Design of Orbital Angular Momentum (OAM) Erbium Doped Fiber Amplifier with Low Differential Modal Gain

2015 ◽  
Author(s):  
Jingwen Ma ◽  
Fei Xia ◽  
Shuhui Li ◽  
Jian Wang
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Fiber Amplifier ◽  
Modal Gain ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped

Optimizing the Erbium Doped Profile to Equalize the Modal Gain in Few Mode Erbium Doped Fiber Amplifier

2016 ◽  
Vol 53 (3) ◽  
pp. 030602 ◽  
Author(s):  
赵清华 Zhao Qinghua ◽  
张振振 Zhang Zhenzhen ◽  
赵宁波 Zhao Ningbo ◽  
李小英 Li Xiaoying
Keyword(s):  
Fiber Amplifier ◽  
Modal Gain ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped

scholarly journals Two-Layer Erbium-Doped Air-Core Circular Photonic Crystal Fiber Amplifier for Orbital Angular Momentum Mode Division Multiplexing System

Crystals ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 156 ◽  
Author(s):  
Hu Zhang ◽  
Di Han ◽  
Lixia Xi ◽  
Zhuo Zhang ◽  
Xiaoguang Zhang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Photonic Crystal ◽  
Photonic Crystal Fiber ◽  
Orbital Angular Momentum ◽  
Noise Figure ◽  
Fiber Amplifier ◽  
Crystal Fiber ◽  
Mode Division Multiplexing ◽  
Erbium Doped ◽  
Fabrication Tolerance

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. In this paper, a two-layer Erbium-doped fiber amplifier (EDFA) for an OAM multiplexing system is proposed. The amplifier is based on the circular photonic crystal fiber (C-PCF), which can maintain a stable transmission for 14 OAM modes by a large index difference between the fiber core and the cladding. Further, the two-layer doped region can balance the amplification performance of different modes. The relationship between the performance and the parameters of the amplifier is analyzed numerically to optimize the amplifier design. The optimized amplifier can amplify 18 modes (14 OAM modes) simultaneously over the C-band with a differential mode gain (DMG) lower than 0.1 dB while keeping the modal gain over 23 dB and noise figure below 4 dB. Finally, the fabrication tolerance and feasibility are discussed. The result shows a relatively large fabrication tolerance in the OAM EDFA parameters.

Amplification of 14 orbital angular momentum modes in ring-core erbium-doped fiber with high modal gain

2021 ◽  
Author(s):  
Xi Zhang ◽  
Jun Liu ◽  
Shi Chen ◽  
Cheng Du ◽  
Wei Li ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Modal Gain ◽  
Erbium Doped ◽  
Ring Core

scholarly journals Accurate modal gain control in a multimode erbium doped fiber amplifier incorporating ring doping and a simple LP_01 pump configuration

2012 ◽  
Vol 20 (19) ◽  
pp. 20835 ◽  
Author(s):  
Qiongyue Kang ◽  
Ee-Leong Lim ◽  
Yongmin Jung ◽  
Jayanta K. Sahu ◽  
Francesco Poletti ◽  
...  
Keyword(s):  
Gain Control ◽  
Fiber Amplifier ◽  
Modal Gain ◽  
Erbium Doped Fiber Amplifier ◽  
Erbium Doped

scholarly journals Amplifying Orbital Angular Momentum Modes in Ring-Core Erbium-Doped Fiber

Research ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-12 ◽  
Author(s):  
Jun Liu ◽  
Shi Chen ◽  
Hongya Wang ◽  
Shuang Zheng ◽  
Long Zhu ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Wavelength Division Multiplexing ◽  
Fiber Amplifier ◽  
Phase Shift Keying ◽  
Fiber Optic Communications ◽  
Wavelength Division ◽  
Erbium Doped ◽  
Shift Keying ◽  
Ring Core

Lots of research efforts have been devoted to increase the transmission capacity in optical communications using orbital angular momentum (OAM) multiplexing. To enable long-haul OAM mode transmission, an in-line OAM fiber amplifier is desired. A ring-core fiber (RCF) is considered to be a preferable design for stable OAM mode propagation in the fiber. Here, we demonstrate an OAM fiber amplifier based on a fabricated ring-core erbium-doped fiber (RC-EDF). We characterize the performance of the RC-EDF-assisted OAM fiber amplifier and demonstrate its use in OAM multiplexing communications with OAM modes carrying quadrature phase-shift keying (QPSK) and quadrature amplitude modulation (QAM) signals. The amplification of two OAM modes over four wavelengths is demonstrated in a data-carrying OAM-division multiplexing and wavelength-division multiplexing system. The obtained results show favorable performance of the RC-EDF-assisted OAM fiber amplifier. These demonstrations may open up new perspectives for long-haul transmission in capacity scaling fiber-optic communications employing OAM modes.

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