[CTuA11C] Thin-film LN and AlN Devices

[CTuA11C-04] [No-show]Low-loss Adiabatic Couplers on Thin-Film Lithium Niobate with Benzocyclobutene (BCB) Waveguide

*Hao Liu¹, Xuecheng Liu¹, Bing Xiong¹, Changzheng Sun¹, Zhibiao Hao¹, Lai Wang¹, Jian Wang¹, Yanjun Han¹, Hongtao Li¹, Yi Luo¹ (1. Tsinghua Univ. (China))

[Presentation Style] Online

Adiabatic fiber-to-chip edge coupler based on BCB guiding waveguide and bilayer thin-film lithium niobate (TFLN) taper is proposed, and ultra-low coupling loss of 0.9 dB/facet between 3.5-μm mode-field-diameter (MFD) fiber and TFLN waveguide is recorded.