The influence of refractive index profile on supercontinuum beams self-cleaning in graded index multimode fiber

被引：0
|
作者：
Dai, Jianan
Zhu, Xiran
Zhang, Bin
Hou, Jing [1 ]
机构：
[1] Natl Univ Def Technol, Coll Adv Interdisciplinary Studies, Changsha, Peoples R China
来源：
OPTICS AND LASER TECHNOLOGY | 2024年 / 171卷
关键词：
Graded-index multimode fiber; Index-profile parameters; Beam self-cleaning; Supercontinuum (SC) generation; PULSE-PROPAGATION; MODE; INSTABILITY; GENERATION; DYNAMICS;
D O I：
10.1016/j.optlastec.2023.110454
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We propose a theoretical scheme to improve the fundamental mode energy proportion of the supercontinuum (SC) generation in graded-index multimode fiber (GRIN-MMF). With this scheme, we conduct numerical investigations into the influence of various core refractive index profile parameters on beam-self cleaning of fundamental mode, establishing an optimal parameter range (alpha = 2.0 2.06). Within this range, the energy proportion of the fundamental mode gradually increases from 32% to 65% as the propagation distance. Additionally, our simulation provides the initial demonstration that the supercontinuum (SC) broadening is correlated with the distribution of core refractive indices within the graded-index multimode fiber.
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页数：6
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