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64-GBd PDM-256QAM and 92-GBd PDM-64QAM Signal Generation using Precise-Digital-Calibration aided by Optical-Equalization

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Abstract

We propose to precisely distribute equalization for transceiver imperfection between digital and optical domain. 1.7- and 4.6-dB OSNR tolerance improvements were confirmed for PDM-256QAM and PDM-64QAM signals with net-rates of 793 and 851 Gbps/carrier.

© 2019 The Author(s)

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