| 光纤布喇格光栅电流传感器研究 |
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| 引用本文： | 冯德军,开桂云,赵启大,董孝义. 光纤布喇格光栅电流传感器研究[J]. 红外与毫米波学报, 2001, 20(4): 241-243 |
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| 作者姓名： | 冯德军 开桂云 赵启大 董孝义 |
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| 作者单位： | 南开大学光子技术中心!天津，300071，南开大学光子技术中心!天津，300071，南开大学光子技术中心!天津，300071，南开大学光子技术中心!天津，300071 |
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| 基金项目： | 国家自然科学基金 (编号 :6963 70 5 0 )，国家 863计划基金 (编号 :863 -3 0 7-1-5 (11) )资助项目~~ |
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| 摘 要： | 本文实现了一种基于磁致伸缩棒在均匀磁场中的伸缩效应的光纤布喇格光栅电流传感器 .把光纤布喇格光栅牢固地沿纵向粘贴在一个置于多层漆包线绕成的螺线管中间的磁棒上 ,磁棒在螺线管中间部分的匀强磁场中随漆包线中电流的增加而沿纵向伸长 ,从而带动光栅在应变的作用下改变波长 .实验测得电流跟波长变化基本上成线性关系 ,波长的改变范围约 0 .9nm,其灵敏度约为 0 .0 0 1nm/ m A
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| 关 键 词： | 磁致伸缩材料 光纤布喇格光栅 螺线管 电流传感器 |
STUDY ON THE ELECTRIC CURRENT SENSOR OF FIBER BRAGG GRATING |
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| FENG De Jun KAI Gui Yun ZHAO Qi Da DONG Xiao Yi. STUDY ON THE ELECTRIC CURRENT SENSOR OF FIBER BRAGG GRATING[J]. Journal of Infrared and Millimeter Waves, 2001, 20(4): 241-243 |
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| Authors: | FENG De Jun KAI Gui Yun ZHAO Qi Da DONG Xiao Yi |
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| Abstract: | A new electric current sensor based on a fiber Bragg grating tuned by a magnetostrictive material rod was obtained. The fiber Bragg grating was firmly clung on a magnetostrictive rod that was put into the central part of a solenoid. The rod was elastically lengthened along the direction of the magnetic field, so the Bragg wavelength of the fiber Bragg grating was changed when the uniform magnetic field in the solenoid increased. The relationship between the electric current in the solenoid and the change of wavelength is basically linear. The wavelength range of linear tuning is about 0.9nm, and its tuning sensitivity is about 0.001nm/mA. |
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| Keywords: | magnetostrictive material fiber Bragg grating solenoid electric current sensor. |
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