Abstract: (6302 Views)
In this paper, confined modes in the photonic crystal nanobeam cavities containing air-holes taper is investigated which support small mode volume and high quality factor (Q). Computational results on this type of photonic crystal nanobeam structure demonstrate further increasing of the Q-value approximately 20550 in the fiber optics telecommunications wavelength range. The maximum Q-values obtained by combination of both nanocavity’s neighboring tapers and ends tapers plus carefully designed air-hole diameters and their non-periodic displacements within the tapered sections. Simulation in this paper is done using COMSOL Multiphysics software based upon the finite element method in the frequency domain.
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