Necessary conditions for the propagation of two modes, LP01 and LP11, in a step-index optical fiber with a Kerr nonlinearity

被引：5
|
作者：
Burdin, V. A. [1 ]
Bourdine, A., V [1 ]
Gubareva, O. Yu [1 ]
机构：
[1] Povolzhskiy State Univ Telecommun & Informat, Moskovskoye Shosse 77, Samara 443090, Russia
来源：
COMPUTER OPTICS | 2020年 / 44卷 / 04期
关键词：
optical fiber; refractive index profile; step-index optical fiber; equivalent mode spot radius; Kerr nonlinearity; propagation constant; Gauss approximation; system of nonlinear equations; REFRACTIVE-INDEX; SILICA; LASER;
D O I：
10.18287/2412-6179-CO-699
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
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 non-linear 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.
引用
收藏
页码：533 / 539
页数：7
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