一种新结构高负色散光子晶体光纤  

A novel photonic crystal fiber with high negative dispersion

作　　者：许强 赵亚 刘思聪 张亚妮 XU Qiang;ZHAO Ya;LIU Sicong;ZHANG Ya＇ni(College of Physics and Optoelectronic Technology, Baoji University of Arts and Sciences, Baoji 721016, China;Baoji Engineering Technology Research Center on Ultrafast Laser and New Materials, Baoji 721016, China)

机构地区：[1]宝鸡文理学院物理与光电技术学院,陕西宝鸡721016 [2]宝鸡市超快激光与新材料工程技术研究中心,陕西宝鸡721016

出　　处：《量子电子学报》2018年第3期332-337,共6页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金;11647008;陕西省科学技术研究计划项目;2014K08-17;2014KW07-01;宝鸡市重大科技专项计划项目;2015CXNL-1-3;宝鸡文理学院科研项目;ZK15029;Gk1503~~

摘　　要：设计了一种新型高负色散光子晶体光纤,其纤芯由三根空气柱形成,三种孔径大小不同的空气柱以六角点阵方式排列。基于全矢量有限元法,结合各向异性完美匹配层边值条件对光子晶体光纤的色散、模场、非线性、约束损耗和双折射等特性进行了数值计算。结果表明光纤结构参数A、d、d_1、d_2分别为1.15、0.88、0.83、1.14μm时,该光纤在低损耗通信窗口C波段呈现高负色散,在波长1.55μm处负色散值、双折射、约束损耗、非线性系数分别为-11660 ps·km^(-1)·nm^(-1)、2.03×10^(-3)、10^(-3)dB.km^(-1)、7.33 km^(-1)·W^(-1)。可见该光纤在低损耗通信窗口C波段呈现高负色散、低损耗、高双折射、低非线性,具有很好的色散补偿能力,有望在光通信系统中获得应用。A novel photonic crystal fiber with high negative dispersion is proposed. The fiber core is formed by three air columns, and three air-holes with different diameters are arranged in hexagonal lattice cladding. The dispersion, mode field, nonlinearity, leakage loss and birefringence are numerically calculated based on full vector finite element method combining with anisotropic perfectly matched layers boundary condition. Results show that when the fiber structure parameters A, d, d_1,d_2 are 1.15,0.88, 0.83, 1.14 μm, respectively, the fiber exhibits high negative dispersion in low-loss communication window C band. The negative dispersion, birefringence, leakage loss and nonlinear coefficient values are-11660 ps·km-1·nm-1, 2.03×10-3, 10-3 dB·km-1, 7.33 km-1·W-1 at 1.55 μm, respectively. It is shown that the optical fiber has high negative dispersion, low loss, high birefringence, low nonlinearity and good dispersion compensation ability in C band of low loss communication window, and it is expected to be used in optical communication system.

关 键 词：纤维与波导光学 高负色散 全矢量有限元法 低损耗 

分 类 号：TN929.11[电子电信—通信与信息系统]