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

Maxime Romanet; Etienne Rochat; Kien Phan-Huy; Jean-Charles Beugnot

doi:10.1117/12.2679688

23 May 2023 Single-photon detector based long-distance Brillouin optical time domain reflectometry

Maxime Romanet, Etienne Rochat, Kien Phan-Huy, Jean-Charles Beugnot

Proceedings Volume 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023); 126432A (2023) https://doi.org/10.1117/12.2679688
Event: European Workshop on Optical Fibre Sensors (EWOFS 2023), 2023, Mons, Belgium

Abstract

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.

Citation Download Citation

Maxime Romanet, Etienne Rochat, Kien Phan-Huy, and Jean-Charles Beugnot "Single-photon detector based long-distance Brillouin optical time domain reflectometry", Proc. SPIE 12643, European Workshop on Optical Fibre Sensors (EWOFS 2023), 126432A (23 May 2023); https://doi.org/10.1117/12.2679688

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