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A Review of Strain-Distributed Optical Fiber Sensors for Geohazard Monitoring: An Update
Agnese Coscetta1, Ester Catalano1, Emilia Damiano1
1Department of Engineering, University of Campania "Luigi Vanvitelli", 80131 Aversa, Italy.
Sensors (Basel, Switzerland)
|October 29, 2025
Summary
Distributed optical fiber sensors (DFOS) offer accurate, real-time monitoring for geohazards like landslides and earthquakes. While mature for geotechnical applications, vibration detection needs further technological development for widespread early warning systems.
Area of Science:
- Geotechnical Engineering
- Environmental Monitoring
- Sensor Technology
Background:
- Geohazards threaten safety and infrastructure, necessitating advanced monitoring.
- Distributed Optical Fiber Sensors (DFOS) are minimally intrusive, accurate tools for strain, temperature, and vibration.
- Despite mature technology, DFOS adoption in early warning systems is limited due to mistrust.
Purpose of the Study:
- To discuss the implementation of DFOS for early warning of geotechnical hazards.
- To provide a comparative analysis of DFOS systems' advantages and limitations.
- To assess the maturity of DFOS for reliable, long-term geotechnical applications.
Main Methods:
- Case study analysis of DFOS implementation.
- Comparative evaluation of different DFOS systems.
- Assessment of DFOS suitability for geohazard monitoring and early warning.
Main Results:
- Real-time DFOS systems are mature for reliable, long-term geotechnical applications.
- DFOS addresses a market segment underserved by other monitoring techniques.
- Vibration detection using DFOS requires further technological advancement and standardization.
Conclusions:
- DFOS technology is sufficiently mature for widespread use in geotechnical hazard monitoring.
- Further development is needed for DFOS in large-scale, real-time vibration-based early warning systems.
- DFOS presents a significant opportunity for enhancing geohazard early detection and management.
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