RT Journal Article T1 Ellipsometric characterization of Bi and Al2O3 coatings for plasmon excitation in an optical fiber sensor A1 Rodriguez Schwendtner, Eva María A1 Álvarez Herrero, Alberto A1 Mariscal Jiménez, Antonio A1 Serna Galán, Rosalía A1 González Cano, Agustín A1 Navarrete Fernández, María Cruz A1 Díaz Herrera, Natalia AB The authors present the results of the ellipsometric characterization of thin layers of bismuth and aluminum oxide deposited over the waist of a tapered optical fiber by pulsed laser deposition. The characteristics of the deposits are studied by spectroscopic ellipsometry. From the effective thicknesses determined by the ellipsometric characterization, it is shown by simulations that surface plasmon resonances (SPRs) can occur in the fiber device, and it is demonstrated experimentally. These results show the feasibility of employing bismuth as a plasmonic material in SPR fiber sensors based on doubly-deposited uniform-waist tapered optical fibers, which show excellent performance and versatility. PB AVS Science and Technology Society; American Vacuum Society SN 2166-2746 YR 2019 FD 2019-11-01 LK https://hdl.handle.net/20.500.14352/5999 UL https://hdl.handle.net/20.500.14352/5999 LA eng NO Ministerio de Ciencia e Innovación (MICINN)/FEDER NO Universidad Complutense de Madrid/Banco de Santander DS Docta Complutense RD 5 may 2024