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Proceedings Paper

Intensity-referenced and temperature-independent pressure sensing based on strain-chirped fiber Bragg grating
Author(s): Tuan Guo; Qida Zhao; Lifang Xue; Junfeng Lv; Hong Kang; Bo Dong; Shuhong Li; Hong Gu; Guiling Huang; Xiaoyi Dong
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Paper Abstract

Temperature-insensitive pressure measurement using a single fiber Bragg grating (FBG) based on reflection spectrum bandwidth modulation and optical power detection is proposed. A specially designed double-hole cantilever beam (DHCB) is used to provide pressure induced axial strain gradient along the sensing FBG and further modulate the reflection bandwidth of the grating. The bandwidth modulation immunes to spatially uniform temperature effect and the pressure can be unambiguous determined by reflected optical power measurement, avoiding the complex wavelength interrogation system. The thermal fluctuate of the system is less than 1.2 % F.S. for temperature range from -10°C to 80 °C without any temperature compensation.

Paper Details

Date Published: 5 March 2007
PDF: 6 pages
Proc. SPIE 6595, Fundamental Problems of Optoelectronics and Microelectronics III, 65953Q (5 March 2007); doi: 10.1117/12.726477
Show Author Affiliations
Tuan Guo, Nankai Univ. (China)
Qida Zhao, Nankai Univ. (China)
Lifang Xue, Nankai Univ. (China)
Junfeng Lv, Nankai Univ. (China)
Hong Kang, Nankai Univ. (China)
Bo Dong, Nankai Univ. (China)
Shuhong Li, Nankai Univ. (China)
Hong Gu, Nankai Univ. (China)
Guiling Huang, Nankai Univ. (China)
Xiaoyi Dong, Nankai Univ. (China)

Published in SPIE Proceedings Vol. 6595:
Fundamental Problems of Optoelectronics and Microelectronics III
Yuri N. Kulchin; Jinping Ou; Oleg B. Vitrik; Zhi Zhou, Editor(s)

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