Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24619
Title: Biaxial fiber Bragg grating accelerometer using axial and transverse forces
Authors: Li, K
Chan, THT
Yau, MH
Thambiratnam, DP
Tam, HY 
Keywords: Accelerometer
Fiber Bragg grating
Optical fiber sensor
Issue Date: 2014
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE photonics technology letters, 2014, v. 26, no. 15, 6826538, p. 1549-1552 How to cite?
Journal: IEEE photonics technology letters 
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.
URI: http://hdl.handle.net/10397/24619
ISSN: 1041-1135
EISSN: 1941-0174
DOI: 10.1109/LPT.2014.2329009
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