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Proceedings Paper

Temperature insensitive accelerometer based on a strain-chirped FBG
Author(s): Wenjun Zhou; Xinyong Dong; Kai Ni; C. C. Chan; P. Shum
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Paper Abstract

A novel accelerometer based on a strain-chirped optical fiber Bragg grating (FBG) is proposed. The FBG is glued in a slanted direction onto the lateral side of a right-angled triangle cantilever beam with a mass bonded on its free end. Vertical acceleration applied to the cantilever beam leads to a uniform bending along the beam length. As a result, the FBG is chirped and its reflection bandwidth changes linearly with the applied acceleration. A high sensitivity of 0.684 nm/g has been achieved in the experiment. This sensor is temperature insensitive, owning to the temperatureindependence nature of reflection bandwidth of the FBG.

Paper Details

Date Published: 5 October 2009
PDF: 4 pages
Proc. SPIE 7503, 20th International Conference on Optical Fibre Sensors, 75033R (5 October 2009); doi: 10.1117/12.835387
Show Author Affiliations
Wenjun Zhou, China Jiliang Univ. (China)
Xinyong Dong, China Jiliang Univ. (China)
Kai Ni, China Jiliang Univ. (China)
C. C. Chan, Nanyang Technological Univ. (Singapore)
P. Shum, Nanyang Technological Univ. (Singapore)


Published in SPIE Proceedings Vol. 7503:
20th International Conference on Optical Fibre Sensors

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