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19 October 2001 Simultaneous measurement of strain and temperature using dual-period fiber grating
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Proceedings Volume 4579, Optical Fiber and Planar Waveguide Technology; (2001)
Event: Asia-Pacific Optical and Wireless Communications Conference and Exhibit, 2001, Beijing, China
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.
© (2001) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Muguang Wang, Tangjun Li, Yucheng Zhao, Huai Wei, Zhi Tong, and Shuisheng Jian "Simultaneous measurement of strain and temperature using dual-period fiber grating", Proc. SPIE 4579, Optical Fiber and Planar Waveguide Technology, (19 October 2001);

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