针对宽带碲基掺铒光纤放大器(EDTFA)本征增益谱不平坦特性,研究了采用双级串连结构,并在两段光纤中间加入增益均衡滤波器来实现增益平坦.模拟结果显示,通过设计一定结构的滤波谱,在37信道同时输入的情况下,铒离子掺杂浓度为4000 ppm时,使1536～1608 nm范围带宽内的增益达到了24 dB左右,噪声指数小于5.5 dB,增益谱的不平坦度小于1 dB;铒离子掺杂浓度为6000 ppm时,使1536～1608 nm范围带宽内的增益达到了23.5 dB左右.噪声指数小于5 dB,增益谱的不平坦度小于1dB.优化后的级连EDTFA可以满足WDM系统的要求.
参考文献
| [1] | Zhou Y X,Nie Q H,Xu T F.Theoretical studies on gain characteristics of erbium-doped tellurite-based optical fiber amplifier[J].Chinese Journal of Quantum Electronics (量子电子学报),2003,20(1):94-98 (in Chinese). |
| [2] | Zhou Y X,Nie Q H,Xu T F.Numerical simulations on gain saturation characteristics of erbium-doped tellurite based optical fiber amplifier[J].Acta Photonica Sinica (光子学报),2003,32(6):679-682 (in Chinese). |
| [3] | Zhou Y X,ChEN F,Nie Q H,et al.Theoretical studies on the doped concentration of broadband erbium-doped tellurite-based optical fiber amplifier[J].Chinese Journal of Quantum Electronics (量子电子学报),2005,22(2):261-266 (in Chinese). |
| [4] | Opez-Barbero A P,Arellano-Espinoza W A,Fregnito H L,et al.Tellurite-based optical fiber amplifier analysis using the finite-element method[J].Microwave and Optical Technology Lett.,2000,25(2):103-107. |
| [5] | Mears R J,Baker S R.Erbium fiber amplification and lasers[J].Optical Quantum Electronics,1992,24:517-538. |
| [6] | Ohishi Y,Mori A,Yamada M,et al.Gain characteristics of tellurite-based erbium-doped fiber amplifiers for1.5μm broadband amplification[J].Opt.Lett.,1998,23(4):274-276. |
| [7] | Pasquals F D,Zoboli M,Federighi M,et al.Finite-element modeling of silica waveguide amplifiers with high erbium concentration[J].J.Quantum.Electron.,1994,30:1277-1282. |
| [8] | Xiao Y H,Li Q,et al.An iterative algorithm for transmission function designing of gain flattening filters[J].Chinese Journal of Lasers (中国激光),2001,A28(3):265-268. |
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