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Appl. Sci. 2017, 7(9), 896; doi:10.3390/app7090896

A Review of Distributed Fibre Optic Sensors for Geo-Hydrological Applications

National Research Council, Research Institute for Geo-Hydrological Protection, Corso Stati Uniti 4, I-35127 Padova, Italy
Academic Editor: Miguel González Herráez
Received: 5 August 2017 / Revised: 25 August 2017 / Accepted: 27 August 2017 / Published: 1 September 2017
(This article belongs to the Special Issue Distributed Optical Fiber Sensors)

Abstract

Distributed optical fibre sensing, employing either Rayleigh, Raman, or Brillouin scattering, is the only physical-contact sensor technology capable of accurately estimating physical fields with spatial continuity along the fibre. This unique feature and the other features of standard optical fibre sensors (e.g., minimal invasiveness and lightweight, remote powering/interrogating capabilities) have for many years promoted the technology to be a promising candidate for geo-hydrological monitoring. Relentless research efforts are being undertaken to bring the technology to complete maturity through laboratory, physical models, and in-situ tests. The application of distributed optical fibre sensors to geo-hydrological monitoring is here reviewed and discussed, along with basic principles and main acquisition techniques. Among the many existing geo-hydrological processes, the emphasis is placed on those related to soil levees, slopes/landslide, and ground subsidence that constitute a significant percentage of current geohazards. View Full-Text
Keywords: distributed optical fibre sensors; landslide; soil erosion; subsidence; levees distributed optical fibre sensors; landslide; soil erosion; subsidence; levees
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Schenato, L. A Review of Distributed Fibre Optic Sensors for Geo-Hydrological Applications. Appl. Sci. 2017, 7, 896.

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