Beam propagation method (BPM) for photonic integrated circuits (PIC), implemented in MATLAB with finite-differences in 2D. Includes slab waveguide mode-solver.

Julia package for adaptive matrix exponential based on tolerance

The adaptability of Padé approximants and its error growth in comparison with the power series correspondences for target polynomials. The variation of zeroes and poles of the Padé approximants with the drawbacks of employing this algorithm investigated.