Mode excitation and supercontinuum generation in a few-mode suspended-core fiber

被引：38
|
作者：
Shavrin, Igor [1 ]
Novotny, Steffen [1 ]
Ludvigsen, Hanne [1 ]
机构：
[1] Aalto Univ, Fiber Opt Grp, Dept Micro & Nanosci, FI-00076 Aalto, Finland
来源：
OPTICS EXPRESS | 2013年 / 21卷 / 26期
基金：
芬兰科学院;
关键词：
HIGHER-ORDER MODE; MICROSTRUCTURED OPTICAL-FIBER; PHOTONIC CRYSTAL FIBERS; DISPERSION; PROPAGATION;
D O I：
10.1364/OE.21.032141
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We have studied the excitation of higher-order modes and their role in supercontinuum generation in a three-hole silica suspended-core fiber, both experimentally and numerically. We find that pump coupling optimized to highest transmission can yield substantial excitation of higher order modes. With up to about 40% of the pump power coupled to higher order modes, we have studied supercontinuum generation in this fiber. In agreement with experiments, simulation results based on the multimode generalized nonlinear Schrodinger equation confirm that the spectral width is determined by spectral broadening in the fundamental mode, whereas the numerical analysis reveals that intermodal nonlinear interactions are strongly suppressed. (C) 2013 Optical Society of America
引用
收藏
页码：32141 / 32150
页数：10
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