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Hydrostatic pressure sensor based on gold-jacketed spherical end hollow-core photonic bandgap fibre

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3 Author(s)
Chen, D. ; Inst. of Inf. Opt., Zhejiang Normal Univ., Jinhua, China ; Cheng, X. ; Tam, H.Y.

A hydrostatic pressure sensor based on a spherical end hollow-core photonic bandgap fibre with a length of several hundreds of micrometres is proposed. The pressure sensor head fabricated by a splicer is a micro-Michelson interferometer sensitive to the pressure due to the photoelastic effect. An experimental setup of the proposed hydrostatic pressure sensor is conducted and a linear relationship between the hydrostatic pressure and the wavelength shift of the relative reflection spectrum of the pressure sensor is presented. The pressure sensor demonstrated with a measurement range larger than 40 MPa and a sensitivity of -6.5 pm/MPa.

Published in:

Electronics Letters  (Volume:48 ,  Issue: 19 )