Ultralong fibre-optic distributed Raman temperature sensor

We have demonstrated an ultralong (up to 85 km in length) all-fibre Raman temperature sensor which utilises SMF-28 standard single-mode telecom fibre and a 1.63-μm probe signal source. The probe signal from the laser diode is amplified by a Raman fibre amplifier. The temperature along a 85-km-long f...

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Bibliographic Details
Published in:Quantum electronics (Woodbury, N.Y.) N.Y.), 2017-11, Vol.47 (10), p.967-970
Main Authors: Kuznetsov, A.G., Kharenko, D.S., Babin, S.A., Tsydenzhapov, I.B., Shelemba, I.S.
Format: Article
Language:English
Subjects:
ACCURACY
AMPLIFIERS
distributed temperature sensor
FIBER OPTICS
fibre-optic link
INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
LASERS
Long fibers
Optical fibers
PROBES
RAMAN EFFECT
Raman scattering
Semiconductor lasers
SENSORS
SIGNALS
SPATIAL RESOLUTION
TEMPERATURE MEASUREMENT
Temperature sensors
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Description
Summary:We have demonstrated an ultralong (up to 85 km in length) all-fibre Raman temperature sensor which utilises SMF-28 standard single-mode telecom fibre and a 1.63-μm probe signal source. The probe signal from the laser diode is amplified by a Raman fibre amplifier. The temperature along a 85-km-long fibre line has been measured with an accuracy of 8°C and spatial resolution of 800 m or better.
ISSN:1063-7818
1468-4799
DOI:10.1070/QEL16436