宽带碲基掺铒光纤放大器多信道增益竞争的仿真分析  

Simulation analysis on gain competition among multi-channels of broad-band tellurite-based erbium-doped fiber amplifier

作　　者：周亚训[1] 周淋[1] 陈芬[1] 徐铁峰[1] 聂秋华[1] 

机构地区：[1]宁波大学信息科学与工程学院,浙江宁波315211

出　　处：《光学技术》2006年第2期274-276,279,共4页Optical Technique

基　　金：浙江省自然科学基金资助项目(M603019);浙江省教育厅资助项目(20030491)

摘　　要：对新型宽带碲基掺铒光纤放大器(EDTFA)多信道间的增益演变关系进行了理论仿真。仿真结果表明:EDTFA多信道间的增益存在着一个竞争过程,竞争的强弱取决于碲基掺铒光纤内的能级粒子数分布;当上能级粒子数处于反转分布态时,具有较大的发射截面与吸收截面差值的波长信道拥有相对较大的竞争优势,可获得相对较高的信号增益;当上能级粒子数处于未反转分布态时,具有较大的发射截面与吸收截面比值的波长信道拥有相对较大的增益竞争优势。The simulation analyses on gain relations among muhi-channels of novel broad-band erbium-doped tellurite-based fiber amplifier （EDTFA） are presented theoretically. The simulation results show that there is a gain competitive process among multi-channels which relied on the energy state population distribution of EDTFA. When the upper state population is reversed, the channel with greater difference of emission and absorption cross-section has bigger signal, gain due to its competitive advantage. When the upper state population is not reversed, the channel with greater ratio of emission and absorption cross-section has greater competitive advantage.

关 键 词：碲基掺铒光纤放大器 增益竞争 粒子数分布 

分 类 号：TN256[电子电信—物理电子学] TN929.11