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In this paper, a novel polarization mode dispersion (PMD) monitoring method by adding auxiliary optical signal is presented. Based on four-wave mixing (FWM), the PMD can be monitored in all-optical domain by measuring the power of the idler wave. With the help of auxiliary signal, the change trend of idler wave power with PMD will be enlarged, which expands the scope of monitoring and improves the...
We propose a first-order Polarization Mode Dispersion (PMD) monitoring technique for phase-modulated optical signals utilizing the cross-phase modulation (XPM) effect between the input signal and the inserted continuous-wave probe in parallel connection. Because of accumulation of PMD, the XPM effect in nonlinear fiber leads to variation of pump phase. This can cause spectrum broadening resulting...
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