磁光玻璃光纤的偏振特性及其在全光纤电流传感器中的应用  

Polarization Properties of Magneto-optic Glass Fiber and Its Application in All-Fiber Current Sensor

作　　者：卜胜利[1] 杨瀛海[1] 马静[1] 

机构地区：[1]安徽大学物理系光纤研究室,安徽合肥230039

出　　处：《应用光学》2003年第5期32-35,共4页Journal of Applied Optics

摘　　要：　在磁光玻璃裸光纤偏振特性研究的基础上,研制磁光玻璃光纤,偏振特性及其在全光纤电流传感器中的应用。将采用模管法拉制成的磁光玻璃光纤置于亥姆霍兹线圈产生的磁场中,当线偏振光通过该光纤时,其偏振面旋转一定角度,把该角度转换成光信号的强度,然后再用仪器进行检测。通过对线偏振光偏振面在磁场中的偏振特性的测试与实验,提出用磁光玻璃光纤构成的全光纤电流传感器,可用于电流和磁场测试。Based on the research of polarization properties in magnetooptic glass bare fiber,the fabrication of magnetooptic glass fiber introduced. Its polarizationproperties and applications in allfiber current sensor are studied.When the optical fiber which is drawn by the magnetooptic glass with the rodintube method is put in the magnetic field produced by Helmholtz coil and while the linearlypolarized beam goes through the fiber, the polarization plane of the linearly polarized beam is rotated to a certain angle. The azimuth rotation can be detected by means of the intensity of the optical signal. From this research it is concluded that the magnetooptic glass fiber is applicable for making the allfiber current sensor which is to be used for the measurement of electric current and magnetic field.

关 键 词：磁光玻璃光纤 法拉第效应 全光纤电流传感器 费尔德常数 偏振特性 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置] TN253[自动化与计算机技术—控制科学与工程]