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A review on optical fiber sensors for environmental monitoring

Review Paper

Abstract

Environmental monitoring has become essential in order to deal with environmental resources efficiently and safely in the realm of green technology. Environmental monitoring sensors are required for detection of environmental changes in industrial facilities under harsh conditions, (e.g. underground or subsea pipelines) in both the temporal and spatial domains. The utilization of optical fiber sensors is a promising scheme for environmental monitoring of this kind, owing to advantages including resistance to electromagnetic interference, durability under extreme temperatures and pressures, high transmission rate, light weight, small size, and flexibility. In this paper, the optical fiber sensors employed in environmental monitoring are summarized for understanding of their sensing principles and fabrication processes. Numerous specific applications in petroleum engineering, civil engineering, and agricultural engineering are explored, followed by discussion on the potentials of OFS in manufacturing.

Keywords

Fiber-optic sensor Sensor fabrication Fiber gratings Distributed sensor Environmental sensor 

Nomenclature

OFS

Optical fiber sensor

FBG

Fiber Bragg grating

LPFG

Long period fiber grating

MZI

Mach-Zehnder interferometer

MI

Michelson interferometer

FPI

Fabry-Perot interferometer

DAS

Distributed acoustic system

OTDR

Optical Time-Domain Reflectometry

OFDR

Optical frequency -Domain Reflectometry

OFS

Optical fiber sensor

BOTDA

Brillouin Optical Time Domain Analysis

BOTDA

Brillouin Optical Frequency Domain Analysis

RI

Refractive index

UV

Ultraviolet

Vis

Visible

NIR

Near infrared

SMF

Single-Mode fiber

MMF

Multi-Mode fiber

PCF

Photonic crystal fiber

HOF

Hollow optical fiber

CSF

Coreless silica fiber

DTS

Distributed temperature sensor

SHM

Structural health monitoring

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Copyright information

© Korean Society for Precision Engineering 2018

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringYonsei UniversitySeoulRepublic of Korea
  2. 2.School of Mechanical EngineeringPurdue UniversityWest LafayetteUSA

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