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Proceedings Paper

Simultaneous measurement of strain and temperature using dual-period fiber grating
Author(s): Muguang Wang; Tangjun Li; Yucheng Zhao; Huai Wei; Zhi Tong; Shuisheng Jian
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Paper Abstract

This paper demonstrates a novel dual-period fiber grating sensor which can measure strain and temperature simultaneously. The dual-period fiber grating consists of a long-period fiber grating (LPG) and a fiber Bragg grating (FBG) which are written in the same section of an uncovered hydrogen-loaded fiber orderly. As is known, the Bragg wavelength of LPG and that of FBG have the different sensitivity of strain and temperature, then strain and temperature can be determined simultaneously by measuring the two transmitted Bragg wavelengths of the dual-period fiber grating. The accuracy of the sensor in measuring strain and temperature is estimated to be +/- 16 (mu) (epsilon) in a range from 0 to 1700 (mu) (epsilon) and +/- 0.8 degree(s)C from 20 to 120 degree(s)C, respectively.

Paper Details

Date Published: 19 October 2001
PDF: 4 pages
Proc. SPIE 4579, Optical Fiber and Planar Waveguide Technology, (19 October 2001); doi: 10.1117/12.444903
Show Author Affiliations
Muguang Wang, Northern Jiaotong Univ. (China)
Tangjun Li, Northern Jiaotong Univ. (China)
Yucheng Zhao, Northern Jiaotong Univ. (China)
Huai Wei, Northern Jiaotong Univ. (China)
Zhi Tong, Northern Jiaotong Univ. (China)
Shuisheng Jian, Northern Jiaotong Univ. (China)

Published in SPIE Proceedings Vol. 4579:
Optical Fiber and Planar Waveguide Technology
Shuisheng Jian; Yanming Liu, Editor(s)

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