FFT Beam Propagation Method

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

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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://uk.mathworks.com/matlabcentral/fileexchange/14795-fft-beam-propagation-method), MATLAB Central File Exchange. Retrieved .

General Information

MATLAB Release Compatibility

  • Compatible with any release

Platform Compatibility

  • Windows
  • macOS
  • Linux
Version Published Release Notes Action
1.3.0.0

Added reference to the description

1.0.0.0

2007/04/29 - ortographic mistakes, screenshot with a poor resolution