光纤光栅温度应力传感教学实验装置

Teaching Experimental Device of Fiber Bragg Grating Temperature Stress Sensing

针对目前市场上可直接用于光纤光栅传感实验教学的装置较少,前沿科研技术和本科实验教学相脱节现状,设计了基于光纤光栅的温度应力传感教学装置。该装置包括光纤激光器、光谱仪和上位机控制软件3部分。光纤激光器实现了1 550 nm左右的激光输出,利用光谱仪测量光纤光栅中心波长的改变,并采集数据输入计算机,上位机控制软件用于图形显示和数据存储等。该实验装置操作简单、组装灵活、重复性和稳定性好,可用于本科实验教学。将前沿科学技术引入本科实验教学,促进了科学研究与本科实验教学相融合,实现了科研教学水平的同步提高。

FBG(Fiber Bragg Grating)sensing technology has achieved rapid development in scientific research and engineering applications,but it is rarely used in undergraduate experimental teaching.Currently,there are few devices available in the market that can be directly used for FBG sensing experimental teaching,and cutting⁃edge scientific research technology is disconnected from undergraduate experimental teaching.To address this situation,a teaching experiment device for temperature stress sensing based on FBG has been designed.The device consists of three parts:a fiber laser,a spectrometer,and upper computer control software.The fiber laser enables laser output of about 1550 nm.The spectrometer measures the change of FBG center wavelength and collects data into the computer.The upper computer control software is used for graphic display and data storage.The experimental device has the advantages of simple operation,flexible assembly,good repeatability,and stability,and can be used for undergraduate experimental teaching.We introduce cutting⁃edge science and technology into undergraduate experimental teaching,promote the integration of scientific research and experimental teaching,and realize the synchronous improvement of scientific research and teaching levels.