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    Brillouin optical time-domain analyzer for extended sensing range using probe dithering and cyclic coding

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    Date
    2017
    Author
    Iribas Pardo, Haritz Upna
    Loayssa Lara, Alayn Upna
    Sauser, Florian 
    Llera, Miguel 
    Le Floch, Sébastien 
    Version
    Acceso abierto / Sarbide irekia
    xmlui.dri2xhtml.METS-1.0.item-type
    Contribución a congreso / Biltzarrerako ekarpena
    Version
    Versión aceptada / Onetsi den bertsioa
    Project Identifier
    ES/1PE/TEC2013-47264 
    ES/1PE/TEC2016-76021 
    Impact
     
     
     
    10.1117/12.2265426
     
     
     
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    Abstract
    We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power that can be injected in the fiber before the onset of non-local effects and noise generated by spontaneous Brillouin scattering. This leads to higher detected signal-to-noise rati ... [++]
    We present an enhanced performance Brillouin optical time-domain analysis sensor that uses dual probes waves with optical frequency modulation and cyclic coding. The frequency modulation serves to increase the probe power that can be injected in the fiber before the onset of non-local effects and noise generated by spontaneous Brillouin scattering. This leads to higher detected signal-to-noise ratio (SNR), which is further increased by the coding gain. The enhanced SNR translates to extended range for the sensor, with experiments demonstrating 1-m spatial resolution over a 164 km fiber loop with a 3-MHz Brillouin frequency shift measurement precision at the worst contrast position. In addition, we introduce a study of the power limits that can be injected in the fiber with cyclic coding before the appearance of distortions in the decoded signal. [--]
    Subject
    Brillouin distributed sensors, Brillouin optical time domain analysis, Cyclic coding
     
    Publisher
    SPIE
    Published in
    Proc. SPIE 10323, 25th International Conference on Optical Fiber Sensors, 103230Q (April 23, 2017)
    Departament
    Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica / Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektriko eta Elektronikoa Saila
     
    Publisher version
    https://dx.doi.org/10.1117/12.2265426
    URI
    https://hdl.handle.net/2454/24230
    Sponsorship
    The authors wish to acknowledge the financial support of the Spanish Ministerio de Economía y Competitividad through the projects TEC2013-47264- C2-2-R and TEC2016-76021-C2-1-R, FEDER funds and the UPNA.
    Appears in Collections
    • Comunicaciones y ponencias de congresos DIEE - IEES Biltzarretako komunikazioak eta txostenak [160]
    • Comunicaciones y ponencias de congresos - Biltzarrak eta Argitalpenak [373]
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