Temperature-insensitive 2D Tilt Sensor with Two Chirped Fiber Bragg Gratings

被引：1

作者：

Hu, Limin ^{[1
]}

Dong, Xinyong ^{[1
]}

Zhang, Shuqin ^{[1
]}

Jin, Shangzhong ^{[1
]}

Chan, C. C. ^{[2
]}

机构：

[1] China Jiliang Univ, Inst Optoelect Technol, Hangzhou 310018, Zhejiang, Peoples R China

[2] Nanyang Technol Univ, Network Technol Res Ctr, Singapore 637553, Singapore

来源：

21ST INTERNATIONAL CONFERENCE ON OPTICAL FIBER SENSORS | 2011年 / 7753卷

基金：

中国国家自然科学基金;

关键词：

Chirped fiber Bragg gratings; tilt sensors; temperature-insensitive; intensity-modulated;

D O I：

10.1117/12.884916

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A novel temperature-insensitive tilt sensor is proposed by embedding two chirped fiber Bragg gratings (CFBGs) into a cylindrical cantilever-based pendulum in two orthogonal planes. Due to the tilt-induced nonuniform strain field applied along the length of the CFBGs, their bandwidths of reflection spectra vary with the applied tilt angle. By measuring the reflected optical powers of the two CFBGs illuminated by a flattened broadband light source, temperature-insensitive measurement of both inclination angle and direction in two dimensions can be realized. Theoretical calculations and preliminary experimental results verified the feasibility of the proposed sensor design. The measurement is in real-time manner and the sensor is cost-efficient because it is an intensity-modulated sensor.

引用

页数：4

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