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Proceedings Paper

Electric current measurement with high resolution using FBG covered by aluminium thin film
Author(s): Shiquan Yang; Hongyun Meng; Xinyong Dong; Shuzhong Yuan; Xiaoyi Dong
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Paper 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.

Paper Details

Date Published: 29 October 2001
PDF: 4 pages
Proc. SPIE 4595, Photonic Systems and Applications, (29 October 2001); doi: 10.1117/12.446612
Show Author Affiliations
Shiquan Yang, Nankai Univ. (China)
Hongyun Meng, Nankai Univ. (China)
Xinyong Dong, Nankai Univ. (China)
Shuzhong Yuan, Nankai Univ. (China)
Xiaoyi Dong, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 4595:
Photonic Systems and Applications
Yakov S. Sidorin; Ding Yuan Tang, Editor(s)

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