| 基于全光纤萨格纳克干涉仪的温度不敏感磁场测量 |
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| 引用本文： | 文峰,武保剑,李智,李述标.基于全光纤萨格纳克干涉仪的温度不敏感磁场测量[J].物理学报,2013,62(13):130701-130701. |
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| 作者姓名： | 文峰 武保剑 李智 李述标 |
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| 作者单位： | 电子科技大学光纤传感与通信教育部重点实验室, 成都 611731 |
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| 基金项目： | 国家重点基础研究发展计划(973计划)，国家自然科学基金(批准号:61271166)资助的课题.* Project supported by the National Basic Research Program of China，the National Natural Science Foundation of China |
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| 摘 要： | 研究了双折射磁光光纤萨格纳克 (Sagnac) 干涉仪透射谱的磁场和温度敏感性. 实验表明, 干涉仪透射谱会随着温度的增加向短波长移动 (温度系数为-0.435 nm/℃), 其波长依赖性则随着磁场的增加而降低. 据此, 通过调节干涉仪内偏振控制器状态实现了温度不敏感的磁场测量, 磁场系数为189 mW/T2, 实验结果与理论分析一致.
关键词：
磁场测量
磁光效应
双折射
萨格纳克干涉仪
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| 关 键 词： | 磁场测量 磁光效应 双折射 萨格纳克干涉仪 |
| 收稿时间： | 2013-01-28 |
Temperature-insensitive magnetic-field measurement using all-fiber Sagnac interferometers |
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| Wen Feng
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Wu Bao Jian
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Li Zhi
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Li Shu Biao.Temperature-insensitive magnetic-field measurement using all-fiber Sagnac interferometers[J].Acta Physica Sinica,2013,62(13):130701-130701. |
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| Authors: | Wen Feng Wu Bao Jian Li Zhi Li Shu Biao |
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| Abstract: | Magnetic field and temperature dependence of Sagnac interferometers consisting of birefringent magneto-optic fibers is investigated. Experimental results show that the transmission spectrum of the all-fiber Sagnac interferometer moves towards the shorter wavelength side with the increase in temperature (temperature coefficient -0.435 nm/℃), and the transmissivity becomes wavelength- insensitive for a larger magnetic induction. And then, the temperature-insensitive magnetic field measurement is achieved by adjusting the polarization controller within the interferometer, and the magnetic field coefficient is 189 mW/T2 in the experiment, which is in agreement with the theoretical results.
Keywords：
magnetic field measurement
magneto-optic effect
birefringence
Sagnac interferometer |
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| Keywords: | magnetic field measurement magneto-optic effect birefringence Sagnac interferometer |
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