色散补偿微结构光纤拉曼放大特性的研究  

Research on Raman amplification properties of dispersion compensation microstructure fiber

作　　者：赵丽娟[1,2,3] 黄雯利 徐志钮 杨志[1,2,3] ZHAO Lijuan;HUANG Wenli;XU Zhiniu;YANG Zhi(School of Electrical and Electronic Engineering.North China Electric Power University,Baoding.Hebei 071003.China;Hebei Provincial Key Laboratory of Power Internet of Things Technology,North China Electric Power University,Baoding,Hebei 071003.China;Baoding Key Laboratory of Optical fiber Sensing and Optical Com-munication Technology,North China Electric Power University,Baoding.Hebei 071003,China)

机构地区：[1]华北电力大学电气与电子工程学院,河北保定071003 [2]华北电力大学河北省电力物联网技术重点实验室,河北保定071003 [3]华北电力大学保定市光纤传感与光通信技术重点实验室,河北保定071003

出　　处：《光电子．激光》2022年第1期91-97,共7页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金(62171185,61775057);河北省自然科学基金(E2019502177,E2020502010);河北省级科技计划(SZX2020034);中央高校基本科研业务费专项资金项目(2021MS072,2019MS085)资助项目。

摘　　要：为了提高光纤拉曼放大器的放大性能,设计了一种高拉曼增益系数和较大负色散的光子晶体光纤。利用全矢量有限元分析方法对包层为正八边形的光子晶体光纤进行数值分析,探究空气孔结构和纤芯掺锗浓度的改变对有效模场面积和拉曼增益系数的影响,最后得到一种小模场面积、高拉曼增益系数和较大负色散的光子晶体光纤。研究结果表明:在泵浦波长为1450 nm且信号波长为1550 nm处包层空气孔直径为1μm、孔间距为1.2μm的掺锗光子晶体光纤结构可获得19.97 W^(-1)·km^(-1)的高拉曼增益系数,同时在1550 nm处可获得-327.6 ps/(nm·km)的较大负色散,该光纤的综合特性对于拉曼放大器放大性能的提高有重要意义。In order to improve the amplification performance of the fiber Raman amplifier,a photonic crystal fiber with high Raman gain coefficient and larger negative dispersion was designed.The full vector finite element analysis method is used to numerically analyze the photonic crystal fiber with a regular octagonal cladding,explore the effects of changes in air pore structure and core doped germanium concentration on effective mode field area and Raman gain coefficient.Finally,a photonic crystal fiber with small mode field area,high Raman gain coefficient and large negative dispersion is obtained.The research results show that the germanium-doped photonic crystal fiber structure with a cladding air hole diameter of 1μm and a hole spacing of 1.2μm at a pump wavelength of 1450 nm and a signal wavelength of 1550 nm can obtain a high Raman gain coefficient of 19.97 W^(-1)·km^(-1).At the same time,a large negative dispersion of-327.6 ps/(nm·km)can be obtained at 1550 nm.The comprehensive characteristics of this fiber are of great significance to the improvement of the amplification performance of the Raman amplifier.

关 键 词：正八边形光子晶体光纤 有效模场面积 拉曼增益系数 掺锗 色散 

分 类 号：TN913.7[电子电信—通信与信息系统]