%A YANG Zhenqing, CAI Miaoyu, LIU Ya, XIN Yuhao, YANG Ren, WANG Ziyue, CHEN Shaohua %T Measurement of Transparent Liquid Concentration BasedOncascaded Long-Period Fiber Grating %0 Journal Article %D 2023 %J Physical Experiment of College %R 10.14139/j.cnki.cn22-1228.2023.02.003 %P 10-14 %V 36 %N 2 %U {https://dawushiyan.jlict.edu.cn/CN/abstract/article_1767.shtml} %8 2023-04-25 %X

The transparent liquid concentration is measured using the cascade long period fiber grating.Thegrating is fully immersed in the liquid tank ,and the effect of the liquid concentration on the resonance waves ofthe cascade fiber grating is investigated by injecting solutions of different concentrations into the liquid tank.Weshow a linear relationship between the resonant wave offset and the solution concentration.Therefore ,the liquidunknown concentration can be calculated by the resonant wave offset, Thus, the liquid concentration ismeasured.The experiment is easy to operate and convenient to measure ,which is suitable for popularization andapplication in modern university physics experiment teaching.