Simulation of polarization mode dispersion in optical waveguide

Simulation of polarization mode dispersion in optical waveguide in supposition, that sections of optical fiber with determinate of orientation of a core ellipticity have an identical length is described in the work. Also orientation of ellipticity of core cross-section on each section and value its of ellipticity remain stationary values. At calculations it was supposed, that the orientation of ellipse axes of core cross-section of each consequent section of a fiber is determined according to the random law in relation to orientation of axes of the previous section. The signal propagating in optical waveguide represented as a linearly polarized light wave. Since real fibres cannot be perfectly circular and can undergo local stresses; consequently, the propagating linearly polarized light wave is split into two local polarization modes propagating at different velocities. The difference of group velocities is determined by difference of numerical values of ellipse axes and is a cause of a polarization mode dispersion.