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2 meter resolution Raman-assisted BOTDA temperature sensor over 100 km with 1.2 ºC uncertainty
Author(s) -
Xabier Angulo-Vinuesa
Publication year - 2012
Publication title -
optica pura y aplicada/óptica pura y aplicada
Language(s) - Spanish
Resource type - Journals
SCImago Journal Rank - 0.147
H-Index - 11
eISSN - 2171-8814
pISSN - 0030-3917
DOI - 10.7149/opa.45.2.145
Subject(s) - raman spectroscopy , metre , remote sensing , environmental science , resolution (logic) , temperature measurement , materials science , geology , optics , computer science , physics , thermodynamics , artificial intelligence , astronomy
Para aumentar significativamente los rangos de medida de los sensores distribuidos basados en\udtecnología BOTDA (Brillouin Optical Time Domain Analysis) se puede emplear la amplificación\udRaman. En este trabajo hemos desarrollado un sensor de temperatura distribuido Brillouin asistido\udpor amplificación Raman de 1er orden capaz de monitorizar 100 km de longitud con una resolución\udde 2 metros. La incertidumbre en cuanto a discriminación de temperatura es de 1,2ºC, incluso en la\udregión de menor contraste. Los valores de los parámetros empleados en este experimento están\udrespaldados por un sencillo modelo analítico, considerando las mayores limitaciones del montaje.In order to increase significantly the measuring range of the distributed sensors based on Brillouin Optical Time Domain Analysis (BOTDA) technology it is possible to employ Raman assistance. In this work we have developed a distributed Brillouin temperature sensor assisted by first-order Raman amplification that measures 100 km range with 2 meter resolution. The uncertainty in temperature discrimination is 1.2oC, even for the position of worst contrast. The parameters used in the experiment are supported by a simple analytical model of the required values, considering the main limitations of the setup

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