Engineering of metal-clad optical nanocavity to optimize coupling with integrated waveguides.
We propose a cladding engineering method that flexibly modifies the radiation patterns and rates of metal-clad nanoscale optical cavity. Optimally adjusting the cladding symmetry of the metal-clad nanoscale optical cavity modifies the modal symmetry and produces highly directional radiation that leads to 90% coupling efficiency into an integrated waveguide. In addition, the radiation rate of the cavity mode can be matched to its absorption rate by adjusting the thickness of the bottom-cladding layer. This approach optimizes the energy-flow rate from the waveguide and maximizes the energy confined inside the nanoscale optical cavity.
Myung-Ki
MK
Kim
Zheng
Z
Li
Kun
K
Huang
Ryan
R
Going
Ming C
MC
Wu
Hyuck
H
Choo