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Related Experiment Videos

Quasi-distributed fiber-optic strain sensor: principle and experiment.

Y Zhao1, F Ansari

  • 1Department of Civil and Materials Engineering, University of Illinois at Chicago, 60607-7023, USA.

Applied Optics
|April 18, 2002
PubMed
Summary

A novel quasi-distributed intrinsic fiber-optic strain sensor using white-light interferometry enables structural health monitoring. This system accurately measures distributed strains with automatic environmental drift compensation.

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Area of Science:

  • Structural Health Monitoring
  • Optical Fiber Sensing
  • Interferometry

Background:

  • Distributed sensing is crucial for comprehensive structural monitoring.
  • Optical fiber sensors offer geometric versatility and material integration advantages.
  • White-light interferometry provides a robust method for optical sensing.

Purpose of the Study:

  • To develop and characterize a quasi-distributed intrinsic fiber-optic strain sensor.
  • To enable distributed strain measurement using double white-light interferometry.
  • To achieve automatic compensation for environmental drift.

Main Methods:

  • Linking serial segments of single-mode optical fibers as a common-path interferometer.
  • Employing a scanning white-light interferometer for distributed strain sensing.

Related Experiment Videos

  • Utilizing strain gauges for system verification.

    • Main Results:

    • Demonstrated linearity of the developed optical fiber sensor system.
    • Validated the capability for distributed strain sensing.
    • Confirmed automatic compensation for temperature and vibration effects.

    Conclusions:

    • The developed quasi-distributed fiber-optic sensor system effectively measures structural strains.
    • The system offers reliable distributed sensing with environmental drift compensation.
    • This technology advances structural health monitoring capabilities.