Wang, ShengYang, ZhishengZaslawski, SimonThevenaz, Luc2020-07-172020-07-172020-06-2310.1364/OL.397101https://infoscience.epfl.ch/handle/20.500.14299/170214A novel, to the best of our knowledge, postprocessing technique is proposed to extract with a flexible and variable spatial resolution the information from Brillouin optical time-domain analyzers, obtained using a pulse longer than the acoustic settling time. The negative impact of the acoustic transient effect is suppressed, enabling a Brillouin response proportional to the spatial resolution and a Brillouin gain spectrum keeping its natural linewidth. This leads to a better overall sensing performance, in particular for submetric spatial resolutions, with no compromises on sensing range and measurement time.Optical Fiber SensorsBrillouin optical time domain analysisBrillouin scatteringtext::journal::journal article::research article