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    Enhanced tolerance to pulse extinction ratio in Brillouin optical time domain analysis sensors by dithering of the optical source

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    Date
    2015
    Author
    Iribas Pardo, Haritz Upna Orcid
    Urricelqui Polvorinos, Javier Upna Orcid
    Sagüés García, Mikel Upna Orcid
    Loayssa Lara, Alayn Upna Orcid
    Version
    Acceso abierto / Sarbide irekia
    Type
    Contribución a congreso / Biltzarrerako ekarpena
    Version
    Versión aceptada / Onetsi den bertsioa
    Project Identifier
    ES/1PE/TEC2013-47264 
    Impact
     
     
     
    10.1117/12.2195264
     
     
     
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    Abstract
    We demonstrate the relaxation of the stringent requirements placed on the pulse extinction ratio in long-range Brillouin optical time-domain analysis sensors (BOTDA) by modulating the wavelength of the laser source that is used to generate both pump and probe waves. This modulation makes the counter-propagating pulse pedestal and probe waves to become correlated only at certain locations in the f ... [++]
    We demonstrate the relaxation of the stringent requirements placed on the pulse extinction ratio in long-range Brillouin optical time-domain analysis sensors (BOTDA) by modulating the wavelength of the laser source that is used to generate both pump and probe waves. This modulation makes the counter-propagating pulse pedestal and probe waves to become correlated only at certain locations in the fiber, thus reducing the gain experienced by the probe wave, which is precisely the process that limits the performance in long-range BOTDAs. Proof-of-concept experimental results in a 20-km sensing link demonstrate a 6-dB reduction of the required modulator extinction ratio. [--]
    Subject
    Brillouin distributed sensors, Brillouin optical time domain analysis, Extinction ratio
     
    Publisher
    SPIE
    Published in
    Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 96344Z (September 28, 2015)
    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/10.1117/12.2195264
    URI
    https://hdl.handle.net/2454/22746
    Sponsorship
    The authors acknowledge the support of the Spanish Ministerio de Economía y Competitividad project TEC2013-47264- C2-2-R, FEDER funds and the Universidad Pública de Navarra.
    Appears in Collections
    • Comunicaciones y ponencias de congresos DIEE - IEES Biltzarretako komunikazioak eta txostenak [177]
    • Comunicaciones y ponencias de congresos - Biltzarrak eta Argitalpenak [571]
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