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A slab-modulated sidewall Bragg grating realized by periodically structural corrugation in the sides of silicon slab is demonstrated on a silicon-on-insulator ridge waveguide. Based on this structure, narrow bandwidth can be accurately controlled by varying the distance between the slab grating region and the ridge with high fabrication tolerance. And low side lobes can also be conveniently achieved...
A 2 times 2 optical switch is fabricated using the carrier injection effect of GaAs/AlGaAs material. At 1.55 mum, the extinction ratio exceeds 21 dB for both TE and TM polarizations and the speed is less than 20 ns.
The photonic properties of the silicon-on-glass (SOG) nano-films are analyzed first and the reason why SOG nano-films are required for the nanophotonics is pointed. Then the method to fabricate silicon-on-glass nano-film materials for the applications of nano photonics is established. Anodic boning and selective etching are employed. SOG-based nano-films are then studied.
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