Effects of Polarization-Mode Dispersion on Fiber Communication Systems

摘要

On PMD (polarization mode dispersion) effects in long-distance fiber communication systems: (2 papers, 1 conference proceedings article). We have analytically derived the Fokker-Planck equation for the probability distribution of the polarization-mode-dispersion (PMD) vector at any distance in randomly- birefringent fiber communication systems. We then solved this (3 + 1)- dimensional Fokker-Planck equation with singular initial conditions numerically and obtained the probability distribution of the PMD vector at arbitrary distances once for all. This probability-distribution function is critical for assessing the random-birefringence-induced penalties to long-distance optical communication systems. On vector-soliton collisions and interactions in birefringent fibers: (7 papers, 1 conference proceedings article). We have studied vector-soliton collisions in polarization-maintaining birefringent fibers both analytically and numerically. Mathematically, this collision is governed by the non-integrable coupled nonlinear Schroedinger equations. We have found that vector-soliton collisions in polarization-maintaining fibers have a fractal structure, i.e, this collision depends on the initial velocities very sensitively.