Necessary conditions for the propagation of two modes, Lp01 and Lp11, in a step-index optical fiber with a Kerr nonlinearity

Necessary conditions for the propagation of two modes, Lp01 and Lp11, in a step-index optical fiber with a Kerr nonlinearity

Автор: Burdin Vladimir, Bourdine Anton, Gubareva Olga

Журнал: Компьютерная оптика @computer-optics

Рубрика: Дифракционная оптика, оптические технологии

Статья в выпуске: 4 т.44, 2020 года.

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This paper presents the results of an analysis of the necessary propagation conditions in a step-index optical fiber with a Kerr nonlinearity of two modes, LP01 and LP11 , during the transmission of high-power optical pulses. All results were obtained by solving a system of two nonlinear equations for these modes, obtained by the Gauss approximation method, and the subsequent use of a procedure for refining estimates using the mixed finite elements method. The necessary conditions are determined, estimates of the boundaries for the range of normalised frequencies for which they are fulfilled are obtained, and an approximate formula is proposed for estimating the upper limit of this range.

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Optical fiber, refractive index profile, step-index optical fiber, equivalent mode spot radius, kerr nonlinearity, propagation constant, gauss approximation, system of nonlinear equations

Короткий адрес: https://sciup.org/140250019

IDR: 140250019   |   DOI: 10.18287/2412-6179-CO-699

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