双包层椭圆光纤的保偏特性

Polarization Characteristics of Double-Clad Elliptical Fibers

本文对双包层椭圆光纤进行了解析求解，得到了模式特征方程．研究了基模的保偏特性，给出了不同椭圆比下的归一化双折射和模间色激随归一化频率、纤芯内包层相对折射率差、内包层和纤芯半长轴比等参数的变化关系曲线。

The solutions of electromagnetic wave equations in double-clad elliptical fibers have been studied and mode characteristic equations obtained. The polarization properties for fundamental modes are investigated. For different aspect ratios, the normalized birefringence and modal dispersion as functions of normalized frequency, index difference between the core and inner cladding and the major semiaxes ratio of the inner cladding to the core are presented.