FULL VECTOR ANALYSIS OF 2-DIMENSIONAL ANGLED AND COATED OPTICAL WAVE-GUIDE FACETS

We analyze the important problem of scattering from two-dimensional (2 -D) optical waveguide facets, including the effects of both antireflec tion coatings and facet angle. The facet is allowed to be angled in bo th vertical and horizontal planes, necessitating a fully vectorial app roach to model correctly the polarization coupling that occurs, To ach ieve this, the highly efficient Free Space Radiation Mode method has b een extended to the general vector case, yielding novel expressions fo r both the reflectivity and the coupling coefficients which can be rap idly evaluated on a desktop PC for a wide variety of practical structu res, Results are presented for both angled, coated and coated angled f acets, Full field profiles, also available from the approach, are pres ented and provide useful design information and aids to understanding.