Comparison of distributed fiber optic sensing methods for location and quantity information measurements

Ikka Alasaarela, Pentti Karioja, Harri Kopola

Research output: Contribution to journalArticleScientificpeer-review

22 Citations (Scopus)

Abstract

A state-of-the-art review of distributed optical fiber sensor technologies has been carried out. The studied methods include polarization-modulation-based, Brillouin- scattering-based, and frequency-modulated continuous-wave (FMCW) methods as well as optical coherence domain reflectometry (OCDR) and interferometric distributed sensing techniques. A classification of the methods with their main properties for measuring quantity information continuously from a long sensor fiber is carried out. The main emphasis is on the comparison of the methods with respect to their spatial resolution, measurement time, and measurement range. The FMCW methods are found to be the most versatile techniques for various applications, due to their short measurement times with measurement ranges extending up to tens of kilometers and location sensing resolution better than 0.1%. The OCDR methods are fast and compete with the FMCW methods in versatility, especially when the measurement range is shorter than 1 to 2 km.
Original languageEnglish
Pages (from-to)181-189
JournalOptical Engineering
Volume41
Issue number1
DOIs
Publication statusPublished - 2002
MoE publication typeA1 Journal article-refereed

Fingerprint

rangefinding
Fiber optics
continuous radiation
fiber optics
Time measurement
time measurement
Brillouin scattering
polarization modulation
sensors
Fiber optic sensors
versatility
spatial resolution
optical fibers
Modulation
Polarization
fibers
Fibers
Sensors
scattering

Keywords

  • distributed sensors
  • fibre optic sensors
  • sensors
  • reviews
  • Brillouin spectra
  • light polarisation
  • optical modulation
  • light interferometers
  • intelligent sensors
  • light coherence
  • reflectometry

Cite this

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title = "Comparison of distributed fiber optic sensing methods for location and quantity information measurements",
abstract = "A state-of-the-art review of distributed optical fiber sensor technologies has been carried out. The studied methods include polarization-modulation-based, Brillouin- scattering-based, and frequency-modulated continuous-wave (FMCW) methods as well as optical coherence domain reflectometry (OCDR) and interferometric distributed sensing techniques. A classification of the methods with their main properties for measuring quantity information continuously from a long sensor fiber is carried out. The main emphasis is on the comparison of the methods with respect to their spatial resolution, measurement time, and measurement range. The FMCW methods are found to be the most versatile techniques for various applications, due to their short measurement times with measurement ranges extending up to tens of kilometers and location sensing resolution better than 0.1{\%}. The OCDR methods are fast and compete with the FMCW methods in versatility, especially when the measurement range is shorter than 1 to 2 km.",
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Comparison of distributed fiber optic sensing methods for location and quantity information measurements. / Alasaarela, Ikka; Karioja, Pentti; Kopola, Harri.

In: Optical Engineering, Vol. 41, No. 1, 2002, p. 181-189.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

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AU - Alasaarela, Ikka

AU - Karioja, Pentti

AU - Kopola, Harri

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AB - A state-of-the-art review of distributed optical fiber sensor technologies has been carried out. The studied methods include polarization-modulation-based, Brillouin- scattering-based, and frequency-modulated continuous-wave (FMCW) methods as well as optical coherence domain reflectometry (OCDR) and interferometric distributed sensing techniques. A classification of the methods with their main properties for measuring quantity information continuously from a long sensor fiber is carried out. The main emphasis is on the comparison of the methods with respect to their spatial resolution, measurement time, and measurement range. The FMCW methods are found to be the most versatile techniques for various applications, due to their short measurement times with measurement ranges extending up to tens of kilometers and location sensing resolution better than 0.1%. The OCDR methods are fast and compete with the FMCW methods in versatility, especially when the measurement range is shorter than 1 to 2 km.

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KW - light polarisation

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KW - light interferometers

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KW - reflectometry

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