摘要
随着人们对信息的需求爆炸性增长,对光纤传输容量需求的不断提高,频谱资源的合理利用变得越来越重要,高效率的调制格式已成为当前研究重点之一。文章基于光信号表达式,结合复用技术对调制格式进行分析,重点研究分析了双极化四相相移键控、偏振复用十六进制正交幅度调制、轨道角动量三种调制格式的原理和研究应用,最后瞻望了未来高速光通讯的发展。
Withthe explosivegrowth for information demand and the increase for optical transmission capacity, the rational use ofspectrum resourcesis becoming increasingly important, sostudyingthe modulationformats with high bandwidth efficiency has becomeone ofthe currentresearch focus. Starting withthevectorexpressionof optical signal, the modulationformats are classified, the principles and the latest researchdevelopments for DP-QPSK, DP-16QAM and OAM are discussed importantly, and the fu-ture of high-speed opticalcommunications are prospected.
出处
《信息通信》
2016年第2期261-263,共3页
Information & Communications
基金
国家863计划(NO.2007AA01Z258)资助
关键词
调制格式
频谱效率
高速光通信
modulation formats
spectrum efficiency
high-speed opticalcommunications
