Fiber Bragg grating deflection sensor

Ping Lu; Liqiu Men; Qiying Chen

doi:10.1117/12.806927

12 August 2008 Fiber Bragg grating deflection sensor

Ping Lu, Liqiu Men, Qiying Chen

Proceedings Volume 7099, Photonics North 2008; 709929 (2008) https://doi.org/10.1117/12.806927
Event: Photonics North 2008, 2008, Montréal, Canada

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.

Citation Download Citation

Ping Lu, Liqiu Men, and Qiying Chen "Fiber Bragg grating deflection sensor", Proc. SPIE 7099, Photonics North 2008, 709929 (12 August 2008); https://doi.org/10.1117/12.806927

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