Jiangran Ruan, Li Pei, Jingjing Zheng, Jianshuai Wang, Wenxuan Xu, Jing Li, Tigang Ning. Gain Equalization of 4-Mode Erbium-Doped Fiber Amplifier Based on Cladding Pump[J]. Acta Optica Sinica, 2022, 42(4): 0406001
- Acta Optica Sinica
- Vol. 42, Issue 4, 0406001 (2022)
Fig. 1. Refractive index distribution, erbium ion doping distribution, and mode field distribution in ring core fiber. (a) Refractive index distribution and erbium ion doping distribution in ring core fiber; (b) mode field distribution
Fig. 2. DMG of ring core fiber varying with a1
Fig. 3. DMG of FM-EDFA varying with Δn2 and d
Fig. 4. Gain and DMG of FM-EDFA varying with pump power
Fig. 5. Gain and DMG of FM-EDFA varying with fiber length
Fig. 6. Spectra of 4-mode group of FM-EDFA. (a) Gain and DMG; (b) noise figure
Fig. 7. DMG varying with offsets of N1 and N2
Fig. 8. DMG varying with offsets of a1 and a2
Fig. 9. Distribution characteristic of DMG
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Table 1. Performance comparison of proposed FM-EDFA and other FM-EDFAs
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