Abstract

In this paper the propagation mechanism of new type ridged SiGe-OI optical waveguide has been analyzed. Using the numerical solution of effective refractive index, the effective refractive index of ridged SiGe-OI optical waveguide is calculated, and the ridged SiGe-OI optical waveguide structure parameters including the inter ridge height H, outer ridge height h, and ridge width W of waveguide are given when single-mode optical waveguide are transmitted. The model of ridged SiGe-OI optical waveguide is built and analyzed with Optiwave software, and it is verified that SiGe-OI optical waveguide has smaller transmission loss than conventional low-loss optical waveguide, it reduces the transmission losses from 0.5 dB/cm to 0.2593 dB/cm.

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