Title :
Slot and Layer-Slot Waveguide in the Visible Spectrum
Author :
Testa, Genni ; Bernini, Romeo
Author_Institution :
Ist. per il Rilevamento Elettromagnetico dell´Ambiente (IREA), Italian Nat. Res. Council (CNR), Naples, Italy
Abstract :
Slot waveguides based on TiO2 nanowires are numerically analyzed in the visible spectrum. The modal properties and the sensing capabilities of a conventional slot waveguide are investigated at an operating wavelength of 635 nm. Furthermore, a novel slot waveguide configuration called Layer-slot (L-slot) is proposed and discussed. The numerical results show that L-slot waveguides permit to achieve field confinement and sensing properties with values comparable with conventional slot waveguide, but with a strongly simplified fabrication process.
Keywords :
nanophotonics; nanowires; optical fabrication; optical sensors; optical waveguides; titanium compounds; visible spectra; TiO2; fabrication process; layer-slot waveguide; nanowires; optical waveguide-based sensors; sensing capability; visible spectrum; wavelength 635 nm; Filling; Optical device fabrication; Optical refraction; Optical variables control; Optical waveguides; Refractive index; Sensitivity; Slot waveguide; integrated optics;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2011.2165203
