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Y 3 Al 5 O 12 (YAG) thin films are prepared by the sol–gel process using two different synthesis routes: acetate–alkoxide method (YAG-I) and two-alkoxides method (YAG-II). The sols and films elaborations are described. The film behavior is studied by X-ray diffraction (XRD) and conventional transmission electron microscopy (CTEM) for different annealing temperatures. Differential...
Ti-indiffused LiNbO 3 waveguides have been used for various high speed optical devices, such as modulators, switches and sensors, because of their electro-optic effect. In order to broaden the modulation bandwidth of an optical modulator above 10GHz, both impedance matching and optical and RF phase velocity matching should be obtained at the high frequency range. This can be obtained by increasing...
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