Rights managed by AIP Publishing.Rodríguez Schwendtner, E.Álvarez Herrero, A.Mariscal, A.Serna, R.González Cano, A.Navarrete, M. C.Díaz Herrera, N.Unidad de Excelencia Científica María de Maeztu Centro de Astrobiología del Instituto Nacional de Técnica Aeroespacial y CSIC, MDM-2017-07372021-04-142021-04-142019-10-17Journal of Vacuum Science and Technology B 37(6): 062914(2019)1071-1023https://avs.scitation.org/doi/abs/10.1116/1.5121590http://hdl.handle.net/20.500.12666/343The 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. Published by the AVS.enginfo:eu-repo/semantics/article10.1116/1.51215901520-8567info:eu-repo/semantics/restrictedAccess