一种晶体光纤基模色散特性的矢量法分析  

Vector analysis of dispersion for the fundamental cladding mode in photonic crystal fibers

作　　者：李曙光[1] 刘晓东[2] 侯蓝田[1] 

机构地区：[1]燕山大学红外光纤与传感研究所,秦皇岛066004 [2]大连民族学院机电信息工程系,大连116600

出　　处：《物理学报》2004年第6期1873-1879,共7页Acta Physica Sinica

基　　金：国家高技术研究发展计划 (批准号 :2 0 0 3AA3 110 11);国家重点基础研究发展计划 (批准号 :2 0 0 3CB3 14 90 5 )资助的课题~~

摘　　要：利用矢量有效折射率方法 (矢量法 )对光子晶体光纤基模的色散特性进行了数值模拟 ,并与双正交归一基矢量法以及标量有效折射率方法 (标量法 )的模拟结果进行了对比 .发现所用矢量法的结果与双正交归一基矢量法的结果符合很好 ,而标量法在低空气填充率f或较高归一化波数A λ时是一种较好的近似 ,在空气填充率f较高或归一化波数A λ较低时 ,要得到精确的结果必须利用矢量法对光子晶体光纤的特性进行模拟 .The dispersions of the fundamental cladding mode in photonic crystal fibers(PCFs)are computed with a vectorial effective index approach in this paper. By comparing with the results obtained from biorthonormal basis method or scalar effective method,it is found that the results of this paper are in accordance with that obtained from the biorthonormal basis method, and that the scalar effective method is a good approximation at a lower air filling fraction or higher normalized wave number A/λ . For high accuracy at larger air filling fraction or lower normalized wave number A/λ ,it is necessary to consider the vectorial method. The relation between effective index of cladding and microstructure of PCFs is discussed. The computation and analysis in this paper can provide a theoretic reference for designing of PCFs.

关 键 词：光子晶体光纤 矢量法 有效折射率 色散 光纤结构 

分 类 号：O436[机械工程—光学工程]