3 December 2014 Experimental research of optical fiber current sensors based on the Loren magnetic force
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Abstract
We propose a simple optical fiber current sensors based on the Lorentz force to measure the current. We use two copper carrying wires, and the two carrying wires are parallel fixed to the insulated coil spring. Then, the two optical fibers are vertically fixed on two copper, respectively. When the current input the wires, Loren magnetic force will be existed between wires. The force causes deformation of the spring and leads to the displacement of the fiber’s end faces. So the spectra should be changed. The experimental device is used to measure the current at range for the 1-5 A, the response time is about 0.1 seconds, and resolution sensitivity of the sensor is 10 nm/A. The results show that the device is simple and low costs. It has a potential applied in high current sensing.
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Zhi Zhang, Haitao Yan, Xiaoyan Zhao, Jitao Xie, Chao Zhang, Hui Hao, Ming Wang, "Experimental research of optical fiber current sensors based on the Loren magnetic force", Proc. SPIE 9297, International Symposium on Optoelectronic Technology and Application 2014: Laser and Optical Measurement Technology; and Fiber Optic Sensors, 929738 (3 December 2014); doi: 10.1117/12.2074555; https://doi.org/10.1117/12.2074555
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