The integration of Plasmonic Nano-Resonators (PNRs) to optical fibers tips with thin metallic claddings forming plasmonic slot nano-resonators (PSNRs) is presented. It is shown that the placement of the PSNR at the cut-off radius of the fiber tip for a specific wavelength where the group velocity tends to zero and light slows down leads to an optimization of field's enhancement. Enhancement factors greater than 3x10⁵ were calculated through Finite Element Method (FEM) simulations by placing the PSNR at the cut-off radius and by changing the geometrical characteristics in order to identify optimal conditions for loss minimization that can find many practical applications in nano-optics and sensing.

Date Published: 4 November 2016
PDF: 6 pages
Proc. SPIE 10027, Nanophotonics and Micro/Nano Optics III, 100271G (4 November 2016); doi: 10.1117/12.2246496

Published in SPIE Proceedings Vol. 10027:
Nanophotonics and Micro/Nano Optics III
Zhiping Zhou; Kazumi Wada, Editor(s)