FFT Beam Propagation Method

Version 1.3.0.0 (10.9 KB) by Edgar Guevara

Implementation of the FFT BPM in different optical waveguides and free space

4.2

(13)

11.4K Downloads

Updated 17 Sep 2013

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The zip file includes the next programs:

BPM_free_space.m - Propagation of a gaussian pulse in free space

BPM_triangle.m - Propagation of a gaussian pulse in a triangle index profile waveguide

BPM_2step.m - Demonstration of the evanescent waves phenomenon in parallel rectangular waveguides

BPM_Y_Branch.m - FFT-BPM in a Y-branch coupler

BPM_mach_zender.m - FFT-BPM simulation of a mach-zender optical switch

REFERENCE:
K. Okamoto, Fundamentals of Optical Waveguides (Academic, 2000).ISBN-13: 978-0125250955

Cite As

Edgar Guevara (2026). FFT Beam Propagation Method (https://ch.mathworks.com/matlabcentral/fileexchange/14795-fft-beam-propagation-method), MATLAB Central File Exchange. Retrieved January 17, 2026.

MATLAB Release Compatibility

Created with R13

Compatible with any release

Platform Compatibility

Windows macOS Linux

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Acknowledgements

Inspired by: Waveguide Mode Solver, Finite Difference Beam Propagation Method, Finite Differences Beam Propagation Method in 3-D

Inspired: Finite Differences Beam Propagation Method in 3-D, Finite Difference Beam Propagation Method

Version	Published	Release Notes
1.3.0.0	17 Sep 2013	Added reference to the description	Download
1.0.0.0	30 Apr 2007	2007/04/29 - ortographic mistakes, screenshot with a poor resolution	Download