15 August 2014 Simultaneous strain and temperature measurement using a no-core fiber-based modal interferometer with embedded fiber Bragg grating
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Abstract
A simple fiber-optic sensor based on a fiber Bragg grating (FBG) embedded in a fiber modal interferometer (MI) for simultaneous measurements of temperature and strain is proposed and experimentally demonstrated. The fiber MI is constructed by splicing two sections of the no-core fiber (NCF) between the single-mode fibers. Due to the different responses of the NCF-based MI and the FBG to the same temperature and strain, the discrimination between temperature and strain can be easily achieved. For a 0.01-nm wavelength resolution, the resolution of the sensor is 0.216°C and 6.75  με in temperature and strain, respectively.
© 2014 Society of Photo-Optical Instrumentation Engineers (SPIE)
Shaowei Yu, Shaowei Yu, Li Pei, Li Pei, Chao Liu, Chao Liu, Yiqun Wang, Yiqun Wang, Sijun Weng, Sijun Weng, } "Simultaneous strain and temperature measurement using a no-core fiber-based modal interferometer with embedded fiber Bragg grating," Optical Engineering 53(8), 087105 (15 August 2014). https://doi.org/10.1117/1.OE.53.8.087105 . Submission:
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