2016
DOI: 10.1109/jsen.2015.2424293
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Limits of BOTDA Range Extension Techniques

Abstract: Abstract-Brillouin-based temperature and strain sensors have attracted great attention of both the academic and industrial sectors in the past few decades due to their ability to perform distributed measurements. Particularly, Brillouin Optical Time Domain Analysis (BOTDA) systems have been applied in many different scenarios, proving particularly useful in those requiring especially wide coverage ranging extremely long distances, such as in civil structure monitoring, energy transportation or environmental ap… Show more

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Cited by 23 publications
(16 citation statements)
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“…For instance, the independent use of 1D processing to denoise time-domain traces and then applied to the processed data in frequency domain leads to denoised data points that do not benefit from the similitude and redundancy that can only be found in a 2D or 3D data structure containing the entire measured information. For this reason, the method here proposed offers exceptional denoising capabilities when compared with state-of-the-art techniques 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 , enabling a remarkable and unprecedented SNR enhancement, boosting the sensor performance 24 up to about two orders of magnitude with no loss of relevant information at minor added cost. This translates, for instance, into an unmatched 100-fold improvement in the measurand accuracy of conventional distributed sensors.…”
Section: Discussionmentioning
confidence: 99%
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“…For instance, the independent use of 1D processing to denoise time-domain traces and then applied to the processed data in frequency domain leads to denoised data points that do not benefit from the similitude and redundancy that can only be found in a 2D or 3D data structure containing the entire measured information. For this reason, the method here proposed offers exceptional denoising capabilities when compared with state-of-the-art techniques 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 , enabling a remarkable and unprecedented SNR enhancement, boosting the sensor performance 24 up to about two orders of magnitude with no loss of relevant information at minor added cost. This translates, for instance, into an unmatched 100-fold improvement in the measurand accuracy of conventional distributed sensors.…”
Section: Discussionmentioning
confidence: 99%
“…This translates, for instance, into an unmatched 100-fold improvement in the measurand accuracy of conventional distributed sensors. Furthermore, this multidimensional processing can be freely implemented on top of existing sophisticated methods for performance improvement 33 34 35 36 37 38 39 40 41 42 43 such as optical pulse coding and/or distributed Raman amplification, thus resulting in a fully additional SNR enhancement.…”
Section: Discussionmentioning
confidence: 99%
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“…However, this technique necessarily multiplies the acquisition time, limiting the dynamic performance of the sensor. In addition, there exist in the state of the art other high performance temperature DOFS based on different sensing principles, such as Raman scattering [40,41], Brillouin scattering [42], or even combinations of multiple techniques [43]. While these techniques may be able to provide absolute temperature measurements, they generally provide low resolution temperature measurements, and are not well adapted to dynamic monitoring.…”
Section: Fiber Optic Implementation Of a Hot-wire Anemometermentioning
confidence: 99%
“…Distributed optical fiber sensing (DOFS) systems play indispensable roles in many fields, such as oil and gas industries, geophysical sciences, and structural health monitoring [ 1 ]. The sensing range of DOFS is an important parameter since it reflects the ultimate capability of a system [ 2 , 3 ]. The essence of range extension is the signal-to-noise ratio (SNR) enhancement, so that numerous methods published can be used for the purpose [ 2 ].…”
Section: Introductionmentioning
confidence: 99%