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Proceedings Paper

Simultaneous measurement of temperature and bend by using an eccentric core fiber Bragg grating cascaded with a Fabry-Perot cavity
Author(s): Yang Ouyang; Jing Kong; Yimin Xu; Ai Zhou; Libo Yuan
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Paper Abstract

A simultaneous temperature and bend sensor based on an eccentric core fiber Bragg grating (ECFBG) cascaded with a Fabry-Perot cavity is presented and demonstrated. The hybrid structure is composed of a piece of hollow core fiber, which is sandwiched in between a piece of multimode fiber and an ECFBG. The curvature sensitivities of the ECFBG at the two opposite most sensitive directions are 52.2 pm/m-1 and -51.7 pm/m-1 respectively, and those of the FPI are 58.6pm/m-1 and -61.4 pm/m-1, respectively. The temperature sensitivities of the two parts are very different. The temperature sensitivity of the ECFBG is 10.3 pm/°c, and that of the FPI is as low as 0.7 pm/°c.

Paper Details

Date Published: 23 April 2017
PDF: 4 pages
Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032375 (23 April 2017); doi: 10.1117/12.2264894
Show Author Affiliations
Yang Ouyang, Wuhan Univ. of Technology (China)
Jing Kong, Harbin Engineering Univ. (China)
Heilongjiang Institute of Technology (China)
Yimin Xu, Wuhan Univ. of Technology (China)
Ai Zhou, Wuhan Univ. of Technology (China)
Libo Yuan, Harbin Engineering Univ. (China)

Published in SPIE Proceedings Vol. 10323:
25th International Conference on Optical Fiber Sensors
Youngjoo Chung; Wei Jin; Byoungho Lee; John Canning; Kentaro Nakamura; Libo Yuan, Editor(s)

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