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Proceedings Paper

Simultaneous measurement of bending curvature and axial stress using D-shaped fiber Bragg gratings
Author(s): Chuen-Lin Tien; Tzu-Chung Cheng; Li-Chieh Chen; Gui-Ru Lin; Wen-Feng Liu
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Paper Abstract

Simultaneous measurement of the bending curvature and axial stress by using dual fiber Bragg gratings and a sidepolished technique is presented. Curvature measurement, using side-polished fiber Bragg gratings with different thicknesses ranging from 93.94 to 70.66 μm shows corresponding sensitivities from 0.096 to 0.402 nm/m-1 for bending curvatures in the range of 0 - 3 m-1. The simultaneous axial stress is measured based on the shift in the Bragg wavelength and ranges from 0.008 - 0.128 GPa. A maximum sensitivity of 13.83 nm/GPa is demonstrated.

Paper Details

Date Published: 23 November 2009
PDF: 6 pages
Proc. SPIE 7508, 2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications, 75081H (23 November 2009); doi: 10.1117/12.838187
Show Author Affiliations
Chuen-Lin Tien, Feng-Chia Univ. (Taiwan)
Tzu-Chung Cheng, Feng-Chia Univ. (Taiwan)
Li-Chieh Chen, Feng-Chia Univ. (Taiwan)
Gui-Ru Lin, Feng-Chia Univ. (Taiwan)
Wen-Feng Liu, Feng-Chia Univ. (Taiwan)


Published in SPIE Proceedings Vol. 7508:
2009 International Conference on Optical Instruments and Technology: Advanced Sensor Technologies and Applications
YanBiao Liao; Anbo Wang; Tingyun Wang; Yukihiro Ishii, Editor(s)

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