Use of dual-grating sensors formed by different types of fiber Bragg gratings for simultaneous temperature and strain measurements

被引：31

作者：

Shu, XW ^{[1
]}

Zhao, DH ^{[1
]}

Zhang, L ^{[1
]}

Bennion, I ^{[1
]}

机构：

[1] Aston Univ, Photon Res Grp, Birmingham B4 7ET, W Midlands, England

来源：

APPLIED OPTICS | 2004年 / 43卷 / 10期

关键词：

All Open Access; Green;

D O I：

10.1364/AO.43.002006

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on a systematic investigation of the dependence of both temperature and strain sensitivities on the fiber Bragg grating type, including the well-known Type I, Type IIA, and a new type that we have designated Type IA, using both hydrogen-free and hydrogenated B/Ge codoped fibres. We have identified distinct sensitivity characteristics for each grating type, and we have used them to implement a novel dual-grating, dual-parameter sensor device. Three dual-grating sensing schemes with different combinations of grating type have been constructed and compared, and that of a Type IA-Type IIA combination exhibits the best performance, which is also superior to that of previously reported grating-based structures. The characteristics of the measurement errors in such dual-grating sensor systems is also presented in detail. (C) 2004 Optical Society of America.

引用

页码：2006 / 2012

页数：7

共 12 条

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