We investigate a modified split-step Fourier method (SSFM) by including low-pass filters in the linear steps. This method can simultaneously achieve a higher simulation accuracy and a slightly reduced complexity.
@article{arxiv.2001.04101,
title = {Improved Simulation Accuracy of the Split-Step Fourier Method},
author = {Shen Li and Magnus Karlsson and Erik Agrell},
journal= {arXiv preprint arXiv:2001.04101},
year = {2024}
}