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Simultaneous measurement of strain, temperature and curvature using a sampled fibre Bragg grating

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6 Author(s)
B. A. L. Gwandu ; Photonics Res. Group, Aston Univ., Birmingham, UK ; X. W. Shu ; Y. Liu ; W. Zhang
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We have shown that a single superstructured fibre Bragg grating (SFBG) can be used to provide simultaneous measurements of strain, temperature, and curvature. The spectral splitting of the SFBG loss bands facilitates measurement of the curvature, whilst the wavelength shift of the FBG harmonics and that of the midpoint between the split bands provides for determination of the axial strain. and temperature.

Published in:

Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th

Date of Conference:

10-10 May 2002