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Long-haul WDM transmission of PDM-8PSK and PDM-8QAM with nonlinear DSP

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Abstract

The performance improvement with digital backpropagation using PDM-8PSK and PDM-8QAM formats was experimentally assessed for 7×112Gbit/s. Transmission reach was extended by ~20% compared to 15% for an equivalent PDM-QPSK system.

© 2012 Optical Society of America

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