Feedback controlled single wavelength interrogation technique for miniature all-silica EFPI fibre optic pressure sensors

K. Bremer; E. Lewis; G. Leen; B. Moss; S. Lochmann; I. Mueller

doi:10.1117/12.866451

8 September 2010 Feedback controlled single wavelength interrogation technique for miniature all-silica EFPI fibre optic pressure sensors

K. Bremer, E. Lewis, G. Leen, B. Moss, S. Lochmann, I. Mueller

Author Affiliations +

Proceedings Volume 7653, Fourth European Workshop on Optical Fibre Sensors; 76532D (2010) https://doi.org/10.1117/12.866451
Event: (EWOFS'10) Fourth European Workshop on Optical Fibre Sensors, 2010, Porto, Portugal

Abstract

This paper proposes a novel technique to stabilise the output wavelength of a tuneable laser source to operate always in the linear range of a miniature all-silica Extrinsic Fabry-Perot Interferometric (EFPI) fibre optic pressure sensor. The technique is based on a fibre optic hybrid sensor, which consists of a miniature all-silica EFPI fibre optic pressure sensor with an incorporated in-Fibre Bragg Grating (FBG). The FBG temperature reference sensor is used as a feedback element to stabilise the output wavelength of a tuneable laser source. Therefore the novel interrogation technique allows high speed pressure measurements in high temperature environments.

Citation Download Citation

K. Bremer, E. Lewis, G. Leen, B. Moss, S. Lochmann, and I. Mueller "Feedback controlled single wavelength interrogation technique for miniature all-silica EFPI fibre optic pressure sensors", Proc. SPIE 7653, Fourth European Workshop on Optical Fibre Sensors, 76532D (8 September 2010); https://doi.org/10.1117/12.866451

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