Study of Non-Linear Polarization Rotation and Optical Switching in Optical Fibers

In this paper, we present both a theoretical and experimental analysis of the nonlinear polarization rotation in an optical fiber. Starting from the coupled non-linear Schr¨odinger equations an analytical solution for the evolution of the state of polarization, valid for fibers with large linear birefringence and quasi cw input light with arbitrary polarization, is given.