Theoretical study of frequency chirping and extinction ratio of wavelength-converted optical signals by XGM and XPM using SOA's
Theoretical study of frequency chirping and extinction ratio of wavelength-converted optical signals by XGM and XPM using SOA's
复制标题
使用 SOA 通过 XGM 和 XPM 对波长转换光信号的频率啁啾和消光比进行理论研究
DOI：
10.1109/3.777223
复制
发表时间：
1999
影响因子：
2.5
通讯作者：
Jichai Jeong
中科院分区：
文献类型：
--
作者：
Hanlim Lee;H. Yoon;Yonggyoo Kim;Jichai Jeong
我们使用交叉增益调制 (XGM) 和交叉相位调制 (XPM) 开发了基于半导体光放大器 (SOA) 的波长转换器的完整大信号动态模型。大信号动态模型已使用改进的传输矩阵方法（TMM）实现。该模型考虑了每个小部分的载流子引起的折射率、n 参数、内反射、光子密度和放大的自发发射噪声的纵向变化。因此，我们可以准确地估计频率啁啾、光脉冲模式、消光比以及 SOA 的动态特性。已经针对各种参数（例如信号功率和波长、CW 功率和波长以及面反射率）计算了频率啁啾和消光比。调制带宽（由 3 dB 下降定义为眼图张开比 (EOR)）通过电流密度、限制因子和腔长度进行研究。
We develop a complete large-signal dynamic model of semiconductor optical amplifier (SOA)-based wavelength converters using cross-gain modulation (XGM) and cross-phase modulation (XPM). The large-signal dynamic model has been implemented using the modified transfer matrix method (TMM). This model takes into account longitudinal variations of carrier-induced refractive index, n-parameter, internal reflection, photon density, and amplified spontaneous emission noise at each small section. Therefore, we can accurately estimate frequency chirping, optical pulse patterns, and the extinction ratio as well as the dynamic characteristics of SOA's. Frequency chirping and the extinction ratio have been calculated for various parameters such as signal power and wavelength, CW power and wavelength, and facet reflectivity. Modulation bandwidth, defined by the 3-dB drop as the eye opening ratio (EOR) is investigated with current density, confinement factor, and cavity length.