Browsing by Author "Mercante, Andrew J."
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Item Phase modulation using a titanium dioxide strip on lithium niobate(Optical Materials Express, 2022-08-01) Zhu, Xiaofeng; Nelan, Sean; Mercante, Andrew J.; Shopp, Benjamin; Yao, Peng; Shi, Shouyuan; Prather, Dennis W.In this manuscript, we demonstrate the first phase modulator using titanium dioxide as a strip loaded waveguide on thin-film lithium niobate. The amorphous titanium dioxide was fabricated using RF reactive sputtering followed by a dielectric lift-off process. Two gold electrodes were deposited next to the waveguide by using the same process. This process eliminates the need for plasma etching or high-temperature vapor deposition methods, opening the door to fabrication on sensitive material systems. A propagation loss of 0.156 dB/mm and V𝜋 of 3.2 V at 1550 nm were experimentally measured and reported.