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Presented at: Fifth European Workshop on Optical Fibre Sensors, Krakow, Poland, May, 2013 Published in: Fifth European Workshop on Optical Fibre Sensors, num. 87943P Series: Proceedings of SPIE Bellingham: Spie-Int Soc Optical Engineering, 2013

A novel configuration for a Brillouin distributed sensor using a phase modulated probe is presented. It offers the combined advantages of a direct implementation using simple devices and a large immunity to noise, shifting the information from the baseband to a higher frequency, which substantially strengthens the robustness to perturbations, interferences and other optical coherent noises. It naturally facilitates the possibility to perform frequency-coding on the probe to realise dynamic and fast measurements, since all frequency tunings are realised at sub-GHz frequencies.

Keywords: Fibre optics ; optical fibre sensors ; distributed fibre sensing ; Brillouin scattering ; Brillouin distributed fibre sensing Reference EPFL-CONF-187357doi:10.1117/12.2026792View record in Web of Science





Author: Lu, Xin; Soto, Marcelo A.; Gonzalez Herraez, Miguel; Thévenaz, Luc

Source: https://infoscience.epfl.ch/record/187357?ln=en



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