FemSIM™ is a generalized mode solver based on the Finite Element Method (FEM) that can calculate any number of transverse or cavity modes of an arbitrary structure on a non-uniform mesh. FemSIM employs a full-vector implementation and has been enhanced with many features to compute complex modes. The tool is flexible and extendable to a wide range of problems such as high-index contract, plasmonic, and photonic-bandgap-based waveguides.
Simulation mesh for aircore photonic crystal fiber
Simulation mesh for a rib waveguide with a tilted facet with a highly hybrid polarization both Ex and Ey components of the mode are shown