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Bariáin Aisa, Cándido

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https://academica-e.unavarra.es/handle/2454/48666

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Bariáin Aisa

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Cándido

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Ingeniería Eléctrica y Electrónica

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0000-0003-2865-2855

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289

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Subject: Electronic nose ×

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    PublicationOpen Access
    Volatile organic compound optical fiber sensors: a review
    (MDPI, 2006) Elosúa Aguado, César; Matías Maestro, Ignacio; Bariáin Aisa, Cándido; Arregui San Martín, Francisco Javier; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    Volatile organic compound (VOC) detection is a topic of growing interest with applications in diverse fields, ranging from environmental uses to the food or chemical industries. Optical fiber VOC sensors offering new and interesting properties which overcame some of the inconveniences found on traditional gas sensors appeared over two decades ago. Thanks to its minimum invasive nature and the advantages that optical fiber offers such as light weight, passive nature, low attenuation and the possibility of multiplexing, among others, these sensors are a real alternative to electronic ones in electrically noisy environments where electronic sensors cannot operate correctly. In the present work, a classification of these devices has been made according to the sensing mechanism and taking also into account the sensing materials or the different methods of fabrication. In addition, some solutions already implemented for the detection of VOCs using optical fiber sensors will be described with detail.
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    PublicationOpen Access
    Development of an in-fiber nanocavity towards detection of volatile organic gases
    (MDPI, 2006) Elosúa Aguado, César; Matías Maestro, Ignacio; Bariáin Aisa, Cándido; Arregui San Martín, Francisco Javier; Ingeniería Eléctrica y Electrónica; Ingeniaritza Elektrikoa eta Elektronikoa
    A fiber optic sensor for Volatile Organic Compounds (VOCs) detection has been developed and characterized for some organic gasses. The sensor is based on a novel vapochromic material, which is able to change its optical properties in presence of organic vapors in a reversely way. A nano Fabry Perot is constructed onto a cleaved ended optical fiber pigtail by Electrostatic Self Assembly method (ESA), doping this structure with the vapochromic material. Employing a reflection scheme, a change in the intensity modulated reflected signal at 850 nm have been registered. The response of the sensor has been evaluated for five different VOCs, and a deeper study has been made for vapors of three different alcohols.