A 16 m High Bismuth-Doped Fiber Amplifier Provides 47.9 dB Gain in E+S-band. - Shaokun Liu; Xiaoke Yin; Le He; Zhimu Gu; Wenzhen Li; Yang Chen; Yingbin Xing; Yingbo Chu; Nengli Dai; Jinyan Li (OFC, 2024)