Full-Text Search:
Home|Journal Papers|About CNKI|User Service|FAQ|Contact Us|中文
《Low Temperature Physical Letters》 2018-05
Add to Favorite Get Latest Update

Method of Enhancement of Temperaturesensitivity for Fiber Bragg Grating at Low Temperature Based on a Variable Stiffness Structure

YANG Taolue;WANG Xingzhe;Key Laboratory of Mechanics on Western Disaster and Environment,Ministry of Education,College of Civil Engineering and Mechanic,Lanzhou University;  
Fiber Bragg Gratings(FBG)have been widely used in optical strain,temperature measurements as one of non-electromagnetic signal testing methods.They have advantage of significant anti-electromagnetic interference and can be embedded inside of the structure.However,under extreme conditions(such as cryogenic temperature),the optical fibers due to the limitations of the material characteristics,their sensing characteristics are invalid which even limit applications.Based on the method of changing structural stiffness,this paper presents a structural design of enhancement of temperature sensitivity for the fiber Bragg grating sensor in low-temperature region.The results show that the FBG can effectively work at low temperature,and the temperature sensitivity is obviously enhanced.The sensitivity dependence on structural material and geometrical properties is obtained,and the sensitivities of the grating region related to temperature and strain are optimized to even increase an order of magnitude.Finally,we completed the design and manufacture of this structure to validate the proposed method.
【Fund】: 国家自然科学基金项目(11672120 11327802)资助的课题
【CateGory Index】: TP212;TN253
Download(CAJ format) Download(PDF format)
CAJViewer7.0 supports all the CNKI file formats; AdobeReader only supports the PDF format.
©2006 Tsinghua Tongfang Knowledge Network Technology Co., Ltd.(Beijing)(TTKN) All rights reserved