Brillouin distributed sensing assisted by Brillouin amplification of pump pulses
Date
2014Version
Acceso abierto / Sarbide irekia
Type
Contribución a congreso / Biltzarrerako ekarpena
Version
Versión aceptada / Onetsi den bertsioa
Impact
|
10.1109/ICSENS.2014.6985369
Abstract
We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the sensor's pump pulses. The technique is based on injecting an extra DBA pump wave in the fiber to generate an additional Brillouin interaction to that used for sensing. Moreover, the ...
[++]
We demonstrate, for the first time to our knowledge, the extension of the measurement range of Brillouin distributed sensors (BDS) by using a distributed Brillouin amplifier (DBA) to compensate the attenuation of the sensor's pump pulses. The technique is based on injecting an extra DBA pump wave in the fiber to generate an additional Brillouin interaction to that used for sensing. Moreover, the bandwidth of the DBA is tailored to fit that of the pump pulses by deploying a wavelength modulation of the DBA pump that is synchronized to the pump. Experimental proof of concept results demonstrate a fivefold enhancement of the measurement range of a BDS, from 10.36 km to more than 50 km in this particular case. Moreover, it is found that the use of the DBA does not introduce any significant penalty in the detection signal to noise ratio, highlighting the potential of the technique to provide much larger sensing lengths. [--]
Subject
Brillouin distributed sensors,
Brillouin optical time domain analysis,
Brillouin amplification
Publisher
IEEE
Published in
IEEE Sensors 2014
Description
Trabajo presentado a IEEE Sensors 2014, celebrado en Valencia (España) del 2 al 5 de noviembre de 2014.
Departament
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Publisher version
Sponsorship
The authors wish to acknowledge the financial support from
the Universidad Pública de Navarra and Spanish Ministerio de
Ciencia e Innovación through the projects TEC2010-20224-
C02-01 and TEC2013-47264-C2-2-R.
Appears in Collections
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