Plane Wave Diffraction by Finite-Element Mlti-Layered Strip Grating

This paper deals with plane wave diffraction problem where electromagnetic fields have continuous space spectrum. The operator method is good adjusted to such problems and allows obtaining results in wide ranges of parameters variations. The main moment of operator method using is the solution of mentioned above key problem - the interaction of plane wave spectrum with unity layer boundary problem. This problem has been solved with the discrete singularities method. The spectral function of scattered field in any point can be obtained to any desired degree of precision.