23 April 2017 BOTDA sensing system employing a tunable low-cost Brillouin fiber ring laser pump-probe source
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Proceedings Volume 10323, 25th International Conference on Optical Fiber Sensors; 1032395 (2017) https://doi.org/10.1117/12.2267520
Event: 25th International Conference on Optical Fiber Sensors, 2017, Jeju, Korea, Republic of
Abstract
In this paper we show a Brillouin optical time-domain analysis (BOTDA) sensing system experiment employing a tunable narrow-linewidth dual pump-probe source based on modified Brillouin ring laser technology. The developed cost-effective source generates a pump-locked and tunable probe light, with wavelength shift and a large tuning range (~200 MHz), narrow linewidth (<2.5 MHz) and adequate power (~0.5 mW). The developed source was hence employed in BOTDA system experiments providing distributed sensing over ~10 km single mode optical fiber, and attaining strain and temperature resolutions of ~10με and ~0.5 °C respectively, indicating the pump-probe source as an efficient and cost-effective solution for BOTDA avoiding high-frequency signal generators or complex locking techniques.
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M. Iuliano, D. Marini, F. Bastianini, G. Bolognini, "BOTDA sensing system employing a tunable low-cost Brillouin fiber ring laser pump-probe source ", Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 1032395 (23 April 2017); doi: 10.1117/12.2267520; https://doi.org/10.1117/12.2267520
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