TY - GEN
T1 - Fiber grating type dependence of temperature and strain coefficients and application to simultaneous temperature and strain measurement
AU - Shu, X.
AU - Liu, Y.
AU - Zhao, D.
AU - Gwandu, B.
AU - Floreani, F.
AU - Zhang, L.
AU - Bennion, I.
PY - 2002
Y1 - 2002
N2 - Although fiber Bragg gratings (FBGs) have been widely used as advanced optical sensors, the cross-sensitivity between temperature and strain has complicated independent measurement procedures for these two measurands. We report here, for the first time to our knowledge, the results of a systematic investigation of the dependence of both temperature and strain sensitivities on the grating type, including the well-known Type I, Type IIA, and a new type which we have designated Type IA, using both hydrogen-free and hydrogenated B/Ge codoped fibers. We have identified distinct sensitivity characteristics for each grating type, and we have utilised them to implement a novel dual-grating, dual-parameter sensor device with performance superior to that of previously reported grating-based structures.
AB - Although fiber Bragg gratings (FBGs) have been widely used as advanced optical sensors, the cross-sensitivity between temperature and strain has complicated independent measurement procedures for these two measurands. We report here, for the first time to our knowledge, the results of a systematic investigation of the dependence of both temperature and strain sensitivities on the grating type, including the well-known Type I, Type IIA, and a new type which we have designated Type IA, using both hydrogen-free and hydrogenated B/Ge codoped fibers. We have identified distinct sensitivity characteristics for each grating type, and we have utilised them to implement a novel dual-grating, dual-parameter sensor device with performance superior to that of previously reported grating-based structures.
UR - http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1000507
U2 - 10.1109/OFS.2002.1000507
DO - 10.1109/OFS.2002.1000507
M3 - Conference publication
SN - 0-7803-7289-1
VL - 1
SP - 83
EP - 86
BT - 15th Optical Fiber Sensors conference technical digest, 2002
PB - IEEE
T2 - 15th conference on Optical Fibre Sensors
Y2 - 10 May 2002
ER -