Title :
Simultaneous measurement of strain, temperature and curvature using a sampled fibre Bragg grating
Author :
Gwandu, B.A.L. ; Shu, X.W. ; Liu, Y. ; Zhang, W. ; Zhang, L. ; Bennion, I.
Author_Institution :
Photonics Res. Group, Aston Univ., Birmingham, UK
Abstract :
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.
Keywords :
Bragg gratings; curvature measurement; fibre optic sensors; strain sensors; temperature sensors; curvature measurement; fibre optic sensor; strain measurement; superstructured fibre Bragg grating; temperature measurement; Bragg gratings; Capacitive sensors; Fiber gratings; Frequency; Optical fibers; Resonance; Strain measurement; Temperature measurement; Temperature sensors; Wavelength measurement;
Conference_Titel :
Optical Fiber Sensors Conference Technical Digest, 2002. Ofs 2002, 15th
Conference_Location :
Portland, OR, USA
Print_ISBN :
0-7803-7289-1
DOI :
10.1109/OFS.2002.1000506
