Continuous liquid-level sensor based on a long-period grating and microwave photonics filtering techniques
Fecha
2016Autor
Versión
Acceso abierto / Sarbide irekia
Tipo
Artículo / Artikulua
Versión
Versión aceptada / Onetsi den bertsioa
Impacto
|
10.1109/JSEN.2015.2504131
Resumen
A fiber optic liquid-level sensor based on a long period grating (LPG) is proposed and experimentally validated. The principle of operation is based on a technique used to analyze microwave photonics filters. A 4-cm-long LPG cascaded with a high-reflectivity fiber Bragg grating is employed to achieve a continuous liquid-level sensor. The measurements have been performed using a modulator and a ph ...
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A fiber optic liquid-level sensor based on a long period grating (LPG) is proposed and experimentally validated. The principle of operation is based on a technique used to analyze microwave photonics filters. A 4-cm-long LPG cascaded with a high-reflectivity fiber Bragg grating is employed to achieve a continuous liquid-level sensor. The measurements have been performed using a modulator and a photo-detector with a modest bandwidth of less than 500 MHz, showing a sensitivity of -12.71 dB/cm and a standard deviation of 0.52 dB. One of the significant advantages of such sensing structure is that it is based on low-bandwidth radio frequency and off-the-shelf photonic components. In addition, the simple proposed scheme presents good repeatable performance and proves to be intrinsically robust against environmental changes, stable, and easy to reconfigure. [--]
Materias
Fiber optic sensors,
Liquid level sensors,
Long period gratings,
Microwave photonics filters,
Continuous sensors
Editor
IEEE
Publicado en
IEEE Sensors Journal, 2016, 16(6), 1652-1658
Departamento
Universidad Pública de Navarra. Departamento de Ingeniería Eléctrica y Electrónica /
Nafarroako Unibertsitate Publikoa. Ingeniaritza Elektrikoa eta Elektronikoa Saila
Versión del editor
Entidades Financiadoras
This work was supported in part by the Acción Financiada por el Ministerio de Educación, Cultura y Deporte through the framework of the Programa de Campus de Excelencia Internacional VLC/Campus, in part by the Spanish MINECO under Project TEC2014-60378-C2-1-R, in part by the Grant of the SANTIAGO GRISOLÍA Program, in part by the Research Excellency Award Program GVA PROMETEO 2013/012, in part by the Project TEC2013-43679-R, and in part by an UPNA Predoctoral Grant.