磁光纤光栅传感器灵敏度及动态范围研究  

Research on sensitivity and dynamic range of magnetic field sensor based on magneto-optic fiber bragg grating

作　　者：杨颖[1] 邱昆[1] 武保剑[1] 

机构地区：[1]电子科技大学宽带光纤传输与通信网技术教育部重点实验室,成都610054

出　　处：《光通信技术》2009年第2期48-50,共3页Optical Communication Technology

基　　金：国家自然科学基金(No:60671027)资助;四川省应用基础研究(No.07JY029-089)资助

摘　　要：利用传输矩阵的方法,研究了在线偏振光输入的情况下,磁光纤光栅的透射谱特性。透射谱中存在两条尖锐谱线,谱线的间隔随外加轴向磁场强度的大小线性变化,可以用于磁光传感。并且进一步研究了Bragg波长和一级磁光系数对传感器的灵敏度和动态范围的影响,为设计性能较好的磁光传感器提供了理论依据。The transmission spectrum of Magneto-Optic Fiber Bragg Gratings(MFBG)is investigated by using transfer matrix method,when the incident light is linearly polarized light,The results show that two sharp spectral lines in the transmission spectrum are directly proportional to the magnetization component in the propagating direction.This characteristic is of great use in magneto-optic sensitizing.The influences on the sensor s sensitivity and dynamic range by Bragg wavelengths and first order magneto optic coef...

关 键 词：磁光纤光栅 磁光传感器 灵敏度 动态范围 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]