Qimeng Lin 1,2,3Li Yan 1,2,3Yuanqi Song 1,2,3Xuzhuo Jia 1,2,3[ ... ]Jintao Bai 1,2,3,**
Author Affiliations
Abstract
1 State Key Laboratory of Energy Photon-technology in Western China, Shaanxi Engineering Technology Research Center for Solid State Lasers and Application, Northwest University, Xi’an 710069, China
2 International Collaborative Center on Photoelectric Technology and Nano Functional Materials, Provincial Key Laboratory of Photo-electronic Technology, Northwest University, Xi’an 710069, China
3 Institute of Photonics & Photon-technology, Northwest University, Xi’an 710069, China
In this Letter, we demonstrated the switchable single- and dual-wavelength femtosecond soliton generation in single-mode Er-doped fiber lasers with the usage of carboxyl-functionalized graphene oxide (GO-COOH) saturable absorbers (SAs) for the first time, to the best of our knowledge. The fiber laser generated a stable single-wavelength conventional soliton at 1560.1 nm with a pulse duration of 548.1 fs. The dual-wavelength solitons centered at 1531.9 nm and 1555.2 nm with a spacing of approximately 23 nm can be obtained by adjusting the pump power of the cavity. Our experimental results indicated the GO-COOH has great potential to be used in ultrafast fiber lasers as broadband SAs.
fiber laser mode-locking dual-wavelength femtosecond soliton Chinese Optics Letters
2021, 19(11): 111405
北京邮电大学 电子工程学院 光通信与光波技术教育部重点实验室，北京100876
分析了高非线性光子晶体光纤(HNL-PCF)中拉曼孤子自频移(SSFS)的原理。讨论了HNL-PCF中SSFS效应在波长变换、飞秒孤子脉冲、超快数模转换和改善通信的稳定性等方面的应用。随着PCF技术的发展和对SSFS研究的深入，基于PCF中SSFS的各种器件将在未来的光纤通信系统中发挥重要的作用。
孤子自频移 光子晶体光纤 波长变换 飞秒孤子脉冲 soliton self-frequency shift photonic crystal fiber wavelength conversion femtosecond soliton pulse
燕山大学 电气工程学院，河北 秦皇岛 066004
以Maxwell电磁场理论为基础，在综合考虑了高阶色散、高阶非线性、自相位调制、交叉相位调制、自变陡、脉冲内喇曼散射及偏振模色散等因素的基础上，推导了飞秒孤子脉冲在双折射光纤中传输的耦合非线性薛定谔方程，并利用分步傅里叶方法对该方程进行了数值计算，研究分析了偏振模色散对飞秒孤子传输的影响。结果发现：当Dp≤0．1 ps／km1／2时，偏振模色散对系统的影响很小，随着偏振模色散值的增大，系统的传输性能迅速恶化，当偏振模色散值达到0．3 ps／km1／2时，系统的传输距离已经不到无偏振模色散时的1／3；若同时考虑光纤的高阶效应，以飞秒孤子作为载体的系统已经不能实现高速长距离的传输。
光纤通信技术 飞秒孤子脉冲 偏振模色散(PMD) 非线性薛定谔方程(NLSE) 分步傅里叶方法 optical fiber communication technology femtosecond soliton pulse polarization mode dispersion (PMD) nonlinear Schrodinger equation (NLSE) Fourier transform method
1 中国科学院上海光学精密机械研究所,上海,201800
2 中国科学院研究生院,北京,100039
采用分步傅里叶变换作为数值模拟的方法,以二阶飞秒光孤子和基态飞秒光孤子为例,讨论了初始啁啾对光纤中传播的飞秒光孤子的时域特征和频谱结构的影响,概括出如下的结论:初始啁啾通过影响飞秒光孤子谱线的红移,而对飞秒光孤子由拉曼效应引发的脉冲延迟产生较大影响,正的初始啁啾使脉冲延迟加剧,负的初始啁啾使脉冲延迟减小.
纤维与波导光学 分步傅里叶变换 飞秒光孤子 初始啁啾 脉冲延迟 fiber and waveguide optics split-step Fourier method femtosecond soliton initial chirp soliton retardation
Institute of Optical Communication, Liaocheng Teachers College, Shandong 252059
Chinese Journal of Lasers B
1998, 7(4): 337
利用微扰理论方法推导了飞秒光孤子脉冲在具有一定带宽限制的分布放大光纤传输系统中传输时，脉冲宽度和频移的变化方程，此方程有稳态解，并得到稳定传输时，脉冲宽度及频移的解析表达式。
飞秒光孤子 分布放大 带宽限制
