scholarly journals Phasorial differential pulse-width pair technique for long-range Brillouin optical time-domain analysis sensors

2014 ◽  
Vol 22 (14) ◽  
pp. 17403 ◽  
Author(s):  
Javier Urricelqui ◽  
Mikel Sagues ◽  
Alayn Loayssa
Keyword(s):  
Long Range ◽  
Time Domain ◽  
Pulse Width ◽  
Time Domain Analysis ◽  
Differential Pulse ◽  
Domain Analysis ◽  
Optical Time

Golay-Differential Pulse Hybrid Coding Technology Based on Brillouin Optical Time Domain Analysis Sensors

2016 ◽  
Vol 36 (8) ◽  
pp. 0806002
Author(s):  
罗源 Luo Yuan ◽  
闫连山 Yan Lianshan ◽  
邵理阳 Shao Liyang ◽  
李宗雷 Li Zonglei ◽  
潘炜 Pan Wei ◽  
...  
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Differential Pulse ◽  
Domain Analysis ◽  
Hybrid Coding ◽  
Optical Time

scholarly journals Effects of Pump-Pulse Width and Temperature on Experimental Brillouin Gain Spectrum Obtained from Brillouin Optical Time-Domain Analysis Sensors

2020 ◽  
Vol 27 (1) ◽  
pp. 69-80
Author(s):  
Abul Kalam Azad
Keyword(s):  
Pump Pulse ◽  
Time Domain ◽  
Pulse Width ◽  
Nonlinear Least Squares ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Gain Spectrum ◽  
Least Squares Curve Fitting ◽  
Brillouin Gain ◽  
Optical Time

In this paper, the characteristics of Brillouin gain spectrum (BGS) obtained from a Brillouin optical time-domain analysis (BOTDA) sensor are investigated and analyzed experimentally. The measured BGSs obtained for various pump-pulse widths and temperatures are fitted with different spectrum profiles using nonlinear least-squares curve fitting technique. The fitting performances of used profiles are presented and analyzed. Based on such performances, the proper spectrum profile to be used in the fitting process is determined and used to extract key parameters of the measured BGSs accurately. The variations of such key parameters with pump-pulse widths and temperatures are also investigated and analyzed. The results reveal that pump-pulse widths and temperatures have significant effects on the extracted key parameters of the measured BGSs obtained from BOTDA sensors. Bangladesh Journal of Physics, 27(1), 69-80, June 2020

scholarly journals Long-range Brillouin optical time-domain analysis sensor employing pulse coding techniques

2010 ◽  
Vol 21 (9) ◽  
pp. 094024 ◽  
Author(s):  
Marcelo A Soto ◽  
Gabriele Bolognini ◽  
Fabrizio Di Pasquale ◽  
Luc Thévenaz
Keyword(s):  
Long Range ◽  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Optical Time
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