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Proceedings Paper

Fiber Bragg grating sensors written by femtosecond laser pulses in micro-structured fiber for downhole pressure monitoring
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Paper Abstract

In this paper, we demonstrate that femtosecond laser pulse written fiber Bragg gratings (FBGs) fabricated in specialty highly birefringent micro-structured optical fiber (MSF) can be used for high pressure and high temperature monitoring in downhole applications. The design of the micro-structure allows encoding the pressure information into the spectral separation between the two Bragg peaks reflected by the obtained MS-FBG. We obtained a differential pressure sensitivity of 3.30 pm/bar over a pressure range from atmospheric up to 1400 bar and at temperatures between 40 °C and 290 °C. Owing to the negligible differential pressure-temperature cross-sensitivity of 6.06E-3 bar/°C, the proposed MSFBG sensor is an ideal candidate for pressure monitoring in the presence of high temperature transients.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103233D (23 April 2017); doi: 10.1117/12.2264996
Show Author Affiliations
J.-Y. Huang, Univ. de Mons (Belgium)
FBGS International NV (Belgium)
J. Van Roosbroeck, FBGS International NV (Belgium)
A. Bueno Martinez, Univ. de Mons (Belgium)
T. Geernaert, Vrije Univ. Brussel (Belgium)
F. Berghmans, Vrije Univ. Brussel (Belgium)
C. Caucheteur, Univ. de Mons (Belgium)
B. Van Hoe, FBGS International NV (Belgium)
E. Lindner, FBGS International NV (Belgium)
J. Vlekken, FBGS International NV (Belgium)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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