利用光纤F-P干涉仪对金属线胀系数的测量  

The Measurement of the Coefficient of Linear Expansion of Mental Based on Fabry Perot(F-P) Interferometer

作　　者：刘晓颀 张颖[1] 王艳芳[1] 高艺[1] 宋立红 Liu Xiaoqi;Zhang Ying;Wang Yanfang;Gao Yi;Song Lihong(Nankai University,Tianjin,300350,China;Tianjin Qicheng Science&Technology Co.Ltd.Tianjin,300193,China)

机构地区：[1]南开大学,天津300350 [2]天津启诚伟业科技有限公司,天津300193

出　　处：《中国现代教育装备》2022年第11期65-67,共3页China Modern Educational Equipment

基　　金：国家自然科学基金青年项目“具有多维可控立体通道光微流生化传感器机理与实现研究”(编号:11804171);中国博士后科学基金“选择性填充微结构光纤光流耦合机理及低折射率传感应用”(编号:2015M581290);南开大学自制实验教学仪器设备项目“利用光纤F-P传感器对固体线胀系数测量仪器实验装置的改制”(编号:2018NKZZYQ04)。

摘　　要：设计了一种基于光纤F-P干涉仪的金属线胀系数测量装置,解决了目前实验教学中存在的创新性不足、安全隐患大、测量精度低、仪器笨重等诸多问题。利用光纤F-P干涉仪的高灵敏度在室温范围内对金属线胀系数进行了测试,在温度从室温30℃升高到37℃的过程中,光纤F-P干涉仪的条纹移动速度为3.25 nm/℃。同时实验装置由于升降温速度快,结构小巧,在短时间内可以实现对多种金属线胀系数的测量。学生可以自主设计光纤F-P干涉仪结构,将其作为常规金属线胀系数测量实验的拓展实验或创新设计实验。We designed a new kind of Fabry Perot (F-P) interferometer to measure the coefficient of linear expansion of mental.It has many merits such as full of innovation,higher security and measurement accuracy,smaller size and so on.In the experiment,we use the F-P interferometer to measure the coefficient of linear expansion of stainless mental.It can find that the interference dip moves to shorter wavelength,and the movement speed is about 3.25 nm/℃.At the same time,this kind of instrument has the ability of cooling,therefore,the inside temperature of the instrument can decrease to the room temperature to measure other metals.Moreover,the students can design the interferometer by themselves.This experiment can be used as the extension experiment or innovative experiment of the metal linear expansion coefficient experiment.

关 键 词：金属线胀系数 光纤F-P干涉仪 光学光纤 

分 类 号：TG115-4[金属学及工艺—物理冶金] G642[金属学及工艺—金属学]