摘要
分析了一种展宽半导体激光器混沌载波发射机带宽的方案,即混沌光注入的外腔反馈半导体激光混沌发生器。利用数值模拟的方法分析了主从半导体激光器中失谐频率、注入强度、主从激光器偏置电流和从激光器的反馈强度对混沌载波发射机带宽的影响以及主激光器反馈强度对混沌载波信号反馈延时特性的影响。确定了能将混沌有效带宽展宽到25.8GHz的参数组,该带宽约为半导体激光器原始混沌带宽5.1GHz的5倍。
A scheme of broadening the bandwidth of chaotic carrier transmitter in semiconductor lasers, namely, semiconductor lasers with chaotic optical injection is analyzed. The influence of the parameters, such as the detuning frequency, injection strength, bias current and slave laser feedback intensity, on the chaotic carrier transmitter bandwidth and master laser feedback intensity on the time delay signature are analyzed respectively by numerical simulation. The parameter set of which can broad the bandwidth to 25.8 GHz is confirmed, and it is five times than the original bandwidth of 5.1 GHz.
出处
《激光与光电子学进展》
CSCD
北大核心
2017年第6期208-214,共7页
Laser & Optoelectronics Progress
基金
河南省重点科技攻关计划(152102210012)
关键词
激光器
半导体激光器
混沌激光
光注入
带宽
lasers
semiconductor laser
chaotic laser
optical injection
bandwidth
