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Fibre grating pressure sensor with enhanced sensitivity using a glass-bubble housing

1996; Institution of Engineering and Technology; Volume: 32; Issue: 2 Linguagem: Inglês

10.1049/el

1350-911X

M.G. Xu, H. Geiger, J.P. Dakin,

Advanced MEMS and NEMS Technologies

A fibre Bragg grating pressure sensor with enhanced sensitivity has been demonstrated, using a grating housed in a glass bubble. This configuration increases the pressure sensitivity and effectively reduces the thermal crosstalk by a factor of 4. A pressure resolution of 0.5% over a full measurement range of 14 MPa has been achieved. This concept could lead to a range of sensors using fibre gratings with mechanical amplifiers to enhance sensitivity.