A novel MFBG pressure sensor based on the thin-wall strain cylinder with temperature compensation

Yang Liu; Rensheng Shen; Donghui Niu; Weiping Yan; Yushu Zhang; Guotong Du

doi:10.1117/12.823167

23 February 2009 A novel MFBG pressure sensor based on the thin-wall strain cylinder with temperature compensation

Yang Liu, Rensheng Shen, Donghui Niu, Weiping Yan, Yushu Zhang, Guotong Du

Proceedings Volume 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors; 727819 (2009) https://doi.org/10.1117/12.823167
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

A novel metal-coated fiber Bragg grating (MFBG) pressure sensor based on the thin-wall strain cylinder with temperature compensation was designed and fabricated. According to the elastic strain principle, the theoretical analysis of the strain distribution of this structure was described by calculation and simulation software Ansys. A sensing MFBG1 was soldered on the tangential direction on the exterior surface of the thin-wall strain cylinder, and another MFBG2 was soldered on the axial direction to compensate the effect of temperature. The experimental results indicated that the cross-sensitivity of pressure and temperature of this sensor can be self-compensated well by this method. In addition, the actual measurement pressure range from 0 to 42 MPa with a high pressure sensitivity coefficient of 0.0496 nm/MPa. Simultaneously, the measure range of pressure can be adjusted by changing the structure material and the geometry size of the sensor. This kind of sensor has potential applications in the sensing measurement at harsh environment.

Citation Download Citation

Yang Liu, Rensheng Shen, Donghui Niu, Weiping Yan, Yushu Zhang, and Guotong Du "A novel MFBG pressure sensor based on the thin-wall strain cylinder with temperature compensation", Proc. SPIE 7278, Photonics and Optoelectronics Meetings (POEM) 2008: Fiber Optic Communication and Sensors, 727819 (23 February 2009); https://doi.org/10.1117/12.823167

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