Egituren egoeraren monitorizaziorako zuntz optikoan oinarritutako sentsore sinplifikatua
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Brillouin hedatuko denbora eremu optikoaren analisian (BOTDA) oinarritutako sentsoreak, estruktura handien (100 km luzerako estrukturak) deformazioa eta tenperatura neurtzeko gaitasuna dute. Lan honetan, BOTDA konfigurazio sinplifikatua aurkezten dugu. Erabilitako konfigurazioaren helburua sentsorearen prezioa murriztea da, detekzio prozesuan parte hartzen duten seinale optikoen sortze prozesua sinplifikatuz. Proposatutako teknika hau, iturri optiko bati irrati-maiztasun (IM) pultsu modulatu bat aplikatuz sortutako osagai espektralen iragazketa optiko pasiboan oinarritzen da. Laborategiko esperimentuek frogatzen dute tenperatura hedatuko neurriak 1,1 metroko erresoluzioarekin 5 km zuntz optikoan zehar.
Distributed Brillouin optical time domain analysis (BOTDA) sensors can provide high precision distributed measurements of the strain and temperature profile over extremely large structures (structures of 100 km). In this work, we present a simplified configuration for BOTDA sensors. The aim of this configuration is to reduce the cost of the sensor by simplifying the generation of the optical waves involved in the sensing process. The proposed technique is based on passive optical filtering of the spectral components generated in an RF-pulse-modulated optical source. Proof of concept experiments demonstrate distributed temperature measurement with 1.1 m resolution over a 5 km sensing fiber.
Distributed Brillouin optical time domain analysis (BOTDA) sensors can provide high precision distributed measurements of the strain and temperature profile over extremely large structures (structures of 100 km). In this work, we present a simplified configuration for BOTDA sensors. The aim of this configuration is to reduce the cost of the sensor by simplifying the generation of the optical waves involved in the sensing process. The proposed technique is based on passive optical filtering of the spectral components generated in an RF-pulse-modulated optical source. Proof of concept experiments demonstrate distributed temperature measurement with 1.1 m resolution over a 5 km sensing fiber.
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Zuntz optikoko sentsoreak, Brillouin hedatuko sentsoreak, Brillouin denbora eremu optikoaren analisia (BOTDA)., Fiber optics sensors, Brillouin distributed sensors, Brillouin optical time domain analysis (BOTDA).