Flexible Local Approximation Models for Wave Scattering in Photonic Crystal Devices

The dominant mode of a photonic crystal (PC) waveguide is computed by an eigenvalue formulation of the flexible local approximation method (FLAME). The computed mode is then incorporated into a new excitation-absorption boundary condition for use in predicting scattering in multiport PC devices. Reflection and transmission coefficients of several devices are calculated by the new method; agreement with previously published values is excellent