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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    author = "Ikka Alasaarela and Pentti Karioja and Harri Kopola",
    year = "2002",
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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

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    AU - Alasaarela, Ikka

    AU - Karioja, Pentti

    AU - Kopola, Harri

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    KW - optical modulation

    KW - light interferometers

    KW - intelligent sensors

    KW - light coherence

    KW - reflectometry

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