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Abbasian N, Pourmahyabadi M. Single Mode Photonic Crystal Vertical Cavity Surface Emitting Lasers. ICOP & ICPET _ INPC _ ICOFS 2015; 21 :1533-1536
URL: http://opsi.ir/article-1-755-en.html
URL: http://opsi.ir/article-1-755-en.html
1- Bahonar University of Kerman
Abstract: (3016 Views)
Vertical Cavity Surface Emitting Laser (VCSEL) as a light source for short-range optical communication with the lowest cost is recently considered. Using the photonic crystal structure in VCSELs provides single-mode operation over a wide wavelength range along with high output power. In this paper, these influences are investigated by Finite Difference Time Domain (FDTD) method. It is also shown, the output spectrum will be improved and the side mode suppression ratio will be increased (SMSR) (≈40dB) by using an optimized oxide aperture in photonic crystal VCSEL. In order to eliminate the sided modes and provide the single-mode operation, a novel design in which the air-holes radius of the inner ring of the optical crystal structure is reduced by half, is presented. The achieved result (SMSR ≈60dB) revealed the superior performance of the proposed photonic crystal VCSEL in comparison to the other existing VCSELs.
Keywords: Single mode, Photonic crystal, Side mode suppression ratio, Vertical cavity surface emitting laser
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