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We demonstrate a new phase slip tolerant, multi-level coding scheme for 64QAM achieving 12.9 dB NCG with power dissipation less than 1W per 100G. Error free operation down to BER=10−15 and high slip tolerance is shown in a real-time experiment.
We compare hybrid turbo differential decoding with other FEC-schemes that reduce the penalty usually associated with differential encoding applied for cycle slip mitigation. We discuss implementation aspects and show robust FEC-performance in nonlinear transmission experiments.
We present real-time measurements of the cycle-slip probabilities of a 100G DP-QPSK transceiver using a Viterbi-and-Viterbi carrier recovery. ASE and non-linear phase noise generated Poisson distributed slip events with mean probabilities between 10−12 to 10−3.
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