Abstract
The first successful realisation of high-speed travelling-wave BaTiO3 thin-film electro-optic waveguide modulators with 3 dB modulation bandwidth of 15 GHz at 1.55 µm wavelength is reported. Quasi-velocity-matched electrodes for BaTiO3 thin-film modulators are achieved by addition of a SiO2 buffer layer. Its microwave and electro-optic response are characterised.
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