Next generation optical transmission systems and technologies for the data center Centric Internet

全球IP流量持续增长。未来增长的很大一部分将来自移动平台，即智能手机和平板电脑。驱动容量增长需求的应用包括(i)视频流服务，（ii）基于云的存储和服务，以及（iii）机器对机器应用。自2008年以来，大多数互联网流量都起源于或终止于数据中心（dc），当时点对点流量不再主导互联网应用程序空间。因此，直流输电系统正经历着前所未有的流量增长。自2013年以来，数据中心内的流量增长了80%，由于涉及数据中心的数据中有75%留在数据中心内，因此未来三年的复合年增长率预计为24%。为了满足这种增长，光传输系统提供400gb /s和1.6 Tb/s的比特率

Global IP traffic continues to grow. A significant portion of future growth will come via mobile platforms, namely smart phones and tablets. Applications driving requirements for increased capacity include (i) video streaming services, (ii) cloud based storage and services, and (iii) machine-to-machine applications. Most Internet traffic has originated or terminated in data centers (DCs) since 2008, when peer-to-peer traffic ceased to dominate the Internet application space. As a result DC transmission systems are experiencing unprecedented increases in traffic. Since 2013 intra-DC traffic has grown by 80% and because 75% of the data that involves a DC stays within the DC, the compound annual growth rates for the next three years are projected to be 24%. To meet this growth optical transmission systems that deliver bit rates of 400 Gb/s and 1.6 Tb/s