Simulate light through weakly guiding waveguides using the finite-differences beam propagation method on an adaptive grid.

Use pip:

pip install git+https://github.com/jw-lin/lightbeam.git

Update:

pip install --force-reinstall git+https://github.com/jw-lin/lightbeam.git

Python dependencies: numpy,scipy,matplotlib,numba,numexpr,jupyter

Check out the Python notebook in the tutorial folder for a quickstart guide. Direct link.

J. Shibayama, K. Matsubara, M. Sekiguchi, J. Yamauchi and H. Nakano, "Efficient nonuniform schemes for paraxial and wide-angle finite-difference beam propagation methods," in Journal of Lightwave Technology, vol. 17, no. 4, pp. 677-683, April 1999, doi: 10.1109/50.754799.

The Beam-Propagation Method. (2015). In Beam Propagation Method for Design of Optical Waveguide Devices (pp. 22–70). doi:10.1002/9781119083405.ch2

(I'm also working on a faster Julia version, stay tuned ...)