrical signal processing in Metro Networks

The given job is devoted to the analysis of current optical transport technologies in Metro networks, including current challenges and network development trends. Reconfigurable Optical Add/Drop Multiplexer (ROADM) based pure optical signal processing as well as its advantages and limitations are reviewed. Along with the solution of the key problems at the optical layer and maturity of corresponding technologies, the OTN will play a more and more important role in optical Metro networks, which will help eliminate ROADM shortcomings and can balance the Optical and Electrical signal processing features and will bring new values while network deployment.

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