Wensheng Wang, Tigang Ning, Li Pei, Jingjing Zheng, Jianshuai Wang, Huai Wei. Gain Equalization of Few-Mode Fiber Amplifier Based on Genetic Algorithm[J]. Acta Optica Sinica, 2021, 41(9): 0906001
- Acta Optica Sinica
- Vol. 41, Issue 9, 0906001 (2021)
Fig. 1. Fiber radial erbium-doped radius and particle number concentration of each layer. (a) Three-layer erbium-doped structure; (b) four-layer erbium-doped structure
Fig. 2. Gain characteristics of 4M-EDFA. (a) LP01 mode pumping; (b) LP02+LP21 mode pumping
Fig. 3. Gain characteristics of 5M-EDFA. (a) LP02+LP31 mode pumping; (b) LP02+LP21+LP31 mode pumping
Fig. 4. Gain and noise figure of each signal mode change with pump power. (a) 4M-EDFA is pumped in LP01 mode; (b) 4M-EDFA is pumped in LP02+LP21 mode; (c) 5M-EDFA is pumped in LP02+LP31 mode; (d) 5M-EDFA is pumped in LP02+LP21+LP31 mode
Fig. 5. Gain and noise figure of each signal mode change with wavelength of signal. (a) 4M-EDFA is pumped in LP01 mode; (b) 4M-EDFA is pumped in LP02+LP21 mode; (c) 5M-EDFA is pumped in LP02+LP31 mode; (d) 5M-EDFA is pumped in LP02+LP21+LP31 mode
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