Polarization mode dispersion monitoring in the presence of XPM effect for high speed WDM communication systems

WDM optical systems and nonlinear effects are experiencing last years a huge investigation for performance evaluation. In this paper, and for high speed phase modulated WDM Nyquist systems, a novel method of PMD and first-order PMD (DGD) monitoring using cross phase modulation effect is presented. This technique demonstrate that in the presence of XPM effect, the states of polarization changes and the group-velocity mismatch operates effectively to evaluate the performance of the proposed method. The results are extended to show the output power variation when the number of WDM channels increase for a giving DGD values.