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A waveguide grating coupler based on a silicon nitride overlay at 1.55 μm for TE polarization is designed. Its coupling efficiency for a fiber is 76%, 1-dB bandwidth is 75 nm and coupling angle is 10°.
We demonstrate that vertically aligned InN nanorods have been grown on Si(111) substrates by plasma-assisted molecular-beam epitaxy (PA-MBE) at low and high growth temperatures (LT- and HT-InN nanorods). High-resolution scanning electron microscopy images clearly show that InN nanorods grown on Si(111) are hexagonal in shape, vertically aligned, well separated and densely distributed on the substrate...
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