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۱Optimal Non–uniform Current Injection for Quantum–Dot Semiconductor Optical Amplifiers
نویسنده(ها): ، ،
اطلاعات انتشار: نوزدهمین کنفرانس مهندسی برق ایران، سال
تعداد صفحات: ۶
The influence of non–uniform current injection on the linear operation of a quantum dot semiconductor optical amplifier (QD–SOA) is investigated and optimal current injection profiles are determined. For this purpose, we have utilized some functions to generate various non–uniform 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 QDSOA is closely related to the variance of the carrier density along the cavity. Simulation results show that non–uniform current injection can be used as a technique for gain enhancement as well as crosstalk suppression<\div>

۲Dynamic Response of Quantum–Dot Semiconductor Optical Amplifiers Electrical, Optical, and Electro–Optical Pumping Schemes
نویسنده(ها): ، ،
اطلاعات انتشار: بیستمین کنفرانس مهندسی برق ایران، سال
تعداد صفحات: ۴
In this paper, a comparison is made between the gain response of a quantum–dot semiconductor optical amplifier (QDSOA) under three different pumping schemes (optical, electrical,and electro–optical). We found that under equal pumping powers, the electrical pumping scheme is more efficient thanoptical and electro–optical ones. Simulation results show that the electrical pumping scheme not only provides a higher optical gain compared to two other schemes, but also reduces the gain recovery time of the QD–SOA. Furthermore, the practical implementation of electrical pumping scheme is much simplerthan two other ones<\div>
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