Fiber grating type dependence of temperature and strain coefficients and application to simultaneous temperature and strain measurement

Shu, X., Liu, Y., Zhao, D., Gwandu, B., Floreani, F., Zhang, L. and Bennion, I. (2002). Fiber grating type dependence of temperature and strain coefficients and application to simultaneous temperature and strain measurement. IN: UNSPECIFIED IEEE.

Abstract

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.

Publication DOI: https://doi.org/10.1109/OFS.2002.1000507
Divisions: Engineering & Applied Sciences > Electrical, electronic & power engineering
Engineering & Applied Sciences > Institute of Photonics
Event Title: 15th conference on Optical Fibre Sensors
Event Type: Other
Event Dates: 2002-05-10
Full Text Link: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1000507
Related URLs:
Published Date: 2002
Authors: Shu, X.
Liu, Y.
Zhao, D.
Gwandu, B.
Floreani, F.
Zhang, L. ( 0000-0002-1691-5577)
Bennion, I.

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