Chemical solution deposition of electro-optical epitaxial thin films

Our digital world is growing at great speed implying the constant need for improving the network quality, broadening band widths allowing fast data traffic. A vital part in these state-of-the-art optical networks is the electro-optical modulator which is much faster than the classic electrical switches. Based on the concept of tuned constructive and destructive interaction of light waves, the electro-optical modulator can act as a fast optical switch allowing fast data communication. This optical modulator are build-up of materials possessing high Pockels coefficients such as graphene, LiNbO₃, Pb(Zr,Ti)O₃, ... . In this project, we aim at the integration of the electro-optical BaTiO₃ material with an exceptional Pockels coefficient on state-of-the-art SiN photonic platforms by the low-cost and efficient ink-jet printing method. This allows the construction of a 2D electro-optic thin BaTiO₃ layer pattern on SiN platforms without the use of additional etching steps which paves the path towards industrial integration.