Please use this identifier to cite or link to this item: http://repositorio.inesctec.pt/handle/123456789/4565
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dc.contributor.authorLuís Carlos Coelhoen
dc.contributor.authorJosé Luís Santosen
dc.contributor.authorDiana Viegasen
dc.contributor.authorJosé Almeidaen
dc.date.accessioned2017-12-20T21:35:24Z-
dc.date.available2017-12-20T21:35:24Z-
dc.date.issued2016en
dc.identifier.urihttp://repositorio.inesctec.pt/handle/123456789/4565-
dc.identifier.urihttp://dx.doi.org/10.1109/jlt.2016.2540358en
dc.description.abstractSensors based on long-period fiber gratings (LPFGs) over coated with metal oxide were fabricated and characterized for refractive index (RI) sensing. Oxidation of Ni, Ti, Al, and Cr was monitored in real time by following the features of the LPFG attenuation band. Themetals were deposited simultaneously on top of Si substrates for further chemical and morphological analysis. Wavelength sensitivities (nm/RIU) of about 10 437 at 1.432, 1150 at 1.400, 20 125 at 1.448, and 875 at 1.420 were achieved for LPFGs coated, with 68 nm of Ni, 60 nm of TiO2, 50 nm of Al2O3, and 62 nm of Cr2O3, respectively. For surrounding RI higher than the cladding RI, the wavelength sensitivities are 1937, 6801, 5762, and 3051 nm/RIU at 1.457 for the Ni, Ti, Al, and Cr oxides, respectively. Working as intensity sensing devices sensitivities up to 167 dB/RIU were measured. Metal oxide coated LPFGs leads to wavelength sensitivity enhancement comparing to bare LPFGs and may be used in systems with RI higher than the fiber cladding, a region where bare LPFGs are insensitive.en
dc.languageengen
dc.relation5799en
dc.relation5256en
dc.relation347en
dc.relation4636en
dc.rightsinfo:eu-repo/semantics/embargoedAccessen
dc.titleFabrication and Characterization of Metal Oxide-Coated Long-Period Fiber Gratingsen
dc.typearticleen
dc.typePublicationen
Appears in Collections:CAP - Articles in International Journals
CRAS - Articles in International Journals

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