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Proceedings Paper

Temperature-insensitive 2D tilt sensor with two chirped fiber Bragg gratings
Author(s): Limin Hu; Xinyong Dong; Shuqin Zhang; Shangzhong Jin; Chi-Chiu Chan
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Paper Abstract

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.

Paper Details

Date Published: 18 May 2011
PDF: 4 pages
Proc. SPIE 7753, 21st International Conference on Optical Fiber Sensors, 77538M (18 May 2011); doi: 10.1117/12.884916
Show Author Affiliations
Limin Hu, China Jiliang Univ. (China)
Xinyong Dong, China Jiliang Univ. (China)
Shuqin Zhang, China Jiliang Univ. (China)
Shangzhong Jin, China Jiliang Univ. (China)
Chi-Chiu Chan, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 7753:
21st International Conference on Optical Fiber Sensors
Jacques Albert; Wojtek J. Bock, Editor(s)

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