摘要
一、前言 高双折射单模光纤是一种重要的保偏光纤,它可以在长距离内保持光线传播的偏振状态,因而可用于相干光通信及相位型光纤传感器中作为传输介质。本文用干涉显微镜法测量了高双折射单模光纤的折射率分布,给出了两个方向的折射粼差△n,,所用的样品为北京玻璃研究所研制的新型光纤,光纤结构采用领结型,结构如图1所示。由图可以看到在光纤垂直方向制造高应力区,从垂直方向对光纤芯施加应力,
In this paper the refractive index difference (An) of two directions of high double refraction single mode fiber is measured with interference microscope method. The beatlength (Lb) which is calculated (Ls = 1.27mm at 633 nm) by using (Ane) and agreement between calculated values and measured values of Beijing Glass Research Institude (Lb<2 mm at 633 nm).
出处
《通信学报》
EI
CSCD
北大核心
1991年第6期99-100,共2页
Journal on Communications
