Investigation of mode characteristics for microdisk resonators by S-matrix and three-dimensional finite-difference time-domain technique
Data(s) |
2006
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Resumo |
The mode characteristics of a three-dimensional (3D) microdisk with a vertical refractive index distribution of n(2)/3.4/n(2) are investigated by the S-matrix method and 3D finite-difference time-domain (FDTD) technique. For the microdisk with a thickness of 0.2 mu m. and a radius of 1 mu m, the mode wavelengths and quality factors for the HE7,1 mode obtained by 3D FDTD simulation and the S-matrix method are in good agreement as n(2) increases from 1.0 to 2.6. But the Q factor obtained by the 3D FDTD rapidly decreases from 1.12 X 10(4) to 379 as n2 increases from 2.65 to 2.8 owing to the vertical radiation losses, which cannot be predicted by the proposed S-matrix method. The comparisons also show that quality factors obtained from the analytical solution of two-dimensional microdisks under the effective index approximation are five to seven times smaller than those of the 3D FDTD as n(2) = 1 and R = 1 mu m. (c) 2006 Optical Society of America. |
Identificador | |
Idioma(s) |
英语 |
Fonte |
Luo XS; Huang YZ; Guo WH; Chen Q; Wang MQ; Yu LJ .Investigation of mode characteristics for microdisk resonators by S-matrix and three-dimensional finite-difference time-domain technique ,JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS,2006,23(6):1068-1073 |
Palavras-Chave | #光电子学 #WHISPERING-GALLERY MODES #LASERS #CAVITIES #APPROXIMATION |
Tipo |
期刊论文 |