【摘 要】
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Amorphous SiO2 films were fabricated on Si substrates by flame hydrolysis deposition as buffer layers applied in the planar optical waveguides. Then the Si wafe
【机 构】
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National Integrated Optoelectronics Laboratory, Jilin University, Changchun 130023
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Amorphous SiO2 films were fabricated on Si substrates by flame hydrolysis deposition as buffer layers applied in the planar optical waveguides. Then the Si wafers with the porous particles were put into electric fuace annealing at different temperatures for consolidation in air. The products were characterized by x-ray diffraction,x-ray photoelectron spectroscopy, atomic force microscopy, and variable angle spectroscopic ellipsometry. It was found that different structures at different annealing temperatures were obtained. When the annealing temperature arrives at 1400℃, SiO2 is continuous and dense and the refractive index at 1550nm is 1.4564, which is highly desirable.
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