title: Sensitivity-improved strain sensor over a large range of temperatures using an etched and regenerated fiber Bragg grating.
abstract: A sensitivity-improved fiber-optic strain sensor using an etched and regenerated fiber Bragg grating (ER-FBG) suitable for a large range of temperature measurements has been proposed and experimentally demonstrated. The process of chemical etching (from 125 µm to 60 µm) provides regenerated gratings (at a temperature of 680 °C) with a stronger reflective intensity (from 43.7% to 69.8%), together with an improved and linear strain sensitivity (from 0.9 pm/με to 4.5 pm/με) over a large temperature range (from room temperature to 800 °C), making it a useful strain sensor for high temperature environments.
authors.affiliation: School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. ypgood@163.com.
authors.forename: Yupeng
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. xgqiao@nwu.edu.cn.
authors.forename: Xueguang
authors.initials: X
authors.lastname: Qiao
authors.affiliation: School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. yanghz@nwu.edu.cn.
authors.forename: Hangzhou
authors.initials: H
authors.lastname: Yang
authors.affiliation: School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. dansuf@163.com.
authors.forename: Dan
authors.initials: D
authors.lastname: Su
authors.affiliation: School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. liling559@163.com.
authors.forename: Ling
authors.initials: L
authors.lastname: Li
authors.affiliation: Institute of Photonics Technology, Jinan University, Guangzhou 510632, China. tuanguo@jnu.edu.cn.
authors.forename: Tuan
authors.initials: T
authors.lastname: Guo