Simultaneous enhancement of dynamic range and sensitivity in slope-assisted Brillouin optical time-domain analyzers via gain spectrum engineering

2020 ◽  
Author(s):  
Cheng Feng ◽  
Xin Lu ◽  
Thomas Schneider
Keyword(s):  
Time Domain ◽  
Dynamic Range ◽  
Gain Spectrum ◽  
Optical Time

Dynamic Range Extension in Slope-Assisted Brillouin Optical Time-Domain Analyzers with Gain Spectrum Engineering

2021 ◽  
Author(s):  
Cheng Feng ◽  
Hari Datta Bhatta ◽  
Roy Davidi ◽  
Xin Lu ◽  
Thomas Schneider ◽  
...  
Keyword(s):  
Time Domain ◽  
Dynamic Range ◽  
Gain Spectrum ◽  
Range Extension ◽  
Optical Time

Gain Spectrum Engineering in Slope-Assisted Dynamic Brillouin Optical Time-Domain Analysis

2020 ◽  
Vol 38 (24) ◽  
pp. 6967-6975
Author(s):  
Cheng Feng ◽  
Hari Datta Bhatta ◽  
Jonathan Bohbot ◽  
Roy Davidi ◽  
Xin Lu ◽  
...  
Keyword(s):  
Time Domain ◽  
Time Domain Analysis ◽  
Domain Analysis ◽  
Gain Spectrum ◽  
Optical Time

Brillouin gain spectrum manipulation using multifrequency pump and probe for slope-assisted BOTDA with wider dynamic range

2022 ◽  
Author(s):  
Kazuki Hoshino ◽  
Daiki Saito ◽  
Yuma Endo ◽  
Takahiro Hasegawa ◽  
Yosuke Tanaka
Keyword(s):  
Dynamic Range ◽  
Time Domain Analysis ◽  
Gain Spectrum ◽  
Optical Pulses ◽  
Shaping Technique ◽  
Pump And Probe ◽  
Spectral Components ◽  
Brillouin Gain ◽  
Linear Slope ◽  
Optical Time

Abstract We propose slope assisted Brillouin optical time domain analysis (SA-BOTDA) with virtual Brillouin gain spectrum (BGS) generated by multifrequency pump and probe. The virtual BGS having a wide linear slope region of 100 MHz is easily generated by employing time-to-space spectral shaping technique that has been originally developed for generating short optical pulses. We demonstrate the distribution of virtual BGS realized by using five spectral components of pump and probe.

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

Extending the Dynamic Range of Sweep-Free Brillouin Optical Time-Domain Analyzer

2015 ◽  
Vol 33 (14) ◽  
pp. 2978-2985 ◽  
Author(s):  
Asher Voskoboinik ◽  
Alan E. Willner ◽  
Moshe Tur
Keyword(s):  
Time Domain ◽  
Dynamic Range ◽  
Optical Time
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