In Polarization Division Multiplexing（PDM） systems

two beams of polarized mutually orthogonal light can be disturbed in transmission owing to polarization mode dispersion

polarization coupling and other factors

resulting in crosstalk.In this case

the Independent Component Analysis（ICA） algorithm based on minimized mutual information is applied to the separation of the mixed output signals of the system.The simulation results indicate that the original signals can be effectively separated without any priori information.