We present 40 channel WDM transmission experiments over one and two spans of 93-km field-deployed SSMF achieving net capacities of 51.5-Tbit/s and 49.2-Tbit/s for PCS-256-QAM with 7.5 bits entropy and 45.9-Tbit/s and 45.1-Tbit/s for 64-QAM transmission, respectively.

© 2020 The Author(s)

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