Fabrication and Characterization of Metal Oxide-Coated Long-Period Fiber Gratings

dc.contributor.author Luís Carlos Coelho en
dc.contributor.author José Luís Santos en
dc.contributor.author Diana Viegas en
dc.contributor.author José Almeida en
dc.date.accessioned 2017-12-20T21:35:24Z
dc.date.available 2017-12-20T21:35:24Z
dc.date.issued 2016 en
dc.description.abstract Sensors 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.identifier.uri http://repositorio.inesctec.pt/handle/123456789/4565
dc.identifier.uri http://dx.doi.org/10.1109/jlt.2016.2540358 en
dc.language eng en
dc.relation 5799 en
dc.relation 5256 en
dc.relation 347 en
dc.relation 4636 en
dc.rights info:eu-repo/semantics/embargoedAccess en
dc.title Fabrication and Characterization of Metal Oxide-Coated Long-Period Fiber Gratings en
dc.type article en
dc.type Publication en
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