Single-polarization terahertz hollow-core anti-resonant fiber with ultra-high polarization loss ratio. - Yao, Xiaotian; Liu, Qiang; Sun, Guangrong; Xing, Peiqing; Liu, Wei; Lv, Tingting; Sun, Yudan; Lv, Jingwei; Chu, Paul K.; Liu, Chao (Journal of Applied Physics, 2026)