| 干涉型光纤微弱磁场传感系统换能器的设计 |
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| 引用本文： | 施长海,陈建平,李新碗,王晓扬.干涉型光纤微弱磁场传感系统换能器的设计[J].传感器与微系统,2006,25(12):67-69. |
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| 作者姓名： | 施长海 陈建平 李新碗 王晓扬 |
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| 作者单位： | 上海交通大学,区域光纤通信网与新型光通信系统国家重点实验室,上海,200240 |
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| 基金项目： | 航空科研项目
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教育部资助项目 |
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| 摘 要： | 通过理论分析与实验比较,为干涉型光纤微弱磁场传感系统的换能器提出了一体化的设计方法。分析了干涉型光纤微弱磁场传感系统的基本工作原理和影响换能器性能的主要因素,对传统高灵敏度的换能器结构进行了改进,并进行一体化设计。实验结果表明:该一体化的换能器,相对传统换能器而言,具有更高的灵敏度和更好的方向性,并具有隔音和防振效果。采用该换能器的传感系统工作稳定,对被测磁场具有非常好的线性响应。
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| 关 键 词： | 磁致伸缩 光纤干涉仪 换能器 磁强计 |
| 文章编号： | 1000-9787（2006）12-0067-03 |
| 收稿时间： | 2006-05-12 |
| 修稿时间： | 2006年5月12日 |
Design of transducer in fiber-optic interferometric magnetometers for measarement of low-intensity magnetic fields |
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| SHI Chang-hai,CHEN Jian-ping,LI Xin-wan,WANG Xiao-yang.Design of transducer in fiber-optic interferometric magnetometers for measarement of low-intensity magnetic fields[J].Transducer and Microsystem Technology,2006,25(12):67-69. |
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| Authors: | SHI Chang-hai CHEN Jian-ping LI Xin-wan WANG Xiao-yang |
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| Affiliation: | State Key Laboratory on Fiber-Optic Local Area Network and Advanced Optical Communication System, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | Based on the theoretical analysis and experimental comparison, a compact design method for transducers of fiber-optic low-intensity interferometric magnetometers is presented. The fundamentals of the fiberoptic interferometric magnetometer and figures out the main factors limiting its performance are analysed. Transducer structure are improved. Experimental results proved that the transducer has higher sensitivity and better directivity than the traditional transducer. The system can work stably and provide linear output to the measured magnetic field. |
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| Keywords: | magnetostriction fiber-optic interferometer transducer magnetometer |
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