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Various factors influencing operation of the electrooptical (EO) modulator on the basis of polymeric waveguides are considered. It is shown that for correct calculation of characteristics of EO modulators it is necessary to consider dispersion of the radiofrequency (RF) wave, and also influence of heterogeneity of electrooptical polymer poling in electrode structure of the modulator. Numerical calculations...
Surface and quasi-longitudinal acoustic wave properties have been investigated in potassium titanyl arsenate (KTiOAsO 4 , KTA) single crystals for the first time. Surface acoustic wave (SAW) velocity, electromechanical coupling coefficient and power flow angle characteristics have been obtained in rotated Y-cut of KTA crystals. High SAW electromechanical coupling coefficient (0.4%) is found...
By means of effective permittivity function for layered system the frequency dependence of excitation of various acoustic modes in a chalcogenide film As2S3 on rotated 128° Y-cut lithium niobate is investigated.
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