摘要
利用高频饱和滤波效应和动态载流子恢复时间概念分析了基于半导体光放大器中交叉相位调制的马赫－陈德尔型全光波长变换器的频率啁啾和码间干扰。当采用反向波长变换时，对于不同的探测光功率在维持消光比不变的情况下，变换信号性能较差的原因是较长的载流子恢复时间和较强的码间干扰。但是对于同向波长变换，在大的探测光功率和快的载流子恢复时间的情况下变换信号的性能并不一定好于探测光功率较小时达的变换信号的性能。
By using the high frequency saturation filtering effect and dynamic carrier recovery time, the dependence of the frequency chirping and intersymbol interference (ISI) of a wavelength converter based on cross phase modulation in Mach Zehnder wavelength converter is analyzed. While the extinction ratio is kept the same at different probe power for out phase converting, the poorer performance of the converted signal is due to a longer gain recovery time and the larger intersymbol interference. But for in phase converting, the high probe or fast carrier recovery time is not surely better than that of low probe power.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1999年第1期93-99,共7页
Acta Optica Sinica
基金
国家自然科学基金
邮电部重点科研资助
关键词
全光波长变换
交叉相位调制
半导体
光放大器
all optical wavelength conversion, cross phase modulation, chirp, semiconductor optical amplifier, saturation filtering effect.
