Cnoidal waves and their soliton limits in single mode fiber lasers

作     者：XIAO HU TUPEI CHEN SEONGWOO YOO DINGYUAN TANG XIAO HU;TUPEI CHEN;SEONGWOO YOO;DINGYUAN TANG

作者机构：Julong CollegeShenzhen Technology UniversityShenzhen 518118China School of Electrical and Electronic EngineeringNanyang Technological UniversitySingapore 639798Singapore 

出 版 物：《Photonics Research》 (光子学研究（英文版）)

年 卷 期：2024年第12卷第3期

页      面：543-551页

核心收录：

学科分类：08[工学] 0803[工学-光学工程] 0702[理学-物理学] 

基　　金：Natural Science Foundation of Top Talent of SZTU(GDRC202302) Department of Education of Guangdong Province(2022ZDJS116) Singapore Ministry of Education(RG114/21) Agency for Science Technology and Research Singapore(IRG M21K2c0109)。 

主　　题：fiber pump mode 

摘      要：Cnoidal waves are a type of nonlinear periodic wave solutions of the nonlinear dynamic equations.They are well known in fluid dynamics,but it is not the case in optics.In this paper we show both experimentally and numerically that cnoidal waves could be formed in a fiber laser either in the net normal or net anomalous cavity dispersion regime,especially because,as the pump power is increased,the formed cnoidal waves could eventually evolve into a train of bright(in the net anomalous cavity dispersion regime)or dark(in the net normal cavity dispersion regime)solitons.Numerical simulations of the laser operation based on the extended nonlinear Schrödinger equation(NLSE)have well reproduced the experimental observations.The result not only explains why solitons can still be formed in a fiber laser even without mode locking but also suggests a new effective way of automatic stable periodic pulse train generation in lasers with a nonlinear cavity.