Temperature-Insensitive 2-D Pendulum Clinometer Using Two Fiber Bragg Gratings

被引：33
|
作者：
Bao, Hualong [1 ]
Dong, Xinyong [1 ]
Shao, Li-Yang [1 ]
Zhao, Chun-Liu [1 ]
Chan, C. C. [2 ]
Shum, P. [3 ]
机构：
[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China
[2] Nanyang Technol Univ, Sch Chem & Biomed Engn, Singapore 637457, Singapore
[3] Nanyang Technol Univ, Network Technol Res Ctr, Singapore 637553, Singapore
来源：
IEEE PHOTONICS TECHNOLOGY LETTERS | 2010年 / 22卷 / 12期
基金：
中国国家自然科学基金;
关键词：
Clinometer; fiber Bragg gratings (FBGs); fiber-optic sensors; temperature-insensitive; TILT SENSOR; STRAIN;
D O I：
10.1109/LPT.2010.2046630
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：
A novel two-dimensional (2-D) clinometer has been demonstrated by attaching two fiber Bragg gratings (FBGs) on a deliberately designed pendulum composed of a tapered cylindrical beam and a mass. Due to the nonuniform tilt-induced strain field applied along the length of the FBGs, the bandwidths of their reflection spectra vary linearly with the applied inclination. By monitoring the reflected optical powers of the two FBGs, temperature-independent measurement of 2-D tilt angle is realized. In the experiment, a high sensitivity of 1.96 mu W/degree over the inclination range from -4 degrees to 4 degrees is achieved, and the accuracy for tilt angle measurement is +/- 0.125 degrees.
引用
收藏
页码：863 / 865
页数：3
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