TY - JOUR
T1 - Fiber sensing scanner system based on A-thermal fiber bragg gratings
AU - Lo, Yu Lung
AU - Tsai, Tsung Hen
AU - Shih, Pin Fan
N1 - Funding Information:
The financial support provided to this study by the Ministry of Science and Technology of Taiwan under Grant No. MOST 103-2622-E-006 -008 -CC2 and MOST 102-2622-E-006 -021-CC2 are gratefully acknowledged.
Publisher Copyright:
© 2016 Elsevier B.V. All rights reserved.
PY - 2016/5/1
Y1 - 2016/5/1
N2 - This study is to achieve a new interrogation system for fiber Bragg grating (FBG) sensors, wavelength demodulation is commonly performed using a Fabry-Pérot (FP) scanner. However, for the thermal effects to a FP scanner, using a single A-thermal FBG as the reference to extract the correct sequence index and position of FBG sensors is introduced. In addition, a third-order polynomial curve fitting function is used to account for the nonlinear relationship between the FP driving voltage and the FP transmission wavelength. To enhance the accuracy of the FP scanning system, an additional interrogation structure based on four A-thermal reference FBGs is also proposed and the proposed interrogation system can accurately extract the Bragg wavelength down to 7.2 pm. Also, the performance of a FP scanning system with a high-end or low-end FP scanner is discussed.
AB - This study is to achieve a new interrogation system for fiber Bragg grating (FBG) sensors, wavelength demodulation is commonly performed using a Fabry-Pérot (FP) scanner. However, for the thermal effects to a FP scanner, using a single A-thermal FBG as the reference to extract the correct sequence index and position of FBG sensors is introduced. In addition, a third-order polynomial curve fitting function is used to account for the nonlinear relationship between the FP driving voltage and the FP transmission wavelength. To enhance the accuracy of the FP scanning system, an additional interrogation structure based on four A-thermal reference FBGs is also proposed and the proposed interrogation system can accurately extract the Bragg wavelength down to 7.2 pm. Also, the performance of a FP scanning system with a high-end or low-end FP scanner is discussed.
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U2 - 10.1016/j.sna.2016.02.027
DO - 10.1016/j.sna.2016.02.027
M3 - Article
AN - SCOPUS:84959432590
SN - 0924-4247
VL - 242
SP - 32
EP - 42
JO - Sensors and Actuators A: Physical
JF - Sensors and Actuators A: Physical
ER -