| 基于铽镝铁换能器的全保偏光纤磁场传感系统 |
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| 引用本文： | 张学亮,倪明,孟洲,胡永明.基于铽镝铁换能器的全保偏光纤磁场传感系统[J].国防科技大学学报,2005,27(3):30-33. |
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| 作者姓名： | 张学亮 倪明 孟洲 胡永明 |
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| 作者单位： | 国防科技大学,光电科学与工程学院,湖南,长沙,410073 |
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| 摘 要： | 制作了铽镝铁保偏光纤换能器,建立了全保偏马赫—曾德尔光纤干涉仪系统,采用工作点控制方法解调信号,实现了光纤磁场传感。该全保偏光纤干涉系统结构简单、抗干扰,有效解决了偏振不稳定问题。实验检测了系统对磁场幅度变化的响应特性,最小可测交流磁场信号为3×10-10T。
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| 关 键 词： | 光纤光学 保偏光纤 磁场传感 磁致伸缩 铽镝铁 |
| 文章编号： | 1001-2486(2005)03-0030-04 |
| 收稿时间： | 2004/11/23 0:00:00 |
| 修稿时间： | 2004年11月23 |
All Polarization Maintaining Fiber Magnetic Field Sensing System with TbDyFe Transducer |
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| ZHANG Xueliang,NI Ming,MENG Zhou and HU Yongming.All Polarization Maintaining Fiber Magnetic Field Sensing System with TbDyFe Transducer[J].Journal of National University of Defense Technology,2005,27(3):30-33. |
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| Authors: | ZHANG Xueliang NI Ming MENG Zhou and HU Yongming |
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| Abstract: | TbDyFe transducer with polarization maintaining fiber (PMF) is produced. An all polarization maintaining fiber M-Z interferometer is set up. Magnetic field sensing is realized with optical fiber by means of work point controlling method. This system has many advantages such as simple construction and anti-jamming. Especially it has solved the polarization instability. Responses of the system with the change of the DC signal and AC signal amplitude are measured. The smallest AC magnetic field 3×10-10T is obtained in this system. |
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| Keywords: | fiber optics polarization maintaining fiber magnetic field sensing magnetostriction TbDyFe |
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