Abstract
The integration of optical devices demands the fabrication of waveguides for
electromagnetic energy below the diffraction limit of light. In this work, we have
investigated the possibility of utilizing specific chains of closely spaced noble metal
nanoparticles for waveguides beyond diffraction limit. Accordingly, we have employed Au
and Ag nanorings in order to transport the optical energy through the plasmon waveguide
at optical C-band spectrum (λ≈1550 nm). In proposed waveguides, we try to select
the best structure via comparison between their transmission losses and group velocities
of propagated energy. Three-dimensional simulations based on finite-difference
time-domain algorithm (FDTD) are used to determine the related geometrical values. It is
shown that nanoring’s geometrical tunability and extra degree of freedom (DoFs) in its
geometry can cause the optical energy to transport at 1550 nm with higher efficiency and
lower losses in comparison with those of the other shapes of nanoparticles such as
nanospheres and nanorods.
© 2013 Optical Society of America
PDF Article
More Like This
Cited By
You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.
Contact your librarian or system administrator
or
Login to access Optica Member Subscription