TY - GEN
T1 - Distributed salinity sensor based on Brillouin dynamic grating
AU - Teng, Lei
AU - Dong, Yongkang
N1 - Publisher Copyright:
© 2020 SPIE.
PY - 2020
Y1 - 2020
N2 - The distributed measurement of salinity is experimentally demonstrated by Brillouin dynamic grating (BDG) The position-resolved salinity change can be measured by mapping the birefringence change through the BDG, where the salinity altering can induce the swelling or shrinking actions of the PI coating through absorbing or releasing water. Four sensors with the coating thickness of 5 μm, 8 μm, 15 μm, and 20 μm were fabricated as demos to characterize the salinity sensitivity of the sensors, with 30.1 MHz/(mol/L) for 5 μm, 75.4 MHz/(mol/L) for 8 μm, 119.2 MHz/(mol/L) for 15 μm, and 139.6 MHz/(mol/L) for 20 μm, respectively. The proposed sensor shows a linear and reproducible response to the salinity change, and its measurement uncertainty is less than 10 MHz, corresponding to the obtained maximum salinity accuracy of 0.072 mol/L.
AB - The distributed measurement of salinity is experimentally demonstrated by Brillouin dynamic grating (BDG) The position-resolved salinity change can be measured by mapping the birefringence change through the BDG, where the salinity altering can induce the swelling or shrinking actions of the PI coating through absorbing or releasing water. Four sensors with the coating thickness of 5 μm, 8 μm, 15 μm, and 20 μm were fabricated as demos to characterize the salinity sensitivity of the sensors, with 30.1 MHz/(mol/L) for 5 μm, 75.4 MHz/(mol/L) for 8 μm, 119.2 MHz/(mol/L) for 15 μm, and 139.6 MHz/(mol/L) for 20 μm, respectively. The proposed sensor shows a linear and reproducible response to the salinity change, and its measurement uncertainty is less than 10 MHz, corresponding to the obtained maximum salinity accuracy of 0.072 mol/L.
KW - Brillouin dynamic grating
KW - Distributed measurement
KW - Optical sensor
KW - Polymer swelling
KW - Salinity sensor
UR - https://www.scopus.com/pages/publications/85082584923
U2 - 10.1117/12.2549955
DO - 10.1117/12.2549955
M3 - 会议稿件
AN - SCOPUS:85082584923
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - 2019 International Conference on Optical Instruments and Technology
A2 - Zhang, Xuping
A2 - Xiao, Hai
PB - SPIE
T2 - 2019 International Conference on Optical Instruments and Technology: Optical Sensor and Applications
Y2 - 26 October 2019 through 28 October 2019
ER -