Mode-interference-induced oscillation in propagation speed of fiber fuse in few-mode fibers

被引：8
|
作者：
Jiang, Shoulin [1 ]
Ma, Lin [1 ]
Wang, Shuai [1 ]
Fan, Xinyu [1 ]
He, Zuyuan [1 ]
机构：
[1] Shanghai Jiao Tong Univ, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
来源：
OPTICS LETTERS | 2018年 / 43卷 / 17期
基金：
中国国家自然科学基金;
关键词：
OPTICAL-FIBERS; DISCHARGE;
D O I：
10.1364/OL.43.004252
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We investigated the fiber fuse propagation speed in different kinds of few-mode fibers (FMFs) by combining heterodyne detection and time-frequency analysis. The periodic speed oscillation due to mode interference was observed, and we confirm that the characteristic length L-c (defined as the optical discharge propagation distance within a period of speed oscillation) is independent of the launched power, which is different from that observed in single-mode fibers. Moreover, we believe that the optical field modulation with enough intensity led to the variation of the optical discharge center position. L-c about half of the beat length in the two-mode fiber was observed accordingly. In addition, we show that pure-silica core FMFs with large effective area are desired for fiber fuse suppression in mode-division multiplexing transmission. (C) 2018 Optical Society of America
引用
收藏
页码：4252 / 4255
页数：4
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