Modal perspective on geometric parametric instability sidebands in graded-index multimode fibers

被引：7
|
作者：
He, Weitao
Dai, Jianan
Ma, Qichang
Luo, Aiping
Hong, Weiyi [1 ]
机构：
[1] South China Normal Univ, Guangzhou Key Lab Special Fiber Photon Devices &, Guangzhou 510006, Peoples R China
来源：
OPTICS EXPRESS | 2021年 / 29卷 / 07期
基金：
中国国家自然科学基金;
关键词：
PULSE-PROPAGATION; SOLITON; BEAMS;
D O I：
10.1364/OE.422667
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
In this paper, we investigated the geometric parametric instability (GPI) in gradedindex multimode fibers through the multimode generalized nonlinear Schrodinger equation. Our results clearly and intuitively indicate that the generations of GPI sidebands are nearly synchronous in the spectrums of all modes, and the shapes of these spectrums are nearly the same. The numerical results show that the energies of the GPI sidebands come from the pump sideband, and these sidebands are carried by similar spatial beam profiles due to the similar modal components. We also found that the large modal dispersion has an influence for the symmetry of these GPI sidebands. (C) 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
引用
收藏
页码：11353 / 11360
页数：8
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