光子晶体光纤色散特性的多极法研究  

Analysis of Dispersion Properties of Photonic Crystal Fibers by Multipole Method

作　　者：杜海龙[1] 郑义[2] 李坤[1] 傅修远[1] 闫昕[1] 

机构地区：[1]郑州大学河南省激光与光电信息技术重点实验室,河南郑州450052 [2]北京交通大学理学院,北京100044

出　　处：《激光与红外》2008年第2期161-164,共4页Laser & Infrared

基　　金：国家自然科学基金(No.60478021)资助

摘　　要：应用多极法对折射率导模型光子晶体光纤的色散特性进行了数值模拟。与实验数据对比,验证了该计算方法的准确性。研究了结构参量孔径d、孔距Λ和包层空气孔层数Nr对光子晶体光纤色散特性的影响;分析表明,通过改变包层空气孔直径d或空气孔间距Λ,可使光子晶体光纤零色散波长移动;当包层空气孔层数Nr较小时,Nr不同的各光纤色散特性差别极大;当Nr足够大时,将不再影响光子晶体光纤的色散特性。本文的计算和分析可以为设计适当色散特性的光子晶体光纤提供理论依据。The dispersion characteristics of photonic crystal fibers （PCF） are simulated numerically by the multipele method. It is proved to be accurate contract with the experiment data. We have studied the effect of the structural parameters on dispersion properties such as hole diameter, pitch and the number of the hole rings. It shows that the zerodispersion wavelength can be shifted by Changing the pitch or hole diameter. When N, is small, the dispersion properties of the photonic crystal fibers have large differentiation ; but when Nr is larger the dispersion properties will no longer change. The calculation and the analysis provides a certain theoretical base with the design of photonic crystal fibers with desirable dispersion.

关 键 词：光子晶体光纤 色散 模式折射率 多极法 

分 类 号：TN929.11[电子电信—通信与信息系统]