应用相敏光放大克服光孤子传输系统中Gordon-Haus限制的研究  

To overcome Gordon-Haus restriction in soliton transmission system using in-line phase-sensitive amplifiers

作　　者：林洪榕[1] 杨爱霞[1] 钱胜[1] 迟晓玲[1] 李跃辉[1] 

机构地区：[1]南京邮电学院通信工程系,江苏南京210003

出　　处：《量子电子学报》2004年第4期520-527,共8页Chinese Journal of Quantum Electronics

基　　金：江苏省自然科学基金(BK2002032)资助课题

摘　　要：通过计算机系统仿真研究了应用相敏光放大器(PSA)作为在线放大器的光孤子传输系统,并与相应的掺铒光纤放大器(EDFA)光孤子系统作了比较。仿真了平均孤子和动态孤子两种传输方案。研究结果表明,由于PSA不存在ASE噪声,应用PSA作为在线放大器可以克服光孤子系统中的Gordon-Haus限制。对平均孤子,在没有附加其它的孤子控制技术的情况下, PSA系统孤子的稳定传输距离得到极大的延长。对动态孤子, PSA亦表现出良好的抑制脉冲展宽效果,但脉冲的幅度经长距离传输后显著下降。The transmission performance of soliton communication system using phase-sensitive amplifiers (PSAs) as in-line amplifiers has been theoretically analyzed by computer simulation. For comparison, we also simulated the performance of soliton system using erbium-doped fiber amplifiers (EDFAs) as in-line amplifiers. Our simulation considered both average-soliton regime and dynamic-soliton regime. The simulation results show that due to no ASE noise in PSAs, using PSAs as in-line amplifiers in soliton system, the Gordon-Haus restriction has been overcome. For average-soliton, in the condition of no additional soliton control techniques, the soliton stable transmission distance has been lengthened greatly. For dynamic-soliton, PSA also has a good behavior of suppressing pulse broadening. But after long distance transmission, the amplitude of soliton pulse descends significantly.

关 键 词：纤维与波导光学 光孤子传输 相敏光放大器 掺铒光纤放大器 平均孤子 动态孤子 

分 类 号：TN929.11[电子电信—通信与信息系统]