High performance and highly reliable Raman-based distributed temperature sensors based on correlation-coded OTDR and multimode graded-index fibers

The performance of distributed temperature sensor systems based on spontaneous Raman scattering and coded OTDR are investigated. The evaluated DTS system, which is based on correlation coding, uses graded-index multimode fibers, operates over short-to-medium distances (up to 8 km) with high spatial and temperature resolutions (better than 1 m and 0.3 K at 4 km distance with 10 min measuring time) and high repeatability even throughout a wide temperature range.

Published in:
Proceedings SPIE, Third European Workshop on Optical Fibre Sensors, 6619
Presented at:
Third European Workshop on Optical Fibre Sensors, Napoli, Italy, 04 July 2007

 Record created 2012-11-02, last modified 2018-01-28

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