Pressure and temperature discrimination based on dual-FBG written in microstructured fiber and standard fiber

Chuang Wu; Yang Zhang; Bai-Ou Guan

doi:10.1117/12.883777

18 May 2011 Pressure and temperature discrimination based on dual-FBG written in microstructured fiber and standard fiber

Chuang Wu, Yang Zhang, Bai-Ou Guan

Author Affiliations +

Proceedings Volume 7753, 21st International Conference on Optical Fiber Sensors; 775398 (2011) https://doi.org/10.1117/12.883777
Event: 21st International Conference on Optical Fibre Sensors (OFS21), 2011, Ottawa, Canada

Abstract

We experimentally demonstrate a novel fiber-optic pressure and temperature sensor using dual-FBG written in grapefruit microstructured fiber (GMF) and standard single-mode fiber (SMF). The pressure sensitivity of FBG in GMF is much larger than that of SMF because the large air holes in the cross section of GMF make it experience larger axial strain than SMF in the presence of hydrostatic pressure. While the temperature responses of the two FBGs are almost the same due to the similar material composition in the fiber cores. Hence, pressure and temperature can be simultaneously determined.

Citation Download Citation

Chuang Wu, Yang Zhang, and Bai-Ou Guan "Pressure and temperature discrimination based on dual-FBG written in microstructured fiber and standard fiber", Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 775398 (18 May 2011); https://doi.org/10.1117/12.883777

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