Xi Zhang, Jun Liu, Wei Li, Cheng Du, Jian Wang. Experimental Demonstration of Amplifying 14 Orbital Angular Momentum Modes in Ring-Core Erbium-Doped Fiber with High Modal Gain. In European Conference on Optical Communication, ECOC 2021, Bordeaux, France, September 13-16, 2021. pages 1-4, IEEE, 2021. [doi]
Abstract is missing.