Simultaneous strain and temperature measurement using a no-core fiber-based modal interferometer with embedded fiber Bragg grating

Shaowei Yu; Li Pei; Chao Liu; Yiqun Wang; Sijun Weng

doi:10.1117/1.OE.53.8.087105

15 August 2014 Simultaneous strain and temperature measurement using a no-core fiber-based modal interferometer with embedded fiber Bragg grating

Shaowei Yu, Li Pei, Chao Liu, Yiqun Wang, Sijun Weng

Author Affiliations +

Optical Engineering, Vol. 53, Issue 8, 087105 (August 2014). https://doi.org/10.1117/1.OE.53.8.087105

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.

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Shaowei Yu, Li Pei, Chao Liu, Yiqun Wang, and 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

Published: 15 August 2014

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