We present a long-range Brillouin optical time domain reflectometer (BOTDR) based on photon counting technology using single-mode fibres. We use the slope of a fiber Bragg grating (FBG) as a frequency discriminator, in order to convert count rate variation into a frequency shift. We demonstrate experimentally the ability to perform a distributed temperature measurement, by detecting a hot spot in a thermal bath and the possibility to achieve measurement above 100 km with a spatial resolution of 10 m. A performance study of our distributed sensor as a function of the photon counter efficiency is also presented.


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    Titel :

    Single-photon detector based long-distance Brillouin optical time domain reflectometry


    Beteiligte:
    Wuilpart, Marc (Herausgeber:in) / Caucheteur, Christophe (Herausgeber:in) / Romanet, Maxime (Autor:in) / Rochat, Etienne (Autor:in) / Phan-Huy, Kien (Autor:in) / Beugnot, Jean-Charles (Autor:in)

    Kongress:

    European Workshop on Optical Fibre Sensors (EWOFS 2023) ; 2023 ; Mons, Belgium


    Erschienen in:

    Proc. SPIE ; 12643


    Erscheinungsdatum :

    2023-05-23





    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch