We experimentally investigate the benefits of a new optical pulse coding technique for long-range, meter and sub- meter scale Raman-based distributed temperature sensing on standard single-mode optical fibers. The proposed scheme combines a low-repetition-rate quasi-periodic pulse coding technique with the use of standard high-power fiber lasers operating at 1550 nm, allowing for what we believe is the first long-range distributed temperature measurement over single-mode fibers (SMFs).We have achieved 1m spatial resolution over 26 km of SMF, attaining 3 C temperature resolution within 30 s measurement time.
Raman-based distributed temperature sensor with 1 m spatial resolution over 26 km SMF using low-repetition-rate cyclic pulse coding
BOLOGNINI, Gabriele;DI PASQUALE, Fabrizio Cesare Filippo
2011-01-01
Abstract
We experimentally investigate the benefits of a new optical pulse coding technique for long-range, meter and sub- meter scale Raman-based distributed temperature sensing on standard single-mode optical fibers. The proposed scheme combines a low-repetition-rate quasi-periodic pulse coding technique with the use of standard high-power fiber lasers operating at 1550 nm, allowing for what we believe is the first long-range distributed temperature measurement over single-mode fibers (SMFs).We have achieved 1m spatial resolution over 26 km of SMF, attaining 3 C temperature resolution within 30 s measurement time.File in questo prodotto:
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