Mathematical modeling of the diffraction on the heterogeneity in the waveguide with the application of the hybrid finite elements

The application of the hybrid finite-element method to the solution of the vector diffraction problem of the normal mode on the heterogeneity in the waveguide was considered in the article; the algorithm of numerical computation of this problem by the finite-element method with the application of the mixed type elements was built and incarnated; the partial radiation conditions were used for the domain constraint.