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Fiber Optic Distributed Sensors for High-resolution Temperature Field Mapping
09:48

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Published on: November 7, 2016

High-resolution distributed temperature sensing with the multiphoton-timing technique.

M Höbel, J Ricka, M Wüthrich

    Applied Optics
    |November 6, 2010
    PubMed
    Summary
    This summary is machine-generated.

    A new distributed temperature sensor (DTS) uses photon-timing and Raman thermometry for high-resolution temperature measurements. This advanced DTS achieves high accuracy with fast, multi-point readings along optical fibers.

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    Area of Science:

    • Physics
    • Optical Sensing
    • Thermometry

    Background:

    • Distributed temperature sensing (DTS) is crucial for monitoring infrastructure.
    • Existing DTS systems face limitations in spatial resolution and measurement speed.
    • Anti-Stokes Raman thermometry offers a basis for accurate temperature sensing.

    Purpose of the Study:

    • To develop a novel multiphoton-timing distributed temperature sensor (DTS).
    • To achieve high spatial resolution and accurate temperature measurements over long distances.
    • To investigate and address non-ideal component behaviors in DTS systems.

    Main Methods:

    • Utilized distributed anti-Stokes Raman thermometry.
    • Integrated a fast single-photon avalanche diode.
    • Implemented specially designed real-time signal-processing electronics.
    • Analyzed parameters affecting analog and photon-timing DTS.

    Main Results:

    • Achieved very high spatial resolution of 40 cm.
    • Enabled temperature determination at 4000 points within 5 minutes.
    • Obtained temperature accuracy of Δ T < 2 °C.
    • Demonstrated effective correction procedures for non-ideal sensor components.

    Conclusions:

    • The developed DTS system offers a significant advancement in temperature sensing technology.
    • The combination of photon-timing and Raman thermometry provides superior performance.
    • The study provides insights into optimizing DTS systems by addressing component non-idealities.