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A novel temperature-insensitive optical fiber pressure sensor for harsh environments

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6 Author(s)
Juncheng Xu ; Dept. of Electr. & Comput. Eng., State Univ., Blacksburg, VA, USA ; G. Pickrell ; Xingwei Wang ; Wei Peng
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A novel diaphragm-based miniature optical fiber pressure sensor has been shown to work at temperatures up to 700°C with a sensitivity of 2.93 nm/psi and a resolution of 0.01 psi (68.9 Pa). A passive temperature compensation scheme was used to reduce the temperature dependence to 0.0076 psi/°C (52.4 Pa/°C). The sensor exhibited a linear response in the available testing range from 0 to 200 psi (1.38 MPa), and being composed entirely of fused silica, the sensor's structure is very reliable, corrosion resistant, and immune to electromagnetic interference.

Published in:

IEEE Photonics Technology Letters  (Volume:17 ,  Issue: 4 )