Dynamic BOTDA measurements using Brillouin phase-shift
Fecha
2012Versión
Acceso abierto / Sarbide irekia
Tipo
Contribución a congreso / Biltzarrerako ekarpena
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
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10.1117/12.975011
Resumen
We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift instead of the conventional Brillouin gain. This provides the advantage of measurements that are largely immune to variations in fiber attenuation or changes in pump pulse power. Furthermore, the optical detection deployed can lead to an enhanced precision or measurement ...
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We demonstrate a novel dynamic BOTDA sensor based, for the first time to our knowledge, on the use of the Brillouin phase-shift instead of the conventional Brillouin gain. This provides the advantage of measurements that are largely immune to variations in fiber attenuation or changes in pump pulse power. Furthermore, the optical detection deployed can lead to an enhanced precision or measurement time and to the broadening of the measurement range. Proof of concept experiments demonstrate 1.66 kHz measurement rate with 1 m resolution over a 160 m sensing fiber length. [--]
Materias
Dynamic distributed measurements,
Brillouin phase shift,
BOTDA,
Strain measurements,
Distributed fiber sensor
Editor
SPIE
Publicado en
Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 842125 (October 4, 2012)
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
The authors wish to acknowledge financial support from the Spanish Ministerio de Educación y Ciencia through the
project TEC2010-20224-C02-01 and from the Universidad Pública de Navarra.