Gain characteristics of high-concentration Er3+/Yb3+ -codoped phosphate fiber amplifier

被引：2
|
作者：
Song, F [1 ]
Su, RY [1 ]
Fu, Q [1 ]
Qin, B [1 ]
Tian, JG [1 ]
Zhang, GY [1 ]
机构：
[1] Nankai Univ, Photon Ctr, Tianjin 300071, Peoples R China
来源：
ACTA PHYSICA SINICA | 2005年 / 54卷 / 11期
关键词：
erbium-ytterbium co-doped fiber amplifier; rate equation; propagation equation; high concentration;
D O I：
10.7498/aps.54.5228
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The gain characteristics of Er3+/Yb3+ -codoped phosphate fiber amplifier pumped with light of 980nm wavelength are theoretically studied in this paper. With the help of rate equations and the propagation equation of Er3+/Yb3+ -codoped phosphate fiber, we analyzed the effects of concentration of erbium and ytterbium ions, pump power, signal power and fiber length on the gain characteristics of the co-doped fiber amplifier. Comparison with singly erbium-doped fiber amplifier was also made. It is shown that the sensitization of Yb3+ decreases the clustering effect of erbium ions in the fiber and the gain and pump efficiency of Er3+/Yb3+ co-doped fiber are apparently higher than that of singly erbium-doped fiber. Numerical results also demonstrate that considerable signal gain of 10dB can be achieved in a 3.2cm-long fiber amplifier with 20dBm (100mW) pumping power at 980 nm.
引用
收藏
页码：5228 / 5232
页数：5
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