Rib Waveguide Modes

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.

Mode 1

Mode 2

Mode 3

Mode 4