Temperature-insensitive strain sensor based on in-line Fabry-Perot interferometer

Yiping Wang; Shen Liu; Changrui Liao; Zhengyong Li; Qiao Wang; Guolu Yin; Jun He; Bing Sun; Jing Zhao; Jian Tang

doi:10.1117/12.2059414

2 June 2014 Temperature-insensitive strain sensor based on in-line Fabry-Perot interferometer

Yiping Wang, Shen Liu, Changrui Liao, Zhengyong Li, Qiao Wang, Guolu Yin, Jun He, Bing Sun, Jing Zhao, Jian Tang

Proceedings Volume 9157, 23rd International Conference on Optical Fibre Sensors; 915725 (2014) https://doi.org/10.1117/12.2059414
Event: OFS2014 23rd International Conference on Optical Fiber Sensors, 2014, Santander, Spain

Abstract

We demonstrated a high-sensitivity strain sensor based on an in-line Fabry-Perot interferometer with an air cavity whose was created by splicing together two sections of standard single mode fibers. The sensitivity of this strain sensor was enhanced to 6.02 pm/με by improving the cavity length of the Fabry-Perot interferometer by means of repeating arc discharges for reshaping the air cavity. Moreover, such a strain sensor has a very low temperature sensitivity of 1.06 pm/°C, which reduces the cross-sensitivity problem between tensile strain and temperature.

Citation Download Citation

Yiping Wang, Shen Liu, Changrui Liao, Zhengyong Li, Qiao Wang, Guolu Yin, Jun He, Bing Sun, Jing Zhao, and Jian Tang "Temperature-insensitive strain sensor based on in-line Fabry-Perot interferometer", Proc. SPIE 9157, 23rd International Conference on Optical Fibre Sensors, 915725 (2 June 2014); https://doi.org/10.1117/12.2059414

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