正色散光纤激光器中矩形耗散孤子与高斯光谱脉冲的切换锁模（英文）  

Switchable Mode Locking of Rectangular Dissipative Soliton and Gaussian-spectrum Pulse in Normal Dispersion Fiber Laser

作　　者：李静玲[1] 韩冬冬(指导) 惠战强[1] 任凯利 罗文峰[1] 姚英 赵峰[1] 忻向军 巩稼民[1] LI Jing-ling;HAN Dong-dong;HUI Zhan-qiang;REN Kai-li;LUO Wen-feng;YAO Ying;ZHAO Feng;XIN Xiang-jun;GONG Jia-min(Xi′an University of Posts and Telecommunications,Xi′an 710072,China;Beijing University of Posts and Telecommunications,Beijing 100876,China)

机构地区：[1]西安邮电大学,西安710072 [2]北京邮电大学,北京100876

出　　处：《光子学报》2019年第5期146-152,共7页Acta Photonica Sinica

基　　金：The National Natural Science Foundation of China(Nos.61805198,61875165,61775180,61875164)

摘　　要：基于单壁碳纳米管与非线性偏振旋转技术在锁模光纤激光器中仿真和实验观测到矩形耗散孤子与高斯光谱脉冲的切换锁模.矩形耗散孤子的光谱与脉冲宽度分别为~6.33ps和~12.54nm,具有非常强的啁啾.适当地调节偏振控制器,可以获得具有高斯型光谱和脉冲的锁模状态,其光谱和脉冲宽度分别为~1.87ps和~2.2nm.高斯型光谱脉冲的时间带宽积为0.51,几乎没有啁啾.不同锁模状态间的切换归因于偏振控制器导致的腔内偏振的改变.A switchable operation of rectangular dissipative soliton and Gaussian-spectrum pulse has been investigated experimentally in the mode-locked fiber laser using single-walled carbon nanotube and nonlinear polarization rotation technique.The rectangular dissipative soliton is strong chirped with the temporal and spectral width of^6.33 ps and^12.54 nm,respectively.By appropriately adjusting the polarization states,the Gaussian-spectrum state with^1.87 ps duration and^2.2 nm bandwidth is achieved.The time-bandwidth product of the Gaussian-spectrum pulse is 0.51,suggesting that the pulse is nearly chirp-free.The switching of different operations could be ascribed to the change of cavity polarizations relying on polarization controllers,which is also demonstrated by the simulation results.

关 键 词：光纤激光器 耗散孤子 开关锁模 脉冲 色散 啁啾 

分 类 号：TN242[电子电信—物理电子学]