Capacity Scaling Limits and New Advancements in Optical Transmission Systems

被引：1
|
作者：
Zhensheng Jia [1 ]
机构：
[1] Optics Lab
来源：
ZTECommunications | 2013年 / 11卷 / 04期
关键词：
spectral efficiency; Shannon limit; Gaussian noise; optical signal noise ratio; modulation; nonlinearity compensation;
D O I：
暂无
中图分类号：
TN929.1 [光波通信、激光通信];
学科分类号：
0803 ;
摘要：
Optical transmission technologies have gone through several generations of development.Spectral efficiency has significant ly improved,and industry has begun to search for an answer to a basic question:What are the fundamental linear and nonlin ear signal channel limitations of the Shannon theory when there is no compensation in an optical fiber transmission system?Next-generation technologies should exceed the 100G transmis sion capability of coherent systems in order to approach the Shannon limit.Spectral efficiency first needs to be improved be fore overall transmission capability can be improved.The means to improve spectral efficiency include more complex modulation formats and channel encoding/decoding algorithms,prefiltering with multisymbol detection,optical OFDM and Ny quist WDM multicarrier technologies,and nonlinearity compen sation.With further optimization,these technologies will most likely be incorporated into beyond-100G optical transport sys tems to meet bandwidth demand.
引用
收藏
页码：53 / 58
页数：6
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