基于双芯光纤滤波器解调的光纤光栅电流测量  

Fiber Bragg Grating AC Current Measurement Based on Twin-Core Fiber Filter

作　　者：姚远[1] 易本顺[1] 董小鹏[2] 邹毅[2] 肖进胜[1] 

机构地区：[1]武汉大学电子信息学院 [2]厦门大学信息科学与技术学院,福建厦门361005

出　　处：《传感技术学报》2008年第6期1070-1074,共5页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金项目资助(60472025)

摘　　要：利用光纤光栅(Fiber Bragg grating,简称FBG)、超磁致伸缩材料(Giant magnetostriction material,简称GMM)和基于双芯光纤滤波器的解调系统实现了交流电流的测量。在介绍超磁致伸缩材料的磁致伸缩效应、光纤光栅检测电流原理以及双芯光纤滤波器解调原理的基础上,借助超磁致伸缩材料和光纤光栅等构建了电流测量单元。利用设计的电流测量单元,在施加0～4.5A(50Hz)范围的交流激励电流时,经基于双芯光纤滤波器的解调系统解调,验证了采用该方案检测电流的可行性。The measurement of alternating current （AC） is realized by using fiber Bragg grating （FBG）, giant magnetostriction material （GMM）, and the interrogation technology of twin-core fiber filter. Based on the theoretical analysis of the principle of the FBG current measurement, the magnetostrictive effect of GMM, and the interrogation technology of twin-core fiber filter are introduced. The sensing unit of AC current measurement is constructed with GMM and FBG. When the AC exciting current is in the scope of 0-4.5 A （50 Hz） through a solenoid coil, the feasibility of AC current measurement by using this method was verified.

关 键 词：电流测量 光纤光栅 双芯光纤 磁致伸缩效应 波长解调 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]