Sensing Structure Based on Surface Plasmon Resonance in Chemically Etched Single Mode Optical Fibres

dc.contributor.author Luís Carlos Coelho en
dc.contributor.author José Almeida en
dc.contributor.author Santos,JL en
dc.contributor.author Ferreira,RAS en
dc.contributor.author Andre,PS en
dc.contributor.author Diana Viegas en
dc.date.accessioned 2018-01-16T09:17:51Z
dc.date.available 2018-01-16T09:17:51Z
dc.date.issued 2014 en
dc.description.abstract Many optical systems based on surface plasmon resonance (SPR) have been developed for working as refractometers, chemical sensors or even for measuring the thickness of metal and dielectric thin films. Sensors based on SPR present very high sensitivity to refractive index (RI) variations when compared to the traditional RI sensors. However, these kinds of systems are usually large, expensive and therefore cannot be used for remote sensing. Optical fibre sensors based on SPR are usually implemented using multimode optical fibres cope with the requirements for remote sensing. In this section a new type of SPR sensor based in a single mode fibre (SMF) is proposed. A section of the SMF was chemically etched by emersion in a 48 % hydrofluoric acid solution, resulting in a tapering effect, with the cladding removing while the core is kept intact. Simulation results are in good agreement with the experimental spectral resonance dip attained around 1550 nm. Sensitivities of 3800 and 5100 nm/RIU were achieved for the reflection and for the transmission modes, respectively, for RI in the 1.33 to 1.37 range. en
dc.identifier.uri http://repositorio.inesctec.pt/handle/123456789/6244
dc.identifier.uri http://dx.doi.org/10.1007/s11468-014-9811-3 en
dc.language eng en
dc.relation 4636 en
dc.relation 5799 en
dc.relation 5256 en
dc.rights info:eu-repo/semantics/embargoedAccess en
dc.title Sensing Structure Based on Surface Plasmon Resonance in Chemically Etched Single Mode Optical Fibres en
dc.type article en
dc.type Publication en
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