双折射光子晶体光纤横截面上偏振态的不一致性  

Non-Uniformity of Polarization in Cross-Section of Photonic Crystal Fibers with High Birefringence

作　　者：王智[1] 张玉金[2] 周志华[1] 任国斌[1] 娄淑琴[1] 荆涛[1] 

机构地区：[1]北京交通大学电子信息工程学院,北京100044 [2]铁道科学研究院通信信号研究所北京,100081

出　　处：《北京交通大学学报》2004年第5期24-27,共4页JOURNAL OF BEIJING JIAOTONG UNIVERSITY

摘　　要：利用全矢量特征方程得到光子晶体光纤中的模式特征后,忽略光纤损耗、三阶以上的色散和非线性,研究了高斯脉冲在椭圆孔光子晶体光纤中传输时的矢量演化特性,得到光纤中任意时刻的横向电场分布及两个偏振分量之间的相位关系.在双折射光子晶体光纤同一横截面上,不同位置的两个偏振态分量之间相位差不同,因而总电场的偏振态不一致,光电场和固有双折射引起的偏振态之间的相位差都关于光纤中心对称.In the elliptical hole photonic crystal fibers with intrinsic birefringence, when the fiber loss, over the third order dispersion and the nonlinearity are neglected, the vectorial evolution properties of the Gaussian pulse are investigated in detail based on the full_vectorial eigen system which is deduced from the full_vectorial coupled wave equations. The electric field and the phase difference Δφ between both polarization components are obtained. In the cross_section of the fiber, the polarization states are different because Δφ depends on the position (x,y) due to the vector property of the modes. The electric field and Δφ have the central symmetry.

关 键 词：折射方式 光子晶体光纤 偏振态 偏振分量 光纤通信技术 

分 类 号：TN929.11[电子电信—通信与信息系统] TN814.6[电子电信—信息与通信工程]