面向中短距的高速光传输技术及发展趋势

doi:10.11959/j.issn.1000-0801.2019074

Abstract

Abstract:

The optical fiber communication network is the important infrastructure for the modern information society.Thanks to the reduction of fiber loss,the improvement of transceiver devices by electro-optical-electrical conversion,the development of modulation technology and the introduction of digital signal processing,the capacity of optical fiber transmission has been greatly improved.In recent years,due to the large capacity demand of data-centers and the next-generation wireless communication,metro and short-range transmission scenarios below 100 km have attracted lots of attention based on direct detection.The historical evolution of optical fiber communication systems was firstly reviewed,then the limiting factors in the direct detection system were analyzed.Furthermore,the principle and system configuration of one-dimensional to four-dimensional self-coherent technology were introduced,and finally,the low-cost evolution trend of the optical coherent transmission system was prospected.

Key words: direct detection, self-coherent detection, digital signal processing, multi-dimension multiplexing

CLC Number:

TP393

Lei ZHANG,Yixiao ZHU,Fan ZHANG,Zhangyuan CHEN. Trends and enabling technologies on high-speed metro and short-reach optical transmission systems[J]. Telecommunications Science, 2019, 35(4): 62-73.

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References 21

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发展阶段	第一代	第二代	第三代	第四代
光纤类型	多模光纤	单模光纤	单模光纤	单模光纤/色散位移光纤
工作波长/nm	约850	约1 310	约1 550	1 530~1 565
激光器类型	多纵模	多纵模	单纵模	单纵模
光学色散管理	无	无	有	有
WDM＆EDFA	无	无	无	有
商用系统比特率和传输距离	45 Mbit/s	1.7 Gbit/s	10 Gbit/s	超过40 Gbit/s/λ
	10 km	50 km	80 km	数千公里

Trends and enabling technologies on high-speed metro and short-reach optical transmission systems

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