FRLP - CIENCIAS BÁSICAS

Permanent URI for this collectionhttp://48.217.138.120/handle/20.500.12272/9849

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Author: search.filters.author.Alustiza, Diego

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    Experimental fiber optic humidity sensor with applicability to civil structures health monitoring
    (2023) Alustiza, Diego; Mineo, Marcos; Arce, Valeria Beatriz; Villa Pérez, Cristian; Russo, Nélida Araceli
    This paper presents the results obtained in the execution of the first steps of the functional evaluation process of a fiber optic relative humidity sensor. The sensor device was a long period fiber grating (LPG) whose manufacturing process is described. Information is provided on how a humidity sensitivity level was reached that allows relative humidity (RH) measurements to be made. Packaging design implemented is described. Experimental arrangements used for thermal characterization and for humidity response are described. The results are discussed highlighting the details of the experimental setup to be improved in the future. Finally, the conclusions that qualify the feasibility of the implementation of an embedded humidity sensor in concrete structures by using this type of technology are provided.
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    Characterization of long period gratings manufactured with fiber optic fusion splicer for sensor development
    (2021) Alustiza, Diego; Mineo, Marcos; Russo, Nélida Araceli
    A Long Period Grating (LPG) is a structure inscribed in an optical fiber that is of great interest in the field of communications and sensors. At Centro de Investigaciones Ópticas (CIOp), an LPG manufacturing process was implemented. It is based on use of electric arcs produced with an optical fiber splicer to generate a series of physical disturbances that modify optical fiber behavior as a light transmis-sion guide. Since transmission response of LPG is sen-sitive to fiber environment conditions, it can be used to detect changes in certain physical and chemical pa-rameters. In particular, it enables the implementation of optical sensors sensitive to temperature, surround-ing medium refractive index and axial deformation. Characterization of locally generated LPGs is essen-tial for future design of sensors applicable in many engineering areas. In this article, typical LPG sensi-tivities to the three mentioned parameters are re-ported.