Effect of doping and energy detuning on the gain and crosstalk of quantum dot gain-clamped semiconductor optical amplifiers

被引：0
|
作者：
Qasaimeh, Omar [1 ]
机构：
[1] Jordan Univ Sci & Technol, Dept Elect Engn, Irbid 22110, Jordan
来源：
OPTICAL AND QUANTUM ELECTRONICS | 2015年 / 47卷 / 08期
关键词：
Quantum dot; Gain-clamped; Doping; Detuning; Crosstalk; Semiconductor optical amplifier; A-WELL; MODULATION; CONVERSION; RECOVERY;
D O I：
10.1007/s11082-015-0180-8
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The spectral characteristics of the linear gain and the small-signal crosstalk of positively detuned and negatively detuned quantum dot gain-clamped semiconductor optical amplifiers (QDGC-SOA) have been studied. Our analysis reveals that the linear gain of the ground-state in positively detuned QDGC-SOA can be enhanced by doping the dots by p-type concentration, while the linear gain of the excited-state in negatively detuned QDGC-SOA can be enhanced by doping the dots by n-type concentration. The small-signal crosstalk is found to be proportional to the amplification where we find that positively detuned QDGC-SOA exhibits less crosstalk (by at least 3 dB) than negatively detuned QDGC-SOA. In addition, we find that positively detuned QDGC-SOA is capable of providing larger optical gain.
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页码：2921 / 2936
页数：16
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