The Performance of Orbital Angular Momentum Mode (|l| = 1~3) Amplification Based on Ring-Core Erbium-Doped Fibers

• DOI: 10.3390/photonics9070491
• Publication Date: 2022-07-14T04:12:40Z
• Authors: Shuaishuai Liu; Liang Zhang; Qi Jiang; Xiaobo Xue; Jianxiang Wen; Wei Chen; Fufei Pang; Tingyun Wang
• Keywords: Erbium

We demonstrated that a ring-core erbium-doped fiber amplifier (RC-EDFA) can support orbital angular momentum (OAM) modes with topological charges (|l| = 1~3). The dependence of the characteristics on length RC-EDF was investigated experimentally, including an investigation gain and 3 dB bandwidth over whole C band (i.e., 1530~1565 nm). improved to 21 nm. At signal wavelength 1550 nm, maximum all up 30.1 dB. Differential modal maintained below approximately 1.3