摘要
在1.5μm波段自聚焦透镜外腔半导体激光器的特性及其光混频实验中,两只结构相同的外腔半导体激光器经拍频后得到了稳定的中频信号,线宽约为6MHz(平均线宽为3MHz),在不加任何外部稳频措施的情况下,连续观察两小时中心频漂小于100MHz。文中还测得外腔半导体激光器线宽—功率特性及调频响应特性,实验与理论相吻合。且表明,这种结构的激光器可满足FSK相干光纤通信系统的要求。
In this paper, 1.5μm GRINROD external-cavity semiconductor lasers and the beat experiments are reported. A stable intermediate frequency with 6MHz linewidth is obtained by the beating of the two identical external-cavity semiconductor lasers. The drifting of the intermediate frequency is less than 100MHz in 2 hours continuous observation without any external active frequency stabilization. The results show that this kind of external cavity semiconductor laser is practical in FSK coherent optical communication systems. The linewidth-power characteristics and the frequency modulation responsibilities are also studied in this paper using the beating method. The experimental results are in agreement with the previously published theories.
出处
《电子学报》
EI
CAS
CSCD
北大核心
1990年第3期107-110,共4页
Acta Electronica Sinica
