Optics current sensing mechanism under a non-uniform magnetic field

Li Yansong; Zhang Weiwei; Wang Minhao; Liu Jun

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Optics current sensing mechanism under a non-uniform magnetic field

机译：非均匀磁场下的光学电流传感机制

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The effect of the inhomogeneous magnetic field on the Faraday rotation angle and output light intensity was analyzed using finite element simulation, at different distances between the conductor and the magneto-optical glass. The results show that under an inhomogeneous magnetic field, the magnetic birefringence effect due to the Cotton-Mouton effect decreases the output light intensity of the straight-through optical path. The Faraday rotation angle is non-linearly inversely proportional to the distance. Based on these results, which were verified by the theoretical model, a reasonable geometric arrangement of the sensing component of a straight-through optical current sensor is proposed. (C) 2019 Optical Society of America

机译：使用有限元模拟分析了在导体和磁光玻璃之间的不同距离下分析了非均匀磁场对法拉第旋转角度和输出光强度的影响。结果表明，在不均匀的磁场下，由于棉 - Mouton效应引起的磁性双折射效果降低了直通光路的输出光强度。法拉第旋转角度与距离是非线性成反比的。基于这些结果，由理论模型验证，提出了直通光电流传感器的感测分量的合理几何布置。（c）2019年光学学会

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《Applied optics》 |2019年第20期|共7页
作者
Li Yansong; Zhang Weiwei; Wang Minhao; Liu Jun;
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North China Elect Power Univ Sch Elect &

Elect Engn Beijing 102206 Peoples R China;

North China Elect Power Univ Sch Elect &

Elect Engn Beijing 102206 Peoples R China;

North China Elect Power Univ Sch Elect &

Elect Engn Beijing 102206 Peoples R China;

North China Elect Power Univ Sch Elect &

Elect Engn Beijing 102206 Peoples R China;

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Optics current sensing mechanism under a non-uniform magnetic field

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