Continuously tunable multigigahertz repetition rate DFB laser pulsations

被引：0
|
作者：
Burkhard, H
Losch, R
Piataev, V
Schlapp, W
Scholl, H
机构：
来源：
HIGH-SPEED SEMICONDUCTOR LASERS FOR COMMUNICATION | 1997年 / 3038卷
关键词：
DFB-laser; corrugation pitch modulation (CPM); multigigahertz pulsations; injection tracking continuous tunability;
D O I：
10.1117/12.271451
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
The generation of short optical pulses with a repetition rate up to 45 GHz has been realized by using a new method based on CW-light injection from one DFB into another CW operated DFB-laser with a proper frequency detuning. Extremely high extinction ratios of the pulsations could be controlled by two parameters: detuning and injection ratio. An optimized construction of the DBF-laser with respect to single-mode output power has been utilized. Two laser structures with ternary compressively strained In70Ga30As/In53Al23Ga24As/InP and quaternary strain compensated In71Al9Ga20As/In34Al21Ga45As/InP multiquantum wells (MQW), respectively, provided very high speed in combination with high (>20 mW) output power, low threshold current (<8 mA) and low temperature sensitivity (T-0 = 90K). Comparison of characteristics showed the advantages of lasers with attain compensated MQWs.
引用
收藏
页码：114 / 120
页数：3
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