The orbital angular momentum (OAM) of light can be another physical dimension that we
exploit to make multiplexing in the spatial domain. The design of the OAM mode supporting …

We theoretically propose two orbital angular momentum (OAM) erbium-doped ring-core fiber
(RCF) amplifiers capable of providing relatively uniform gain for 22 modes with 18 OAM …

We propose and analyze a design of multi-OAM-modes ring-core fiber with two guided
modes regions which possess relatively large effective index separations required for the …

We propose a new orbital angular momentum (OAM) erbium-doped fiber amplifier based on
a circular photonic crystal fiber, which can support a total of 18 modes (14 OAM modes) over …

Orbital angular momentum (OAM) mode-division multiplexing (MDM) has recently been
under intense investigations as a new way to increase the capacity of fiber communication …

A step index few-mode erbium-doped fiber (FM-EDF) for mode gain equalization is
designed and proposed in this paper, which uses the layered-doping method to reduce the …

In order to reduce the loss of communication system based on orbital angular momentum
(OAM), an Er 3+-doped photonic crystal fiber (PCF) amplifier which can support amplification …

A unique orbital angular momentum (OAM) optical amplifier based on a ring-core fiber
doped with lead sulfide (PbS) is realized for the first time in this study. The PbS-doped ring …

Paper Title (use style: paper title) Page 1 Two-layer Erbium Doped Annular Photonic Crystal Fiber
Amplifier for Orbital Angular Momentum Multiplexing System Di Han State Key Laboratory of …

Optical fiber is an important transmission medium in optical communication system. We have
designed circular stepindex fiber and circular graded-index fiber for Orbital Angular …