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Related Concept Videos

Measurements of Strain01:27

Measurements of Strain

Strain quantifies the deformation of a material under force, typically measured as normal strain, which represents the change in length when compared with the original length. Electrical strain gauges are used for enhanced accuracy. These devices consist of a conductive wire mounted on a paper backing that adheres to the material's surface. These gauges operate on the piezoresistive effect, where the wire's electrical resistance changes in response to mechanical deformation. The strain gauge...

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Related Experiment Video

Updated: Jun 3, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

High spatial resolution distributed strain sensor based on linear chirped fiber Bragg grating and fiber loop ringdown

Jiulin Gan1, Yunqi Hao, Qing Ye

  • 1Shanghai Key Laboratory of All Solid-state Laser and Applied Techniques, Shanghai Institute of Optics and Fine Mechanics, Chinese Academy of Sciences, Shanghai, China.

Optics Letters
|March 16, 2011
PubMed
Summary

A new sensor system uses a fiber loop ringdown technique and chirped fiber Bragg grating to achieve high-resolution distributed strain measurement with 2mm accuracy. This method enables real-time sensing for various physical parameters.

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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

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Last Updated: Jun 3, 2026

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings
08:23

A Random-displacement Measurement by Combining a Magnetic Scale and Two Fiber Bragg Gratings

Published on: September 30, 2019

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping

Published on: November 7, 2016

Area of Science:

  • Optoelectronics and Photonics
  • Materials Science and Engineering
  • Sensor Technology

Background:

  • Distributed strain sensing is crucial for structural health monitoring and material analysis.
  • Existing methods often lack the required spatial resolution for detailed strain field mapping.
  • Fiber optic sensing offers advantages in harsh environments and for remote measurements.

Purpose of the Study:

  • To propose and experimentally demonstrate a novel sensor system for high spatial resolution distributed strain field measurement.
  • To achieve a spatial resolution of 2 mm for strain sensing.
  • To explore the feasibility of sensor networks for extended coverage.

Main Methods:

  • Utilizing the fiber loop ringdown technique.
  • Integrating a linear chirped fiber Bragg grating for enhanced resolution.
  • Experimental validation of the sensor system's performance.

Main Results:

  • Successful demonstration of a distributed strain sensor with 2 mm spatial resolution.
  • Experimental exploration and research into sensor network capabilities.
  • Proof-of-concept validation of the proposed sensing technique.

Conclusions:

  • The developed sensor system effectively achieves high spatial resolution distributed strain measurement.
  • The technique shows promise for real-time distributed sensing of physical parameters like strain and temperature.
  • Potential for broad applications in structural monitoring and material science.