title: Vertical emitting aperture nanoantennas.
abstract: Herein we propose, theoretically investigate, and numerically demonstrate a compact design for a vertical emitter at a wavelength of 1.5 μm based on nanophotonic aperture antennas coupled to a dielectric waveguide. The structure utilizes a plasmonic antenna placed above a Si3N4 waveguide with a ground plane for breaking the up-down symmetry and increasing the emission efficiency. Three-dimensional (3-D) finite-difference time-domain (FDTD) simulations reveal that up to 60% vertical emission efficiency is possible in a structure only four wavelengths long with a 3 dB bandwidth of over 300 nm.
authors.affiliation: Research Laboratory of Electronics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. amiya@mit.edu
authors.forename: Ami
authors.initials: A
authors.lastname: Yaacobi
authors.forename: Erman
authors.initials: E
authors.lastname: Timurdogan
authors.forename: Michael R
authors.initials: MR
authors.lastname: Watts