title: Comprehensive numerical analysis of a surface-plasmon-resonance sensor based on an H-shaped optical fiber.
abstract: We present and numerically characterize a surface-plasmon-resonance sensor based on an H-shaped optical fiber. In our design, the two U-shaped grooves of the H-fiber are first coated with a thin gold layer and then covered by a uniform titanium dioxide layer to facilitate spectral tuning of the device. A finite element method analysis of the sensor indicates that a refractive-index resolution of up to 5 · 10(3) nm/RIU can be obtained.
authors.affiliation: Fiber Optics Group, Department of Micro and Nanosciences, Aalto University, PO Box 13500, FI-00076 Aalto, Finland. mikhail.erdmanis@aalto.fi
authors.forename: Mikhail
authors.initials: M
authors.lastname: Erdmanis
authors.forename: Diana
authors.initials: D
authors.lastname: Viegas
authors.forename: Markus
authors.initials: M
authors.lastname: Hautakorpi
authors.forename: Steffen
authors.initials: S
authors.lastname: Novotny
authors.forename: José Luis
authors.initials: JL
authors.lastname: Santos
authors.forename: Hanne
authors.initials: H
authors.lastname: Ludvigsen