用等效矩形波导近似研究双模椭圆芯光纤的特性  

Propagation characteristics of dual mode elliptical core fibers by an equivalent rectagular waveguide method

作　　者：董建峰[1] 聂秋华[1] 

机构地区：[1]宁波大学物理系

出　　处：《光学技术》1997年第1期7-9,共3页Optical Technique

摘　　要：用等效矩形波导近似，结合一级微扰理论，研究了双模椭圆芯光纤的传播特性，得到了双模运行的Ｖ值范围和Ｅｘ２１模与Ｅｘ１１模之间的双折射。By using an equivalent rectagular waveguide method, incorporating first order perturbation theory, propagation characteristics of dual mode elliptical core fibers are studied V value of the dual mode region, variation of birefringence and group index difference between E x 21 modes and E x 11 modes as a function of normalized frequency V for different values of the aspect ratio a/b are obtained.

关 键 词：椭圆光纤 双模 光纤 双折射 模间色散 

分 类 号：TN253[电子电信—物理电子学]