Ridge waveguide using highly oriented BaTiO₃ thin films for electro-optic application

Peer review under responsibility of The Ceramic Society of Japan and the Korean Ceramic Society.

Figures & data

Scheme 1 Schematic diagram of SiO₂ strip loaded BaTiO₃ ridge waveguide structure.

Fig. 1 X-ray diffraction pattern of BaTiO₃ thin films with various thicknesses.

Table 1 Optical properties of BaTiO₃ films.

Mode	n	a (dB/cm)
TE	2.198	3–5
TM	2.217	>15

Fig. 2 Ordinary and extraordinary indices of BaTiO₃ thin films as a function of wavelength.

Fig. 3 Transmitted optical power at 1550 nm as function of applied voltage demonstrating electro-optic effect in BaTiO₃ thin film waveguides.

Fig. 4 SiO₂ strip loaded ridge waveguide patterned on highly oriented BaTiO₃ thin films grown on MgO single crystal substrate.