TY - JOUR
T1 - Simulation of Two Dimensional Photonic Band Gaps
AU - Dissanayake, S.E.
AU - Wijewardena Gamalath, K A I L
JF - International Letters of Chemistry, Physics and Astronomy
VL - 24
SP - 58
EP - 88
SN - 2299-3843
PY - 2013
PB - SciPress Ltd
DO - 10.18052/www.scipress.com/ILCPA.24.58
UR - https://www.scipress.com/ILCPA.24.58
KW - Dielectric Contrast
KW - Filling Fraction
KW - GaAs
KW - Gap Maps
KW - Honeycomb Lattice
KW - Lane Wave Expansion
KW - Mode Field Distribution
KW - Photonic Crystal
KW - Square Lattice
KW - Triangular Lattice
AB - The plane wave expansion method was implemented in modelling and simulating the band structures of two dimensional photonic crystals with square, triangular and honeycomb lattices with circular, square and hexagonal dielectric rods and air holes. Complete band gaps were obtained for square lattice of square GaAs rods and honeycomb lattice of circular and hexagonal GaAs rods as well as triangular lattice of circular and hexagonal air holes in GaAs whereas square lattice of square or circular air holes in a dielectric medium ε = 18 gave complete band gaps. The variation of these band gaps with dielectric contrast and filling factor gave the largest gaps for all configurations for a filling fraction around 0.1.The gap maps presented indicated that TM gaps are more favoured by dielectric rods while TE gaps are favoured by air holes. The geometrical gap maps operating at telecommunication wavelength λ = 1.55 μm showed that a complete band gap can be achieved for triangular lattice with circular and hexagonal air holes in GaAs and for honeycomb lattice of circular GaAs rods.
ER -