Analysis of Nonlinear Phase Noise in Dispersion Unmanaged Fiber-Optic Systems

An analytical expression for the linear and nonlinear phase noise variance in dispersion unmanaged fiber optic systems has been derived using a first-order perturbation theory. Some numerical examples have been provided to illustrate the behavior of the developed phase noise variance in terms of dispersion and distance. The results show that in dispersion unmanaged systems, nonlinear interaction between the amplified spontaneous emission and …