title: Mode transition in complex refractive index coated single-mode-multimode-single-mode structure.
abstract: By coating a single-mode-multimode-single-mode (SMS) structure with a high refractive index thin-film it is possible to obtain a transition of modes for specific combinations of thin-film thickness, thin-film refractive index and surrounding medium refractive index, which permits to develop devices with a high sensitivity to specific parameters. In order to gain a better knowledge of the phenomenon the experimental results are corroborated numerically with the Transfer-Matrix-Method. The influence of losses in the thin-film has also been studied. The results obtained prove that a thin-film coated SMS structure is a simple and cost-effective platform for development of sensors and optical filters.
authors.affiliation: Electrical and Electronic Engineering Department, Public University of Navarre, Campus Arrosadia, 31006 Pamplona, NA, Spain. ab.socorro@unavarra.es
authors.forename: Abian B
authors.initials: AB
authors.lastname: Socorro
authors.forename: Ignacio
authors.initials: I
authors.lastname: Del Villar
authors.forename: Jesus M
authors.initials: JM
authors.lastname: Corres
authors.forename: Francisco J
authors.initials: FJ
authors.lastname: Arregui
authors.forename: Ignacio R
authors.initials: IR
authors.lastname: Matias
mesh_terms: D004867:Equipment Design; D019544:Equipment Failure Analysis; D008567:Membranes, Artificial; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods*; D020349:Surface Plasmon Resonance / Q000295:instrumentation* / Q000379:methods*
chemical_list: D008567:Membranes, Artificial