数据中心光通信技术

doi:10.11959/j.issn.1000-0801.2016154

Abstract

Abstract:

Due to the fast growth of internet services,datacenter related traffic has become the major part of the global network traffic.As a main technology for high-speed data transmission,optical communication technologies have been widely used in today's datacenter networks,from a few meter server-to-server interconnects to transoceanic datacenter-to-datacenter optical networks.Here the optical communication technologies for datacenters were reviewed,including technologies connecting datacenters in wider-area networks and metro-area networks as well as optical interconnect technologies within datacenters,and the advantages and disadvantages of some technologies in the networks were discussed.

Key words: datacenter, optical communication, wide-area network, metro-area network, optical transceiver

Chongjin XIE. Optical communication technologies for datacenters[J]. Telecommunications Science, 2016, 32(5): 44-51.

Figures/Tables 12

References 22

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类别	电信运营商	数据中心
距离	＜600 km	＜80 km
节点	多达几十个	3～4
网络	环网，mesh，大量使用ROADM	点对点，很少ROADM
业务	语音、移动、数据、企业用户等，业务颗粒种类多	数据中心之间数据传输、Ethernet、颗粒单一
容量	中等	大

技术	激光器	光纤（双向）	波长数	接头	最大传输距离/m
SR4	VCSEL	8根MMF	1	多模MPO	100～300
SWDM4	VCSEL	2根MMF	4	多模LC	100～300
PSM4	DFB激光器	8根SMF	1	单模MPO	500
CWDM4	DFB激光器	2根SMF	4	单模LC	2 000

Optical communication technologies for datacenters

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