Real-time revealing of Cherenkov radiation evolution in optical fibers

被引:3
|
作者
Zhang, Mengjie [1 ]
Wang, Wenchao [1 ]
Xian, Tianhao [1 ]
Zhan, Li [1 ]
机构
[1] Shanghai Jiao Tong Univ, Sch Phys & Astron, State Key Lab Adv Opt Commun Syst & Networks, Shanghai 200240, Peoples R China
基金
中国国家自然科学基金;
关键词
GENERATION; SUPERCONTINUUM; SOLITONS; FISSION; LIGHT;
D O I
10.1364/OL.494574
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The generation of Cherenkov radiation (CR) is determined by the phase-matching condition, but the experimental observation on the phase change of its transient process is still incomplete. In this paper, we use the dispersive temporal interferometer (DTI) technique to real-time reveal the buildup and evolution of CR. Experiments show that when the pump power varies, the phase-matching conditions also change, which is mainly affected by the nonlinear phase shift caused by the Kerr effect. Further simulation results propose that both pulse power and pre-chirp management have a significant impact on phase-matching. The CR wavelength can be shortened and the generation position can be moved forward by adding a suitable positive chirp or increasing the incident peak power. Our work directly reveals the evolution of CR in optical fibers and provides a method for optimizing it. (c) 2023 Optica Publishing Group
引用
收藏
页码:3343 / 3346
页数:4
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