Analysis of basic four-wave mixing characteristics in a semiconductor optical amplifier by the finite-difference beam propagation method
Analysis of basic four-wave mixing characteristics in a semiconductor optical amplifier by the finite-difference beam propagation method
复制标题
有限差分光束传播法分析半导体光放大器基本四波混频特性
DOI：
10.1109/3.880659
复制
发表时间：
2000
影响因子：
2.5
通讯作者：
H. Kawaguchi
中科院分区：
文献类型：
--
作者：
N. Kumar Das;Y. Yamayoshi;H. Kawaguchi
我们通过有限差分光束传播方法（FD-BPM）对半导体光放大器（SOA）中短光脉冲之间的非简并四波混频（FWM）进行了数值分析。我们使用非线性传播方程，考虑了增益谱动态增益饱和度，这取决于载流子抑制、载流子加热、谱烧孔、群速度色散、自相位调制和双光子吸收。为了分析 SOA 中的 FWM，计算了两个不同频率的输入光脉冲在传播过程中在时域和谱域中的演变。从这个模拟中可以清楚地看出，我在这里使用的方法对于模拟 SOA 中的 FWM 特性来说是一种非常有用的技术。我们还发现，如果失谐大于 1 THz，则增益的波长依赖性至关重要。
We have numerically analyzed nondegenerate four-wave mixing (FWM) among short optical pulses in a semiconductor optical amplifier (SOA) by the finite-difference beam propagation method (FD-BPM). We used the nonlinear propagation equation taking into account gain spectrum dynamic gain saturation which depends on carrier depression, carrier heating, and spectral hole-burning, group velocity dispersion, self-phase modulation, and two-photon absorption. To analyze FWM in an SOA, the evolution in time and spectral domain of two input optical pulses with different frequencies during propagation was calculated. From this simulation, it has become clear that the method me used here is a very useful technique for simulating FWM characteristics in SOA's. We also found that the wavelength dependence of the gain is crucial if the detuning is larger than 1 THz.