Related Experiment Video
Updated: Apr 22, 2026

Optimized Sealing Process and Real-Time Monitoring of Glass-to-Metal Seal Structures
Published on: September 2, 2019
Sensitivity-improved strain sensor over a large range of temperatures using an etched and regenerated fiber Bragg
Yupeng Wang1, Xueguang Qiao2, Hangzhou Yang3
1School of Physics, Northwest University, Xi'an, Shaanxi 710069, China. ypgood@163.com.
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.
More Related Videos
08:23A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
Published on: September 30, 2019
10:52Design, Instrumentation and Usage Protocols for Distributed In Situ Thermal Hot Spots Monitoring in Electric Coils using FBG Sensor Multiplexing
Published on: March 8, 2020
Related Concept Videos
Measurements of Strain
Design Example: Strain Gauge Bridge or Wheatstone Bridge
Thermal Strain