The Quality Factor in 2D Anisotropic Photonic Crystal Cavity
|O. Bouleghlimat, A. Hocini
Department of Electronics, University Mohamed Boudiaf of M'sila BP.166, Route Ichebilia, M'sila 28000 Algeria
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|This work focuses on the study of the influence of geometrical parameters on the quality factor of a cavity H1, realized with one missing hole in the center. For obtaining the H1 characteristics and the band structure of the photonic crystal, the finite difference time domain (FDTD) method, which is based on solving Maxwell's equations in a spatially and temporally discretized domain, and plane wave expansion (PWE) method, which is a resolution method of Maxwell equations in the frequency domain, were used respectively. In this method, one simulates a space of theoretically infinite extent with a finite computational cell. The quality factor increases until a maximum value equal 1.23×106 for a filling factor r/a=0.44, and then decreases to a value of 3.39×105 for a filling factor r/a=0.47.|
PACS numbers: 42.70.Qs, 42.82.Et, 42.79.-e.