重复脉冲注入下半导体光放大器皮秒增益和折射率非线性的数值模拟  

Numerical Simulation of Picosecond Gain and Index Nonlinearities in Semiconductor Optical Amplifiers Under Repeated Pulse Injection

作　　者：洪伟[1] 黄德修[1] 孙军强[1] 刘德明[1] 

机构地区：[1]华中科技大学光电子工程系,武汉430074

出　　处：《光学学报》2003年第4期459-464,共6页Acta Optica Sinica

基　　金：国家 973项目 (G2 0 0 0 0 36 6 0 5 )资助课题。

摘　　要：对重复周期小于载流子寿命的重复脉冲注入的情况 ,从速率方程出发 ,用分段模型对半导体光放大器的皮秒增益和折射率非线性进行了数值模拟 ,给出了重复脉冲注入下输出光脉冲时域波形的畸变、注入光脉冲引起的增益和相位变化 ,输出光脉冲上的频率啁啾随注入脉冲数增加的变化 ,以及归零光信号码流引起的增益和相位变化。Picosecond gain and refractive index nonlinearities in semiconductor optical amplifiers (SOAs) are simulated for repeated pulse injection case in which the repeatition period is shorter than SOA carrier lifetime. The simulation is implemented by using a multi-section model and starting from the rate equation. The aberration of the temporal profile of the output pulse, gain and phase change induced by pulse injection, and frequency chirp on the output pulse are given for each injected pulse. Gain and phase change induced by return-to-zero (RZ) optical signal stream is also given.

关 键 词：半导体光放大器 重复脉冲注入 皮秒增益 折射率非线性 数值模拟 频率啁啾 半导体激光器 

分 类 号：TN722[电子电信—电路与系统] TN248.4