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An analytical model of XPM induced nonlinear polarization crosstalk is proposed and experimentally verified. Based on this model, various polarization crosstalk mitigation methods including coherent receiver DSP and transmission system design are reviewed.
A simplified model is proposed to facilitate cross-phase modulation (XPM) analysis in coherent PSK systems. It is verified by a 43Gb/s QPSK simulation in terms of phase noise standard deviation, autocorrelation and system performance.
Systematic investigation of XPM impact on QPSK signals reveals that higher symbol rates are advantageous for reducing both intra-span generation and multi-span accumulation of phase noise.
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