Multiple compound Tamm waves with Uller-Zenneck wave characteristics guided by dissipative dielectric defect in periodic multilayered isotropic dielectric material
posted on 2019-05-13, 08:28authored byMuhammad Danyal, Husnul Maab, Arbab Abdur Rahim, Muhammad Mahmood Ali
A canonical problem configured in three different arrangements of periodic multilayered
isotropic dielectric material layers with a dissipative dielectric defect, to guide multiple
compound Tamm waves with Uller–Zenneck wave characteristics, was formulated and solved.
The numerical solutions showed multiple Tamm waves guided at a fixed wavelength along the
dissipative defect with same polarization state. These waves propagate with different phase
speeds, different propagation distances, different field localizations, and different field profiles.
The results identified excitation of symmetric and anti-symmetric solutions of p-polarized Tamm
waves and p- and s-polarized waveguide modes. The high phase speed solutions ceased to exist
beyond a certain limit of dissipative dielectric defect thickness, but the low phase speed solutions
were computed for a wide range of dissipative dielectric defect thickness. The Tamm waves were
compounded when the thickness of defect is very small and transmuted into waveguide modes
for increasing thickness of dissipative dielectric defect because most of the energy is then
strongly confined to the dissipative dielectric defect. The excitation of multiple Tamm waves and
waveguide modes at a given dissipative dielectric defect thickness and fixed wavelength can be
considered for multi-channel optical communication and sensing applications.