Theoretical and Experimental Study of the Frequency Response of the Nonlinear Polarization Rotation in a Bulk Semiconductor Optical Amplifier

To characterize and predict the dynamics of the nonlinear polarization rotation in SOAs, an experimental method based on the frequency response technique and a model based on the density matrix and effective index formalisms are presented. Both determine the angular displacement, at the Poincare Sphere, that produces the evolution of the polarization of the output signal.