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Proceedings Paper

Sensitive current sensing base on all-fiber Mach-Zehnder interferometer
Author(s): Zhengrong Tong; Yonglin Huang; Shiquan Yang; Dejun Feng; Guiyun Kai; Qida Zhao; Xiaoyi Dong
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Paper Abstract

A direct current sensor based on all-fiber Mach-Zehnder interferometer is demonstrated in this paper. The phases of interferometric lights in the interferometer is modulated by heat effect when current flowing through a thin metal tube. The charactersistics of current sensing are studied experimentally. Adopting the wavelength scale method, in the case of elimination of environmental perturbation, the wavelength changing range is 32nm when the current changes from 0 to 1.8A. The shifting wavelength is linear to the power and the linear fitting is 0.9987. The tuning efficiency is approximately 19.47nm/W.

Paper Details

Date Published: 9 September 2002
PDF: 5 pages
Proc. SPIE 4920, Advanced Sensor Systems and Applications, (9 September 2002); doi: 10.1117/12.482021
Show Author Affiliations
Zhengrong Tong, Nankai Univ. (China)
Yonglin Huang, Nankai Univ. (China)
Shiquan Yang, Nankai Univ. (China)
Dejun Feng, Nankai Univ. (China)
Guiyun Kai, Nankai Univ. (China)
Qida Zhao, Nankai Univ. (China)
Xiaoyi Dong, Nankai Univ. (China)


Published in SPIE Proceedings Vol. 4920:
Advanced Sensor Systems and Applications
Yun-Jiang Rao; Julian D. C. Jones; Hiroshi Naruse; Robert I. Chen, Editor(s)

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