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High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber Optic Couplers

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High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber Optic Couplers

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dc.contributor.author	Hernández-Arriaga, M. V.
dc.contributor.author	Bello-Jiménez, M.
dc.contributor.author	Rodríguez-Cobos, A.
dc.contributor.author	López-Estopier, R.
dc.contributor.author	Andrés, Miguel V.
dc.date.accessioned	2018-04-10T11:35:05Z
dc.date.available	2018-04-10T11:35:05Z
dc.date.issued	2017	es_ES
dc.identifier.citation	M. V. Hernández-Arriaga, M. Bello-Jiménez, A. Rodríguez-Cobos, R. López-Estopier y M. V. Andrés, "High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber Optic Couplers", IEEE Sensors Journal, Vol. 17, pp. 333-339, 2017	es_ES
dc.identifier.uri	http://hdl.handle.net/10550/65544
dc.description.abstract	In this paper, a simple and compact fiber-optic sensor based on an overcoupled tapered fiber coupler is studied. The coupler is fabricated to be operated well beyond the initial coupling cycles, where the rapid exchange of energy between outputs ports enable the fabrication of a highly sensitive device. The suitability and sensitivity of the proposed scheme is demonstrated by measuring refractive index (RI) variations of sugar concentrations in water. The device presents a linear response in terms of power transmission or wavelength shift versus RI changes. The best achieved sensitivity is 0.442 units of normalized transmission per unit of sugar concentration, with a noise detection limit of 0.003 weight percentage of sugar concentration (wt %). From this result the minimum detectable RI change is estimated as 5 × 10-6 RI unit (RIU). The sensor can be also wavelength-encoded, exhibiting a sensitivity of 2171 nm/RIU, maintaining a linear response in a large range of RI. These experimental results are within the best results reported in the framework of fiber couplers and modal interferometer-based RI sensors	es_ES
dc.language.iso	en	es_ES
dc.subject	Couplers	es_ES
dc.subject	Optical fiber sensors	es_ES
dc.subject	Optical fiber couplers	es_ES
dc.subject	Couplings	es_ES
dc.title	High Sensitivity Refractive Index Sensor Based on Highly Overcoupled Tapered Fiber Optic Couplers	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::FÍSICA::Óptica ::Fibras ópticas	es_ES
dc.identifier.doi	10.1109/JSEN.2016.2629281	es_ES
dc.type.hasVersion	AM	es_ES