General methods for designing single-mode planar photonic crystal waveguides in hexagonal lattice structures.
We systematically investigate and compare general methods of designing single mode photonic crystal waveguides in a two-dimensional hexagonal lattice of air holes in a dielectric material. We apply the rather general methods to dielectric-core hexagonal lattice photonic crystals since they have not been widely explored before. We show that it is possible to obtain single mode guiding in a limited portion of the photonic bandgap of hexagonal lattice structures. We also compare the potentials of different photonic crystal lattices for designing single-mode waveguides and conclude that triangular lattice structures are the best choice.
Wu
N
N
Javanmard
M
M
Momeni
B
B
Soltani
M
M
Adibi
Ali
A
Xu
Y
Y
Lee
R K
RK