Dario Setti

A Statistical Treatment of Cross-Polarization Modulation in DWDM Systems

Starting from a model of random nonlinear polarization rotations for the effect of cross-polarization modulation in DWDM systems, we derive the mean distribution of the time-dependent polarization states at an arbitrary location within an optical link. We show that this distribution is fully parameterized by the degree of polarization of the particular wavelength channel, and we derive expressions to approximate this parameter for general optical links consisting of multiple optically amplified and dispersion-compensated spans, as well as related power thresholds. From the analytical expressions we derive a method to significantly reduce the detrimental effects.

Cross-Polarization Modulation in Polarization-Division Multiplex Transmission

We show theoretically and with the aid of computer simulations that the nonlinear depolarization induced by cross-polarization modulation leads to crosstalk between the polarization-division multiplex (PolDM) subchannels during their demultiplexing. This additive crosstalk can be approximated as additive Gaussian noise, and we derive expressions to estimate its variance. It can lead to significant penalties of up to several decibels for PolDM transmission and must be properly accounted for. We also show why time-interleaving both subchannels can significantly reduce these penalties.

PMD rules for physical constraint-based routing in all optical networks

PMD rules are developed from transmission modeling, enabling a fast and accurate estimate of the PMD penalty with and without mitigation, which are well suited for the physical constraint-based routing computation

Cross-polarization modulation in DWDM systems

A statistical assessment of the nonlinear cross-polarization modulation is presented. The resulting distribution of the states of polarization is derived while accounting for various properties of the link.

Analysis of Cross-Polarization Modulation in Dispersion-Managed DWDM Systems

The impact of cross-polarization modulation in 10 Gb/s, 40 Gb/s, and mixed multi-span DWDM systems is compared using analytical methods which are based on a stochastic description of nonlinear polarization rotations.

Impairments in polarization-multiplexed DWDM channels due to cross-polarization modulation

We derive the statistics of cross-polarization modulation-induced nonlinear crosstalk in polarization-multiplexed DWDM channels and an approximate relation between the degree of polarization and the associated noise terms.