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Scattering from dielectric frequency selective structures

A plane wave impinges on a laterally double-periodic inhomogeneous lossy dielectric structure. Using a wave splitting approach, and an expansion of the fields and permittivity in global and local basis functions, respectively, the scattered fields are determined via a propagator. The formulation is useful for a permittivity which varies abruptly as well as in a continuous fashion. A subdomain basis

High-frequency switching and Kerr effect - nonlinear problems solved with nonstationary time domain techniques

A time domain method building on the concept of wave splitting is used to study direct wave propagation phenomena in weakly nonlinear media. The starting point is the linear wave equation with time-dependent coefficients. This means that the studied nonlinear medium in some sense has to be approximated with a nonstationary medium which changes while the wave passes through. For the nonstationary e