Simultaneous measurement of temperature and strain by using a wide-band fiber Bragg grating

Lunlun Xian; Peng Wang; Hongpu Li

doi:10.1117/12.2205659

8 October 2015 Simultaneous measurement of temperature and strain by using a wide-band fiber Bragg grating

Lunlun Xian, Peng Wang, Hongpu Li

Proceedings Volume 9679, AOPC 2015: Optical Fiber Sensors and Applications; 96791D (2015) https://doi.org/10.1117/12.2205659
Event: Applied Optics and Photonics China (AOPC2015), 2015, Beijing, China

Abstract

A novel power-interrogated sensor that allows for the simultaneous measurement of temperature and strain is proposed and experimentally demonstrated. The sensor is based on the use of a linearly chirped fiber Bragg grating (FBG) with a broad (~10 nm) as well as slant reflection spectrum. Unlike most of the previous FBG-based sensors, the FBG proposed here is simultaneously used as both the sensing and the interrogating element. The measurement accuracies for the temperature and the strain are estimated to be ±2 °C in the range of 12-197 °C and ±24in με the range of 0-1270 με, respectively.

Citation Download Citation

Lunlun Xian, Peng Wang, and Hongpu Li "Simultaneous measurement of temperature and strain by using a wide-band fiber Bragg grating", Proc. SPIE 9679, AOPC 2015: Optical Fiber Sensors and Applications, 96791D (8 October 2015); https://doi.org/10.1117/12.2205659

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