Singularities of the Poynting vector azimuth in heterogeneously polarized vector fields

It was shown that C -points are associated with the singularities of the azimuth of the transversal component of the averaged the Poynting vector. It is established that Poynting singularity shifts relatively C -point position in depending of relation between amplitude and phase gradients and absolute values of amplitudes associated with orthogonally polarized field components. The mean magnitude of such shift is defined by the level of polarization homogeneity of a field. The dynamic of Poynting singularities and polarization ones changes is considered The results of the computer simulation and experimental results are presented.