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Refractive index sensing of aqueous media based on plasmonic resonance in tapered optical fibres operating in the 1.5 μm region

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Díaz Herrera, Natalia and González Cano, Agustín and Viegas, Diana Catarino das Neves and Santos, José Luis and Navarrete Fernández, María Cruz (2010) Refractive index sensing of aqueous media based on plasmonic resonance in tapered optical fibres operating in the 1.5 μm region. Sensors and Actuators B, Chemical, 146 (1). pp. 195-198. ISSN 0925-4005

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Official URL: http://dx.doi.org/10.1016/j.snb.2010.02.036


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Abstract

Experimental results are shown demonstrating that multiple surface plasma waves can be excited in optical fibres at the 1.5 μm optical communications region for the range of refractive indices of aqueous media using doubly deposited tapered fibre structures, well known to exhibit small or zero sensitivity to polarization. Well-defined plasmon dips were obtained with high sensitivity to the surrounding refractive index. This characteristic, together with the substantial flexibility for local and distributed measurement associated with optical fibre sensing supported by the C-Band technology, indicate that these devices can be very advantageously used for chemical, biological and environmental sensing.


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© 2010 Elsevier B.V.
This work has been partially supported by Spanish Government research project NESTOR, ref. CTM2004-03899; Comunidad de Madrid research project FUTURSEN, ref. S-0505/AMB-0374 and by Proyecto de Investigación Santander/Complutense, ref. PR34/07-15886. This work was supported partially by the Portuguese Government - Fundação para a Ciência e Tecnologia (FCT) through the grant SFRH/BD/30086/2006. N. Díaz-Herrera is thankful for the grant within the program ‘Becas Internacionales Universidad Complutense/Empresa Flores Valles 2008′. The authors wish to thank Carmen Cosculluela from Departamento de Física Aplicada of the Universidad de Zaragoza (Spain) and Javier de la Cruz from INESC Porto (Portugal) for helping us with the devices elaboration.

Uncontrolled Keywords:Surface Plasmon Resonance, Fibre Optic Sensors, Third Telecommunications Window
Subjects:Sciences > Physics > Optics
ID Code:24329
Deposited On:23 Jan 2014 11:55
Last Modified:07 Feb 2014 11:16

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