Real-time evaluation of optical nonlinear effects on 112Gbps PM-QPSK signal in dispersion managed links

We demonstrate the impact of nonlinear effects on dispersion managed links with a FPGA-based 112Gbps real-time receiver. We clarify that PM-RZ-QPSK provides superior robustness, whereas PM-NRZ-QPSK offers better total performance resulting from higher OSNR sensitivity.

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