An open-source mixed Nedelec-Lagrange FEM mode solver for dielectric waveguides is implemented in MATLAB and Python and validated against COMSOL with relative errors below 0.05%.
Practical vectorial mode solver for dielectric waveguides based on finite differences
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And Yet Another FEM-Based Mode Solver for Dielectric Waveguides
An open-source mixed Nedelec-Lagrange FEM mode solver for dielectric waveguides is implemented in MATLAB and Python and validated against COMSOL with relative errors below 0.05%.