摘要
量子阱激光器具有良好的小信号调制频率响应 ,能作为高速光通信光源采用直接调制方式进行信号传输。与普通半导体激光器一样 ,直接调制将引起啁啾 ,从而影响光纤通信系统的性能。文中对小信号调制下单量子阱激光器的啁啾特性进行了研究和分析。得出了啁啾幅度和啁啾相位与调制频率的关系。对考虑与不考虑啁啾两种情况下 ,光脉冲在常规光纤中传输时的色散特性进行了模拟分析 。
Quantum well laser diodes are of high modulation frequency response.They can be used as light sources and be directly modulated for high bit rate optical communications.As in the case of conventional laser diodes,direct modulation of quantum well laser diodes brings about chirping,which effects the perfomance of optical transmission systems.In this paper,the chirping characteristics of quantum well laser diodes under small signal modulation are studied.Chirping amplitude and phase changes with the modulation frequency are present.Comparison of dispersion properties for optical pulse transmission in conventional single mode fibers is given for both cases with and without chirping noise.It is founded that chirping has relatively great effect on high order dispersion.
出处
《光通信技术》
CSCD
北大核心
2001年第2期143-146,共4页
Optical Communication Technology
