title: Analytical modeling of XPM in dispersion-managed coherent fiber-optic systems.
abstract: An analytical model for the cross-phase modulation (XPM) variance in dispersion-managed coherent fiber-optic systems is developed based on the first order perturbation theory. The XPM variance is analytically calculated for arbitrary pulse shapes. For a non-Gaussian pulse, the summation of time-shifted Gaussian pulses is used to fit the target pulse shape, which not only provides a good approximation of the non-Gaussian pulse but also allows explicit derivation of the XPM variance. The analytically estimated XPM variance is found to be in good agreement with numerical simulations.
authors.forename: Xiaojun
authors.initials: X
authors.lastname: Liang
authors.forename: Shiva
authors.initials: S
authors.lastname: Kumar