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Proceedings Paper

A Sagnac loop sensor for simultaneous strain and temperature measurement
Author(s): Juan Kang; Xinyong Dong; Chunliu Zhao; Youwei Zhao; Mengchao Li
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Paper Abstract

A Sagnac loop sensor with a long-period grating (LPG) inscribed in polarization maintains fiber (PMF) for simultaneous strain and temperature measurement is proposed. Taking using of the different responses of the LPG and the Sagnac loop to strain and temperature, simultaneous measurement can be achieved by monitoring the wavelength shifts and the intensity changes of resonance peaks. The experiments show that sensitivity of strain and temperature are 6.4×10-3 dB/με and 0.65 nm/°C, respectively.

Paper Details

Date Published: 17 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77531E (17 May 2011); doi: 10.1117/12.885572
Show Author Affiliations
Juan Kang, China Jiliang Univ. (China)
Univ. of Shanghai for Science and Technology (China)
Xinyong Dong, China Jiliang Univ. (China)
Chunliu Zhao, China Jiliang Univ. (China)
Youwei Zhao, Zhejiang Tianma Bearing Co., Ltd (China)
Mengchao Li, Univ. of Shanghai for Science and Technology (China)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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