This BeamLab demo calculates the field distributions and effective refractive indices of the eigenmodes of a rib waveguide.
BeamLab demo script: rib_modes.m
The following figures show the three field components of the first 4 low-order modes. The white lines indicate the substrate-core and core-cladding boundaries.
BeamLab is an award-winning set of simulation tools for beam propagation through optical devices and waveguides in your familiar MATLAB® environment. It offers a high flexibility in waveguide design and post-processing of any output data.