超连续谱
超短脉冲
多模光纤
光学
脉搏(音乐)
飞秒
光纤
模态色散
非线性系统
色散(光学)
物理
飞秒脉冲整形
带宽限制脉冲
非线性薛定谔方程
离散化
材料科学
光子晶体光纤
渐变折射率纤维
激光器
数学
数学分析
量子力学
光纤传感器
探测器
作者
Karol Tarnowski,Sylwia Majchrowska,Pierre Béjot,Bertrand Kibler
出处
期刊:Journal of The Optical Society of America B-optical Physics
[The Optical Society]
日期:2021-02-09
卷期号:38 (3): 732-732
被引量:10
摘要
We make use of two well-known numerical approaches of nonlinear pulse propagation, namely, the unidirectional pulse propagation equation and the multimode generalized nonlinear Schrödinger equation, to provide a detailed comparison of ultrashort pulse propagation and possible conical emission in the context of multimode optical fibers. We confirm the strong impact of the frequency dispersion of the nonlinear response on pulse splitting and supercontinuum dynamics in the femtosecond regime for pumping powers around the critical self-focusing threshold. Our results also confirm that the modal distribution of optical fibers provides a discretization of conical emission of the corresponding bulk medium (i.e., here fused silica). This study also provides some criteria for the use of numerical models, and it paves the way for future nonlinear experiments in commercially available optical fibers.
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