Acta Photonica Sinica, Volume. 34, Issue 5, 669(2005)
Analysis of the Single-mode Condition for a Rib SOI Waveguide with a Large Cross Section
The single mode condition for a rib waveguide based on silicon-on-insulator (SOI) is determined through the eigen mode analysis using a finite difference method. This single mode condition gives the relation between the normalized rib height r and the normalized rib width t. A comparison is made between the present result obtained with a FDM and previous analytical formulas for the single mode condition. Simulation results show that the value for the constant in the previous analytical formulas should be chosen as 0.3 when r >0.5. The present single mode condition is also extended to the range of r<0.5 (which is not considered before).
Get Citation
Copy Citation Text
[in Chinese], [in Chinese], [in Chinese], [in Chinese]. Analysis of the Single-mode Condition for a Rib SOI Waveguide with a Large Cross Section[J]. Acta Photonica Sinica, 2005, 34(5): 669