Infrared and Laser Engineering, Volume. 45, Issue 8, 802002(2016)
Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer
The transmission spectrum characteristic of two-segment polarization maintaining fibers Sagnac interferometer was investigated and simulated in detail and the optimal parameters for eliminating the crosstalk between the two polarization maintaining fibers was obtained. A temperature-insensitive pressure sensing technology was proposed. An experimental Sagnac interferometer was built and the solid core polarization maintaining photonic crystal fibers were 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 about 0.287 7 nm/N and the temperature drift was less than 0.1 pm/℃.
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Yang Yuanhong, Liu Shuo, Lu Lin, Jin Wei. Temperature-insensitive pressure sensing technology based on polarization maintaining photonic crystal fiber Sagnac interferometer[J]. Infrared and Laser Engineering, 2016, 45(8): 802002
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Received: Aug. 5, 2016
Accepted: Aug. 19, 2016
Published Online: Aug. 29, 2016
The Author Email: Yuanhong Yang (yhyang@buaa.edu.cn)