Taleb Hussein, Abedi Kambiz, Golmohammadi Saeed
Department of Engineering, Islamic Azad University, Ahar Branch, Iran.
Appl Opt. 2011 Feb 10;50(5):608-17. doi: 10.1364/AO.50.000608.
The influence of nonuniform current injection along the active region, on the linear operation of a quantum-dot semiconductor optical amplifier (QD-SOA) is investigated. For this purpose, we have utilized some functions to generate various nonuniform current injection profiles. These profiles have been considered in our numerical calculations, where the rate equation model is employed to construct different characteristics of the QD-SOA. We have found that the gain, as well as the crosstalk, of a QD-SOA is closely associated to the variance of the carrier density along the cavity. Simulation results show that nonuniform current injection can be used as a technique for gain enhancement as well as crosstalk suppression.
研究了沿有源区非均匀电流注入对量子点半导体光放大器（QD - SOA）线性工作的影响。为此，我们利用一些函数来生成各种非均匀电流注入分布。这些分布已在我们的数值计算中加以考虑，其中采用速率方程模型来构建QD - SOA的不同特性。我们发现，QD - SOA的增益以及串扰与沿腔的载流子密度方差密切相关。仿真结果表明，非均匀电流注入可作为一种提高增益以及抑制串扰的技术。
