基于光纤拉力传感器测量液体表面张力系数  

Measuring liquid surface tension coefficient based on optical fiber tension sensor

作　　者：王本阳 毛晓芹 刘一 曲文葛 王新顺 郎昌鹏 WANG Ben-yang;MAO Xiao-qin;LIU Yi;QU Wen-ge;WANG Xin-shun;LANG Chang-peng(Department of Optoelectronic Science,School of Science,Harbin Institute of Technology,Weihai 264209,China)

机构地区：[1]哈尔滨工业大学(威海)理学院光电科学系,山东威海264209

出　　处：《物理实验》2020年第7期16-18,共3页Physics Experimentation

基　　金：哈尔滨工业大学(威海)校内基金项目(No.ITGA10002114);山东省基金项目(No.B2016M020)。

摘　　要：基于法布里-珀罗干涉型拉力传感器,利用拉脱法测量了液体表面张力系数.设计制备出的光纤拉力传感器结合单频激光器、光纤环形器、光电探测器可使输出电压和拉力成正比,其灵敏度约为64.5 mV/N.利用其测量室温下水的液体表面张力系数(0.076±0.001)N/m,相对偏差为4.1%.Based on Fabry-Perot(F-P)interference type tension sensor,the liquid surface tension coefficient was measured by the pull-off method.The designed optical fiber tension sensor combined with single frequency laser,fiber circulator,and photodetector could make the output voltage proportional to the pulling force,and its sensitivity was about 64.5 mV/N.The relative error of the measured liquid surface tension coefficient of water at room temperature was 4.1%.

关 键 词：液体表面张力系数 光纤 拉力传感器 拉脱法 

分 类 号：O451.1[理学—无线电物理]