High-sensitivity pressure sensor based on a fiber Bragg grating

Hao-Jan Sheng; Ming-Yue Fu; Tzu-Chiang Chen; Chia-Min Lin; Wen-Fung Liu; Sheau-Shong Bor

doi:10.1117/12.514684

8 March 2004 High-sensitivity pressure sensor based on a fiber Bragg grating

Hao-Jan Sheng, Ming-Yue Fu, Tzu-Chiang Chen, Chia-Min Lin, Wen-Fung Liu, Sheau-Shong Bor

Proceedings Volume 5272, Industrial and Highway Sensors Technology; (2004) https://doi.org/10.1117/12.514684
Event: Optical Technologies for Industrial, Environmental, and Biological Sensing, 2003, Providence, RI, United States

Abstract

An all-fiber pressure sensor based on a fiber Bragg grating with the pressure sensitivity of 2.2x10^-2 MPa^-1 has been demonstrated. The physical configuration includes a FBG encapsulated in a polymer-half-filled metal cylinder with its end bonded to the central of a round plate attached to the surface of polymer, and the Young’s modulus of the polymer is four orders lower than FBG. This cylinder has two opening on opposite side of the wall at the polymer part. Under the pressure environment, the polymer can be pressurized along one radial direction only, and responds an axial force acting on the round plate, producing an axial strain on FBG. With a nice linearity, this sensor should be applied potentially for the measurement of mediums pressure, liquid level and depth underwater.

Citation Download Citation

Hao-Jan Sheng, Ming-Yue Fu, Tzu-Chiang Chen, Chia-Min Lin, Wen-Fung Liu, and Sheau-Shong Bor "High-sensitivity pressure sensor based on a fiber Bragg grating", Proc. SPIE 5272, Industrial and Highway Sensors Technology, (8 March 2004); https://doi.org/10.1117/12.514684

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