Simulation of non-Gaussian optical pulse propagation over piece-wise regular fiber optic link with conventional laser-optimized multimode fiber operating in a few-mode regime

Abstract

This work presents results of simulation of non-Gaussian pulse propagation over fiber optic link with irregular weakly guiding silica graded-index laser-optimized multimode optical fiber (OM2+/OM3 Cat.) operating in a few-mode regime. Here recently proposed model of irregular few-mode fiber optic link been introduced in the previous works was applied, which is based on split-step method approach combined with piece-wise regular representation. Model takes into account launch conditions, differential mode delay, both lower- and higher-order mode chromatic dispersion, differential mode attenuation, mode mixing and power diffusion occurring due to real fiber irregularity and micro-/macro-bends. Parabolic and triangular as well as Gaussian and hyperbolic secant shape laser-excited optical pulse propagation over conventional silica laser-optimized multimode fibers was simulated and researched. Some results of pulse dynamics comparison analysis are represented.