Optical fiber sensor with double tubes for accurate strain and temperature measurement under high temperature up to 1000 degrees C

• Main Authors: Tian, Qin, Xin, Guoguo, Lim, Kok-Sing, Ee, Yen-Jie, Xue, Fengfeng, He, Yudong, Zhu, Jiajie, Ahmad, Harith, Liu, Xiaochong, Yang, Hangzhou
• Format: Article
• Published: Institute of Electrical and Electronics Engineers (IEEE) 2022
• Subjects: TA Engineering (General). Civil engineering (General)
• Online Access: http://eprints.um.edu.my/41916/

In this work, we present a discriminative optical fiber sensor for temperature and strain measurement. The sensor comprises of two cascaded thermal regenerated Fiber Bragg gratings (RFBGs) incorporated with two fused silica capillary tubes. The RFBG(2) is loosely enclosed in a fine fused silica tube...