Single shot OCC-BOTDA based on polarization diversity and image denoising
Sign Up to like & getrecommendations! Published in 2021 at "Optics and Lasers in Engineering"
DOI: 10.1016/j.optlaseng.2020.106368
Abstract: Abstract Brillouin optical time-domain analysis (BOTDA) based on optical chirp chain (OCC) has been proved that it is capable of fast and long range measurement. However, the performance of OCC-BOTDA is also limited by the… read more here.
Keywords: single shot; occ botda; polarization; botda based ... See more keywords
Real-Time Denoising of Brillouin Optical Time Domain Analyzer With High Data Fidelity Using Convolutional Neural Networks
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Lightwave Technology"
DOI: 10.1109/jlt.2018.2876909
Abstract: In recent years, many conventional image denoising techniques have been intensively studied to enhance the signal to noise ratio (SNR) of Brillouin optical time domain analyzer (BOTDA), due to their superior denoising performance to one-dimensional… read more here.
Keywords: time; brillouin optical; domain analyzer; time domain ... See more keywords
Mitigating the effects of the gain-dependence of the Brillouin line-shape on dynamic BOTDA sensing methods.
Sign Up to like & getrecommendations! Published in 2017 at "Optics express"
DOI: 10.1364/oe.25.022206
Abstract: It has been recently shown that in stimulated Brillouin amplification (pulsed pump & CW probe) the line-shape of the normalized logarithmic Brillouin Gain Spectrum (BGS) broadens with increasing gain. Most pronounced for short pump pulses,… read more here.
Keywords: botda; shape; gain; brillouin ... See more keywords
Towards fast sensing along ultralong BOTDA: flatness enhancement by utilizing injection-locked dual-bandwidth probe wave.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.456068
Abstract: Brillouin optical time-domain analysis (BOTDA) using distributed Brillouin amplification (DBA) only requires a milliwatt-level pump to achieve a sensing range beyond 100 km, which provides a powerful tool for temperature/strain sensing. However, similar to the… read more here.
Keywords: injection; dual bandwidth; botda; bandwidth probe ... See more keywords
Comparative study on reduced impacts of Brillouin pump depletion and nonlinear amplification in coded DBA-BOTDA
Sign Up to like & getrecommendations! Published in 2018 at "Chinese Optics Letters"
DOI: 10.3788/col201816.090604
Abstract: The impacts of Brillouin pump depletion and nonlinear amplification in coded long-range Brillouin optical time-domain analysis (BOTDA) based on distributed Brillouin amplification (DBA) were studied. The error of Brillouin frequency shift (BFS) due to Brillouin… read more here.
Keywords: botda; nonlinear amplification; pump depletion; brillouin pump ... See more keywords