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Comprehensive Analysis of FBG and Distributed Rayleigh, Brillouin, and Raman Optical Sensor-Based Solutions for Road

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Summary

This review analyzes fiber-optic sensor (FOS) technologies for smart road monitoring. It compares FOS sensing methods, physical parameter monitoring, and spatial positioning for enhanced road infrastructure integrity.

Keywords:
Brillouin optical sensorsRaman optical sensorsRayleigh optical sensorsdistributed optical sensorsfiber Bragg grating (FBG)point optical sensorsquasi-distributed optical sensorsroad infrastructure monitoringstructural health monitoring

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Area of Science:

  • Civil Engineering
  • Materials Science
  • Sensor Technology

Background:

  • Road infrastructure monitoring is crucial for safety and maintenance.
  • Fiber-optic sensors (FOS) offer advantages like electromagnetic immunity and remote sensing.
  • Integrating FOS into roads enables 'smart road' functionalities.

Purpose of the Study:

  • To comprehensively analyze common road monitoring methods.
  • To evaluate various fiber-optic sensor (FOS) solutions for road applications.
  • To assess key factors influencing FOS-based road monitoring.

Main Methods:

  • Review and analysis of existing literature on FOS for road monitoring.
  • Descriptive comparison of different optical sensing technologies (FBG, Brillouin, Rayleigh, Raman).
  • Evaluation of technological approaches for monitoring physical parameters (strain, temperature, vibration, humidity, pressure).
  • Analysis of spatial positioning methodologies (point, quasi-distributed, distributed).

Main Results:

  • Fiber-optic sensors provide significant advantages for road monitoring.
  • Different FOS technologies offer varying sensitivity, resolution, and measurement distances.
  • Various physical parameters can be monitored to assess road integrity.
  • Spatial positioning methods impact monitoring capabilities and applications.

Conclusions:

  • Fiber-optic sensors are a promising technology for smart road solutions.
  • The choice of FOS technology and configuration depends on specific monitoring needs.
  • FOS enable comprehensive assessment of road infrastructure integrity and integration of smart applications.