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Brillouin frequency shift estimation in BOTDA via subpixel processing

Abstract: In this paper we propose the employment of sub-pixel algorithms for the estimation of the central frequency of the Brillouin Gain Spectrum in a Brillouin Optical Time Domain Analyzer. The experimental results will show that the proposed solution shows a good performance when the chosen frequency step for the required frequency sweep is high. If the improved computational efficiency in comparison to the traditional Lorentzian fitting is also considered, it can be concluded that this approach may be of great interest for dynamic measurement scenarios.

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Authorship: Ruiz-Lombera R., Mirapeix J., Laarossi I., Rodríguez-Cobo L., Lopez-Higuera J.,

Congress: European Workshop on Optical Fibre Sensors (6º : 2016 : Limerick, Irlanda)

Publisher: SPIE Society of Photo-Optical Instrumentation Engineers

Year of publication: 2016

No. of pages: 4

Publication type: Conference object

DOI: 10.1117/12.2236862

ISSN: 0277-786X,1996-756X

Spanish project: TEC2013-47264-C2-1-R

Publication Url: https://doi.org/10.1117/12.2236862

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Authorship

RUBEN RUIZ LOMBERA

JESUS MARIA MIRAPEIX SERRANO

ISMAIL LAAROSSI

LUIS RODRIGUEZ COBO

JOSE MIGUEL LOPEZ HIGUERA

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