摘要
综述了高速DWDM(密集波分复用)系统中的关键技术,包括QPSK(四相相移键控)、8QAM(8进制正交幅度调制)和16QAM(16进制正交幅度调制)等新型调制格式、超低损耗光纤/拉曼放大和新型光集成器件,并分析、比较了这些关键技术对DWDM系统传输产生的不同影响。在此基础上,介绍了近年来DWDM大容量传输的一些成功试验。试验表明,这些关键技术有着广阔的应用前景。
This paper first presents an overview of the key technologies for high-rate DWDM transmission systems,including QPSK,8QAM,1 6QAM and other novel modulation formats,ultra-low loss optical fibers/Raman amplification and new opti-cal integrated devices.Then it analyzes and compares the different impacts of these technologies on DWDM system transmis-sion.On this basis,it introduces several successful experiments on large-capacity DWDM transmission in recent years,which shows that these technologies have broad prospects of applications.
出处
《光通信研究》
北大核心
2015年第1期5-8,共4页
Study on Optical Communications
基金
国家"八六三"计划资助项目(2013AA011304)
关键词
密集波分复用通信
新型调制格式
拉曼放大
光集成器件
DWDM transmission
novel modulation format
Raman amplification
optical integrated device
