Observation of square- and h-shaped pulse from a mode-locked erbium-doped fiber laser

被引：7
|
作者：
Xu, Zhen [1 ]
Jia, Dongfang [1 ]
Wang, Zhaoying [1 ]
Ge, Chunfeng [1 ]
Yang, Tianxin [1 ]
机构：
[1] Tianjin Univ, Coll Precis Instrument & Optoelect Engn, Lab Fiber Opt & Opt Commun, Tianjin 300072, Peoples R China
来源：
APPLIED OPTICS | 2021年 / 60卷 / 13期
基金：
中国国家自然科学基金;
关键词：
DISSIPATIVE SOLITON RESONANCE; GENERATION; LINEWIDTH; SINGLE;
D O I：
10.1364/AO.423380
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We demonstrate the generation of a type of square-shaped pulse in a passively mode-locked erbium-doped fiber laser based on the nonlinear optical loop mirror technique. Through adjusting the pump power and polarization state, square-shaped pulses are generated. Furthermore, we investigate the pulse profile in relation to the optical spectrum. By filtering out short-wavelength spectrum components gradually, pulse shaping is achieved, and the top of the square-shaped pulse becomes flat. Subsequently, by filtering out long-wavelength spectrum components, a type of h-shaped pulse is obtained and the formation reason is also investigated. (C) 2021 Optical Society of America.
引用
收藏
页码：3591 / 3595
页数：5
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