Ultralow Loss Hollow-Core Conjoined-Tube Negative-Curvature Fiber for Data Transmission. - Xiao-cong Wang; Da-wei Ge; Wei Ding; Ying-ying Wang; Shoufei Gao; Xin Zhang; Yi-zhi Sun; Ying-chao Xin; Ju-hao Li; Zhang-yuan Chen; Pu Wang (OFC, 2019)