Ferroelectric ${\mathrm{BaTiO}}_3$ (BTO) thin films are grown by RF sputtering onto an indium tin oxide bottom electrode on a MgO single-crystal substrate. We have studied here the optical properties by the prism coupling technique. We report the ordinary and extraordinary refractive indices of the films, the film thickness, and the optical losses that are obtained on the planar waveguides: $n_0=2.224\pm 0.001$ and $n_e=2.219\pm 0.001$ at 1539 nm. Furthermore, in order to demonstrate the active property of the BTO films, we have investigated the electro-optic (EO) properties by using the change of the resonant coupling angle (variation of fundamental ${\mathrm{TE}}_0$ guided mode) when the transverse electric field is applied. The latter is induced by the refractive index variation ($\mathrm{\Delta }n$) caused by the EO effect when a static electric field is applied transversely to the film. The EO coefficient obtain is about $18\mathrm{pm}/\mathrm{V}$ for TE mode and $23\mathrm{pm}/\mathrm{V}$ for TM modes at 1539 nm. This value illustrates the suitability of the BTO material thin film with a polycrystalline structure for applications such as modulations, switching, and interconnections.

© 2013 Optical Society of America

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

You do not have subscription access to this journal. Article level metrics are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Log in to access OSA Member Subscription

Related Journal Articles

• Growth and property characterizations of photonic crystal structures consisting of colloidal microparticles (JOSAB)
• Scattering of light from a two-layer system with a rough surface (JOSAA)
• Optical fully leaky mode characterization of a standard liquid-crystal cell (JOSAB)
• Photosensitivity of lead germanate glass waveguides grown by pulsed laser deposition (OL)
• Electro-optic phase modulation in ridge waveguides of epitaxial K_0.95Na_0.05Ta_0.71Nb_0.29O₃ thin films (OE)

Related Conference Papers

• Optical characterizations of thin films for gas sensors
• Characterizations of thin films for optical microcomponents
• Transmission line analysis of guided and leaky mode prism coupling data from anisotropic multilayer films
• Influence of annealing temperature on the properties of Ga2O3:Cu films
• Bountiful Surface Waves with Sculptured Thin Films