Simultaneous measurement of strain and curvature using superstructure fibre Bragg gratings

被引：28
作者：
Gwandu, BAL [1 ]
Shu, XW [1 ]
Liu, Y [1 ]
Zhang, W [1 ]
Zhang, L [1 ]
Bennion, I [1 ]
机构：
[1] Aston Univ, Photon Res Grp, Birmingham B4 7ET, W Midlands, England
来源：
SENSORS AND ACTUATORS A-PHYSICAL | 2002年 / 96卷 / 2-3期
基金：
英国工程与自然科学研究理事会;
关键词：
sampled fibre Bragg grating; strain and curvature sensing; smart structures;
D O I：
10.1016/S0924-4247(01)00782-8
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
We report the first demonstration of the simultaneous measurement of strain and curvature, with temperature compensation, using a single superstructure fibre Bragg grating (SFBG). The SFBG exhibits the properties of both the fibre Bragg grating (FBG) and the long period fibre grating (LPG) such that its spectral response facilitates strain measurement from the wavelength shift of the FBG-like characteristic, and independent measurement of curvature from the LPG-like mode-splitting characteristic. The dependence of the LPG mode-splitting on the mode order has also been investigated and utilised for the measurement of very small curvatures. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：133 / 139
页数：7
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