29 October 2001 Electric current measurement with high resolution using FBG covered by aluminium thin film
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Proceedings Volume 4595, Photonic Systems and Applications; (2001) https://doi.org/10.1117/12.446612
Event: International Symposium on Photonics and Applications, 2001, Singapore, Singapore
Abstract
We introduce a novel electric current sensor, which is based on a fiber Bragg grating covered by a uniform coat of aluminum thin film which was deposited on the FBG by a simple evaporation method. The Bragg wavelength of the fiber grating shifts when the current flowing through the film varies due to the Joule heat generated by the current. The relationship between the square of the current intensity and the wavelength shift is basically linear. In the experiment, the maximum current can be measured was 43.1 mA with the wavelength sift of about 4 nm and the current sensitivity was about 2.31 X 10-3 nm/(mA)2.
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Shiquan Yang, Hongyun Meng, Xinyong Dong, Shuzhong Yuan, Xiaoyi Dong, "Electric current measurement with high resolution using FBG covered by aluminium thin film", Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446612; https://doi.org/10.1117/12.446612
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