Biaxial fiber Bragg grating accelerometer using axial and transverse forces

Li, Kuo, Chan, Tommy H.T., Yau, Man Hong, Thambiratnam, David P., & Tam, Hwa Yaw (2014) Biaxial fiber Bragg grating accelerometer using axial and transverse forces. Photonics Technology Letters, IEEE, 26(15), pp. 1549-1552.

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Abstract

We demonstrate the first biaxial fiber Bragg grating (FBG) accelerometer using axial and transverse forces. An inertial object is fixed at the middle of two FBGs inscribed in one fiber. The difference between the resonant wavelengths of the two FBGs can distinguish the acceleration in the axial direction, while being insensitive in the transverse direction. The average of the resonant wavelengths of the two FBGs can distinguish the acceleration in the transverse direction, while being insensitive in the axial direction. In the experiments, when the transverse direction was vertical, the crest-to-trough sensitivity at 5 Hz and resonant frequency of the average were 0.545 nm/g and 34.42 Hz, respectively. When the axial direction was vertical, those of the difference were 0.0454 nm/g and 900 Hz, respectively. For each FBG, the crest-to-trough sensitivity at 5 Hz and resonant frequency in the transverse/vertical direction were 24 and 1/26 times those in the axial/vertical direction, respectively.

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3 citations in Web of Science®

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ID Code: 74124
Item Type: Journal Article
Refereed: Yes
DOI: 10.1109/LPT.2014.2329009
ISSN: 1041-1135
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Past > QUT Faculties & Divisions > Faculty of Science and Technology
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2014 IEEE
Deposited On: 17 Jul 2014 23:10
Last Modified: 20 Jul 2014 22:44

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