基于光纤光栅选频的近单频输出环形腔光纤激光器设计与仿真  

Design and Simulation of Near-Single Frequency Output Ring Cavity Fiber Laser Based on Fiber Grating Frequency Selection

作　　者：果鑫 陈涛 张振鹤 张威 韩林桀 赵海龙 GUO Xin;CHEN Tao;ZHANG Zhenhe;ZHANG Wei;HAN Linjie;ZHAO Haiong(College of Computer Science,Hunan University of Technology,Zhuzhou Hunan 412007,China)

机构地区：[1]湖南工业大学计算机学院,湖南株洲412007

出　　处：《湖南工业大学学报》2024年第1期48-54,共7页Journal of Hunan University of Technology

基　　金：湖南省自然科学省市联合基金资助项目(2022JJ50067,2021JJ50049);湖南省教育厅科学研究基金资助项目(21C0405,20C0589,19C0578)。

摘　　要：近单频光纤激光在相干合成、光通信、激光测量及光谱分析等领域具有独特的优势。目前,采用环形腔光纤激光器实现近单频输出被科研工作者们广泛关注。环形腔光纤激光器中主要使用可调谐光纤光栅滤波器、可调谐带通滤波器、可调谐法布里-珀罗(F-P)滤波器以及可饱和吸收体等实现更好的近单频输出,输出激光的光谱受到滤波器带宽以及环形腔数量的影响。因此,基于光纤光栅选频,使用Optisystem软件进行仿真,通过改变环形腔数量和光纤光栅的3 dB带宽,得到了边模抑制比为88.20 dBm的近单频激光输出。Due to the fact that the near single frequencyfiber laser is characterized with its unique advantages in coherent synthesis,optical communication,laser measurement and spectral analysis,the use of ring cavityfiber laser to achieve near single frequency output has become one of the research focuses for current researchers.Tunablefiber gratingfilters,tunable bandpassfilters,tunable Fabry Perot(F-P)filters,and saturable absorbers are mainly used in ring cavityfiber lasers for a better near single frequency output,with the spectrum of the output laser affected by thefilter bandwidth and the number of ring cavities.Therefore,based onfiber Bragg grating frequency selection and simulation,and by using Optisystem software,a near-single frequency laser output with a side mode suppression ratio of 88.20 dBm can be obtained by changing the number of ring cavities and the 3 dB bandwidth of thefiber grating.

关 键 词：近单频光纤激光器 环形腔 双环腔法 光纤光栅 游标效应 Optisystem仿真 

分 类 号：TN242[电子电信—物理电子学]