30 May 2016 Influence of laser phase noise on Brillouin optical time-domain analysis sensors
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Proceedings Volume 9916, Sixth European Workshop on Optical Fibre Sensors; 99162T (2016) https://doi.org/10.1117/12.2236619
Event: Sixth European Workshop on Optical Fibre Sensors (EWOFS'2016), 2016, Limerick, Ireland
Abstract
This paper presents a numerical study of the phase noise from the laser in Brillouin Optical Time-Domain analysis (BOTDA) sensors. Due to laser phase noise, the phase shift cumulated by pump and probe beams during interaction in a generic fiber position is a stochastic variable, with zero mean and variance increasing with pulse duration. For negligibly small pulse leakage, the induced noise is independent of fiber length; otherwise, it increases with fiber length as long as the laser coherence length is longer than fiber.
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A. Minardo, A. Minardo, L. Zeni, L. Zeni, "Influence of laser phase noise on Brillouin optical time-domain analysis sensors", Proc. SPIE 9916, Sixth European Workshop on Optical Fibre Sensors, 99162T (30 May 2016); doi: 10.1117/12.2236619; https://doi.org/10.1117/12.2236619
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