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Proceedings Paper

Study on the sensing performance of OFBG under large-scale negative strain
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Paper Abstract

As a new and sensitive sensing element, OFBG(Optical Fiber Bragg Grating) has been widely used in aerospace engineering and civil engineering. The sensing mechanism and properties have been widely studied by lots of researchers, but the sensing properties of OFBG under large negative strain are still destitute. In this paper, with the aids of large shrinkage performance of PP(polypropylene) during its curing, we gained about -13000 με's strain changes by embeding bare OFBG inside the PP bar to study the sensing properties of OFBG in this strain level. The results show that OFBG can remain its sensing properties well---- linearity, repeatability and the shape of centre wavelength are both reasonably. And the strain sensitivity coefficient of PP-OFBG is about 0.85 pm/με, this is very near with that of calculating results considering strain transmission between PP and OFBG. Which are all helpful and useful for further use of OFBG in other applications.

Paper Details

Date Published: 8 April 2010
PDF: 5 pages
Proc. SPIE 7648, Smart Sensor Phenomena, Technology, Networks, and Systems 2010, 764816 (8 April 2010); doi: 10.1117/12.847418
Show Author Affiliations
Chuan Wang, Harbin Institute of Technology (China)
Qingli Hu, Harbin Institute of Technology (China)
Jinping Ou, Harbin Institute of Technology (China)
Dalian Univ. of Technology (China)

Published in SPIE Proceedings Vol. 7648:
Smart Sensor Phenomena, Technology, Networks, and Systems 2010
Kara J. Peters; Wolfgang Ecke; Theodore E. Matikas, Editor(s)

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