Interactions of the second-order solitons with an external probe pulse in the optical event horizon  

作　　者：Jifang Rong Yiwu Ma Meng Xu Hua Yang 荣继芳;马亿旿;徐蒙;杨华(College of Computer Science and Electronic Engineering,Hunan University,Changsha 410082,China;School of Geosciences and Info-Physics,Central South University,Changsha 410083,China)

机构地区：[1]College of Computer Science and Electronic Engineering,Hunan University,Changsha 410082,China [2]School of Geosciences and Info-Physics,Central South University,Changsha 410083,China

出　　处：《Chinese Optics Letters》2022年第11期43-48,共6页中国光学快报（英文版）

基　　金：supported by the National Key Research and Development Program of China(No.2018YFB0704000);the Open Fund of the State Key Laboratory of Integrated Optoelectronics(No.IOSKL2020KF20);the National Natural Science Foundation of China(No.61275137)。

摘　　要：We demonstrate manipulating the interactions of a second-order soliton with a weak probe pulse under the condition of group velocity match and group velocity mismatch(GVMM).During these interactions,the second-order soliton acting as an effective periodic refractive-index barrier leads to the polychromatic scattering of the probe pulse,which is represented as unequally spaced narrow-band sources with adjustable spectral width.In the case of GVMM,almost all the spectral components of the narrow-band sources meet the nonlinear frequency conversion relationship by using the wavenumbermatching relationship due to the robustness of the second-order soliton under moderate high-order-dispersion perturbations,so this case is more conducive to the study of the soliton wells.In addition,different transmission states of a soliton well are demonstrated under different probe pulse properties in the fiber-optical analog of the event horizon.When the power of the probe pulse is strong enough,a dispersive wave can be generated from the collision of two fundamental solitons split from the two second-order solitons.These interesting phenomena investigated in this work as a combination of white-and black-hole horizons can be considered as promising candidates for frequency conversion and broadband supercontinuum generation.

关 键 词：second-order soliton well probe wave optical event horizon. 

分 类 号：O437[机械工程—光学工程]