摘要
设计了一种面向本科生教学用的功能型光纤温度和压力传感实验系统,将650nm的半导体激光经分束镜分成两束,然后将两束光分别经透镜耦合到两根光纤中,其中一根光纤绕在压电陶瓷管上,另一根光纤绕在一个温度可控的加热盒中,最后将两根光纤的输出端紧靠在一起,形成双光纤干涉系统.通过测量不同压力和温度变化所引起的干涉环的移动数,建立温度和压力与干涉条纹数之间的对应关系,实现对光纤温度传感和压力传感原理的演示.该系统具有结构简单,成本较低,操作方便等优点,通过学生自行搭建实验系统,能有效提高学生的实验动手能力和对理论知识的掌握水平,适用于高等学校光电信息科学与工程专业及相近专业开展光纤温度传感和光纤压力传感方面的实验教学.
A fiber temperature and pressure sensing system for undergraduate teaching is designed,a diode laser with 650 nm is used as light source,and the output is divided into two beams by a beam splitter,which are thencoupled into two fibers by a lens,one of the fiber is wound around a PZT tube,and the other fiber by making theshape of a torus is put in a temperature controlled box,the ends of the two fibers are closely coupled to form adouble fiber interference system. By measuring the movement of the interference ring caused by pressure and temperature changes,the relation between the change of the temperature and pressure and the fringe number is established. The experimental system has advantages of simple structure,low cost and easy operation and so on,the system can be set up by the students themselves,and it can effectively improve students′ experimental ability and mastery of theoretical knowledge,and it is suitable for experimental teaching of optical fiber temperature sensing andoptical fiber pressure sensing in photoelectric information science and engineering specialty and similar specialty inuniversities.
作者
裴世鑫
崔芬萍
谢欣桐
PEI Shixin;CUI Fenping;XIE Xintong(School Physics ＆ Optoelectronic Engineering,Nanjing University of Information Science ＆ Technology,Nanjing,Jiangsu 210044,China)
出处
《大学物理》
2018年第5期52-56,共5页
College Physics
基金
南京信息工程大学2016年实验室开放项目(教师主导类)资助
关键词
传感器
双光纤
温度
压力
实验教学
sensor
double optical fiber
temperature
pressure
experiment teaching
