Scattering from an abruptly terminated dielectric-slab waveguide

Scattering of surface waves from an abruptly terminated dielectric-slab waveguide is investigated analytically, by means of an integral equation appropriate for the boundary-value problem of TE modes. In order to obtain a tractable solution to the equation, a Neumann Series iterative procedure is applied. Numerical results are given in several cases of abruptly ended dielectric slabs. Particular attention is directed to the behavior of electric and magnetic fields at the plane of discontinuity, since field distributions at any other region depend directly on these surface values.