Nonlinear Fourier transform enabled eigenvalue spectrum investigation for fiber laser radiation  

作　　者：YUTIAN WANG SONGNIAN FU JIAN KONG ANDREY KOMAROV MARIUSZ KLIMCZAK RYSZARD BUCZY'n SKI XIAHUI TANG MING TANG YUWEN QIN LUMING ZHAO 

机构地区：[1]School of Optical and Electronic Information and Wuhan National Laboratory for Optoelectronics,Huazhong University of Science and Technology,Wuhan 430074,China [2]Advanced Institute of Photonics Technology,School of Information Engineering,and Guangdong Provincial Key Laboratory of Information Photonics Technology,Guangdong University of Technology,Guangzhou 510006,China [3]Kunshan Shunke Laser Technology Co.,Ltd.,Suzhou 215347,China [4]Institute of Automation and Electrometry,Russian Academy of Sciences,Novosibirsk 630090,Russia [5]Faculty of Physics,University of Warsaw,Warsaw 02-093,Poland

出　　处：《Photonics Research》2021年第8期1531-1539,共9页光子学研究（英文版）

基　　金：National Key R&D Program of China(2018YFB1801001);Fundamental Research Funds for the Central Universities(HUST 2020kfy XJJS007);National Natural Science Foundation of China(61875061);Protocol of the 9th Session of China-Croatia Scientific and Technological Cooperation Committee(9-28);Protocol of the 38th Session of China-Poland Scientific and Technological Cooperation Committee(6);National Agency for Academic Exchange in Poland(PPN/BCN/2019/1/00068);Foundation for Polish Science First TEAM POIR(04.04.00-00-1D64/16)。

摘　　要：Fiber lasers are a paradigm of dissipative systems,which distinguish themselves from a Hamilton system where energy is conservative.Consequently,pulses generated in a fiber laser are always accompanied by the continuous wave(CW).Under certain hypothesis,pulses generated in a fiber laser can be considered as a soliton,a product of a Hamilton system.Therefore,all the descriptions of solitons of a fiber laser are approximate.Coexistence of solitons and the CW from a fiber laser prevents unveiling of real nonlinear dynamics in fiber lasers,such as soliton interactions.Pulse behavior in a fiber laser can be represented by the state of single pulse,the state of period doubling of single pulse,the states of two pulses either tightly bound or loosely distributed,the states of three pulses,and various combinations of the above-mentioned states.Recently,soliton distillation was proposed and numerically demonstrated based on the nonlinear Fourier transform(NFT)[J.Lightwave Technol.39,2542(2021)].Solitons can be separated from the coherent CW background.Therefore,it is feasible to isolate solitons from CW background in a fiber laser.Here,we applied the NFT to various pulses generated in a fiber laser,including single pulse,single pulse in period doubling,different double pulses,and multiple pulses.Furthermore,with the approach of soliton distillation,the corresponding pure solitons of those pulses are reconstructed.Simulation results suggest that the NFT can be used to identify soliton dynamics excluding CW influence in a fiber laser,which paves a new way for uncovering real soliton interaction in nonlinear systems.

关 键 词：FIBER SOLITON SOLITONS 

分 类 号：TN248[电子电信—物理电子学]