期刊名称：American Journal of Electrical and Electronic Engineering
印刷版ISSN：2328-7365
电子版ISSN：2328-7357
出版年度：2019
卷号：7
期号：4
页码：94-98
DOI：10.12691/ajeee-7-4-2
语种：English
出版社：Science and Education Publishing
摘要：This paper reviews the concept of coherent optical systems as future digital optical communication systems having capacity of achieving 100Gbps speed. While the transmission capacity increases in wavelength-division multiplexed (WDM) system, coherent technologies have been in large interest in recent years. The interest lies in finding methods of increasing the bandwidth demand with multilevel modulation formats based on coherent technologies. We also discuss about requirements and challenges in implementation of respective digital receivers and associated signal processing.
关键词：optical systems; WDM; coherent; bandwidth; signal processing; digital receivers
