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Through cross-polarization modulation, a consequence of the nonlinear refractive index, the polarization state of a wavelength-division multiplexed (WDM) channel is modified by the power in other channels of the WDM system. The authors use a simple model to predict the time-averaged and time-varying parts of the polarization state for subcarrier-modulated optical channels and compare it to direct...
The time-varying state of polarization of an optical channel modified by the intensity of other channels in a three-channel WDM system is measured. It compares well with theory expanded from a previously published two-channel model
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