Temperature-insensitive pressure or strain sensing technology with fiber optic hybrid Sagnac interferometer

Yuanhong Yang; Lin Lu; Shuo Liu; Wei Jin; Zonghu Han; Yaohui Cao

doi:10.1117/12.2223630

12 May 2016 Temperature-insensitive pressure or strain sensing technology with fiber optic hybrid Sagnac interferometer

Yuanhong Yang, Lin Lu, Shuo Liu, Wei Jin, Zonghu Han, Yaohui Cao

Proceedings Volume 9852, Fiber Optic Sensors and Applications XIII; 985216 (2016) https://doi.org/10.1117/12.2223630
Event: SPIE Commercial + Scientific Sensing and Imaging, 2016, Baltimore, MD, United States

Abstract

The transmission spectrum characteristic of two-segment polarization maintaining fibers Sagnac interferometer was investigated and simulated in detail and a temperature-insensitive pressure or strain sensing technology was proposed. An experimental hybrid Sagnac interferometer was built and the solid core polarization maintaining photonic crystal fiber was taken as the sensing probe. The side pressure sensitive coefficients and the temperature crosstalk drift were measured and compared. The experimental results show that the side pressure sensitive coefficient was ~0.2877 nm/N and the temperature drift was less than 0.1 pm/°C.

Citation Download Citation

Yuanhong Yang, Lin Lu, Shuo Liu, Wei Jin, Zonghu Han, and Yaohui Cao "Temperature-insensitive pressure or strain sensing technology with fiber optic hybrid Sagnac interferometer", Proc. SPIE 9852, Fiber Optic Sensors and Applications XIII, 985216 (12 May 2016); https://doi.org/10.1117/12.2223630

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