23 April 2017 Distributed hydrostatic pressure sensor using a thin-diameter and polarization-maintaining photonics crystal fiber based on Brillouin dynamic gratings
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 103236Q (2017) https://doi.org/10.1117/12.2263938
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
A distributed hydrostatic pressure sensor based on Brillouin dynamic gratings (BDGs) was proposed and demonstrated for the first time to the best of our knowledge. Through measuring the pressure-induced birefringence changes through exciting and probing the BDGs, the hydrostatic pressure sensing is realized. The thin-diameter PM-PCF is used as the fiber under test. The temperature can be compensated by measuring the temperature-induced Brillouin frequency shift (BFS) through differential pulse-width pair Brillouin optical time-domain analysis (DPP-BOTDA). A distributed measurement is reported with a 20-cm spatial resolution and measurement accuracy as high as 0.025 MPa.
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Lei Teng, Yongkang Dong, Dengwang Zhou, Xiaoyi Bao, Liang Chen, "Distributed hydrostatic pressure sensor using a thin-diameter and polarization-maintaining photonics crystal fiber based on Brillouin dynamic gratings", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103236Q (23 April 2017); doi: 10.1117/12.2263938; https://doi.org/10.1117/12.2263938
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