Xiaoyue Liu, Shengqian Gao, Chi Zhang, Ying Pan, Rui Ma, Xian Zhang, Lin Liu, Zhenda Xie, Shining Zhu, Siyuan Yu, Xinlun Cai. Ultra-broadband and low-loss edge coupler for highly efficient second harmonic generation in thin-film lithium niobate[J]. Advanced Photonics Nexus, 2022, 1(1): 016001