RT Journal Article T1 A Polarization-Independent SPR Fiber Sensor A1 Navarrete Fernández, María Cruz A1 Díaz Herrera, Natalia A1 González Cano, Agustín A1 Esteban Martínez, Óscar AB The resonance of surface plasma waves in metallic layers is a strongly polarization-dependent phenomenon by the very nature of the physical effect responsible of that resonance. This implies the necessity of polarization-controlling elements to be added to any operative surface-plasmon-resonance-based sensor. A fully symmetrical, circular-section double deposition of a metallic and a dielectric layer on a uniform-waist tapered optical fiber (SymDL-UWT) permits us to completely eliminate the dependence on polarization of the plasmon excitation, with the corresponding operative advantages and basic theoretical consequences. We depict the fabrication process of these transducers, which is based on the use of a simple and efficient rotating element developed by us, and show the characteristics of the produced devices. No such device has been depicted up to date. As our experimental results show, this kind of devices can be considered a very good option for the development of simple, compact, and efficient chemical and biological sensors. PB Springer Science+Business Media SN 1557-1955 YR 2010 FD 2010-03 LK https://hdl.handle.net/20.500.14352/44111 UL https://hdl.handle.net/20.500.14352/44111 LA eng NO ©2009 Springer Science + Business MediaThis work has been partially supported by the Spanish Government research project NESTOR (Nuevas tecnologías de sensores de fibra óptica para la observación del medio marino), ref. CTM2004-03899, and Consejería de Educación de la Comunidad de Madrid research projects ROMA (Nueva generación de refractómetros de fibra óptica para aplicaciones medioambientales), ref. GR/AMB/0615/2004, and FUTURSEN ((Bio)sensores químicos avanzados para la medida in situ de la calidad de aguas basados en elementos específicos de reconocimiento y lectura multifuncional integrada), ref. S-0505/AMB-0374, and by Fondo Social Europeo and Fondo Europeo de Desarrollo Regional. NO Spanish Government NO Consejería de Educación de la Comunidad de Madrid NO Fondo Social Europeo NO Fondo Europeo de Desarrollo Regional DS Docta Complutense RD 9 abr 2025