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DOI: 10.17586/1023-5086-2023-90-09-73-81
УДК: 535
Design and simulation of a fiber sensing system for metal ion detection based on side-polished fiber and coated fiber grating
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Publication in Journal of Optical Technology
Guo J.Q., Zhou Yа.F., Liu Yu, Wang C.L., Zhen W.Yu., Jiang J.L., Ji H.Y., Chen X.Yu, Li R.P. Design and simulation of a fiber sensing system for metal ion detection based on side-polished fiber and coated fiber grating (Моделирование и проектирование волоконной сенсорной системы для обнаружения ионов металлов на основе оптического волокна с боковой полировкой и волоконной решетки с покрытием) [на англ. яз.] // Оптический журнал. 2023. Т. 90. № 9. С. 82–90. http://doi.org/10.17586/1023-5086-2023-90-09-82-90
Guo J.Q., Zhou Yа.F., Liu Yu, Wang C.L., Zhen W.Yu., Jiang J.L., Ji H.Y., Chen X.Yu, Li R.P. Design and simulation of a fiber sensing system for metal ion detection based on side-polished fiber and coated fiber grating [in English] // Opticheskii Zhurnal. 2023. V. 90. № 9. P. 82–90. http://doi.org/10.17586/1023-5086-2023-90-09-82-90
Subject of study. A fluid metal ion detection device is designed to solve the issue of heavy metal water quality detection in real life, which is used by a fusion of a side-throw fiber-assisted fluid structure and a long-period fiber grating coated with a metal chelator film. The aim of the work is to design of a fiber-optic fluid system for the simultaneous qualitative and quantitative analysis of metal ions in a liquid. Method. The refractive index bands of common contaminated water sources are selected for the numerical simulation of metal ion species and concentration sensing characteristics. Main results. The results show that the interference wavelength is red-shifted with the increase of the filled fluid concentration. Its refractive index sensing sensitivity is calculated to be about 3343.33 nm/RIU. Meanwhile, when the refractive index of long-period fiber grating film layer increases from 1.2 to 1.44, the loss peak decreases by a total of 6.011 dB, and thus the ion species can be identified. Practical significance. Therefore, this sensing system offers the possibility of real-time detection of fluid ion orientation.
optofluidic system, optical fiber sensing, microstructured optical fiber, metal ion detection
Acknowledgements:the work was funded by the National Natural Science Foundation of China (61705027, 62005033, and 52175531), Chongqing Science and Technology Commission Basic Research Project (CSTC-2020jcyj-msxm0603), Chongqing Municipal Education Commission Science and Technology Research Program (KJQN202000609).
OCIS codes: 060.2370
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