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Description - FFT Beam Propagation Method
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