B6.2 - Incoherent Optical Frequency Domain Reflectometry for Distributed Raman and Bragg Fiber Temperature Sensors

Köppel, Max; Werzinger, Stefan; Sutter, J.R.; Bergdolt, Sven; Schmauß, Bernhard; Engelbrecht, Rainer

doi:10.5162/sensor2017/b6.2

Proceedings Sensor 2017 2017

DOI: 10.5162/sensor2017/b6.2

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B6.2 - Incoherent Optical Frequency Domain Reflectometry for Distributed Raman and Bragg Fiber Temperature Sensors

Max Köppel¹,

Stefan Werzinger²,

J.R. Sutter³

et al.

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Combined distributed Raman and Bragg fiber temperature sensing using incoherent optical frequency domain reflectometry

Koeppel

Werzinger

Ringel

et al. 2018

J. Sens. Sens. Syst.

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Optical temperature sensors offer unique features which make them indispensable for key industries such as the energy sector. However, commercially available systems are usually designed to perform either distributed or distinct hot spot temperature measurements since they are restricted to one measurement principle. We have combined two concepts, fiber Bragg grating (FBG) temperature sensors and Raman-based distributed temperature sensing (DTS), to overcome these limitations. Using a technique called incoherent optical frequency domain reflectometry (IOFDR), it is possible to cascade several FBGs with the same Bragg wavelength in one fiber and simultaneously perform truly distributed Raman temperature measurements. In our lab we have achieved a standard deviation of 2.5 K or better at a spatial resolution in the order of 1 m with the Raman DTS. We have also carried out a field test in a high-voltage environment with strong magnetic fields where we performed simultaneous Raman and FBG temperature measurements using a single sensor fiber only.Published by Copernicus Publications on behalf of the AMA Association for Sensor Technology.

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Combined distributed Raman and Bragg fiber temperature sensing using incoherent optical frequency domain reflectometry

Koeppel

Werzinger

Ringel

et al. 2018

J. Sens. Sens. Syst.

View full text Add to dashboard Cite

show abstract

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B6.2 - Incoherent Optical Frequency Domain Reflectometry for Distributed Raman and Bragg Fiber Temperature Sensors

Cited by 1 publication

References 0 publications

Combined distributed Raman and Bragg fiber temperature sensing using incoherent optical frequency domain reflectometry

Combined distributed Raman and Bragg fiber temperature sensing using incoherent optical frequency domain reflectometry

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