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Proceedings Paper

Fiber Bragg grating deflection sensor
Author(s): Ping Lu; Liqiu Men; Qiying Chen
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Paper Abstract

A new fiber-optic sensor system consisting of a fiber Bragg grating (FBG) cantilever as a transducer is proposed and demonstrated to realize simultaneous measurement of magnitude and direction of deflection. For the FBG mounted on a stainless steel cantilever, a change in the bending deflection gives rise to a monotonous shift in the Bragg resonance wavelength of the grating while the deflection direction results in either a red- or blue-shift in the Bragg wavelength due to a stretched or shrunk state of the grating. As an application of this deflection sensor, the water flow rate was measured, which showed good agreement with the theoretical analysis.

Paper Details

Date Published: 12 August 2008
PDF: 7 pages
Proc. SPIE 7099, Photonics North 2008, 709929 (12 August 2008); doi: 10.1117/12.806927
Show Author Affiliations
Ping Lu, Memorial Univ. of Newfoundland (Canada)
Liqiu Men, Memorial Univ. of Newfoundland (Canada)
Qiying Chen, Memorial Univ. of Newfoundland (Canada)


Published in SPIE Proceedings Vol. 7099:
Photonics North 2008

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