Estimating optical transmission system penalties induced by polarization mode dispersion (PMD)

摘要

Polarization mode dispersion (PMD) induced system penalty epsilon is determined from optical characteristics of an optical wavelength division multiplexed (WDM) signal that is carried on a network. The method involves tapping the optical WDM signal, separating an optical channel from the tapped optical WDM signal, performing a frequency-resolved state of polarization (SOP) measurement on the channel, and computing the PMD-induced system penalty as epsilon=AL²+BL⁴, in which A and B are predetermined parameters and L is an SOP string length based on the SOP measurement.