BPM-Matlab: an open-source optical propagation simulation tool in MATLAB

Abstract

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Spectral Shaping in a Multimode Fiber by All-fiber Modulation

“…To find the field at the output of the fiber, we calculate the transmission matrix (TM) of each segment and propagate the input field by multiplying it by the TM's of all the segments. To calculate the TM of the curved segments, we use "BPM-matlab" [39], an open source optical propagation simulation in MATLAB, which implements a finite difference beam propagation method for monochromatic light. We first compute the TM of the 44 curved segments to be used in the simulation, by propagating each guided mode of the fiber and projecting the output field on the guided mode basis.…”