卫星互联网光电混合交换技术综述

A survey of optical/electric hybrid switching technology for satellite Internet

在激光链路与微波链路共存的空间环境下,卫星互联网光电混合交换的发展有助于推动空天地一体化的建设。针对卫星互联网业务的特点与传输需求,对电域交换技术和光域交换技术的现状进行调研和分析,总结现有交换技术在卫星互联网构建中的适用性。同时,根据分析结果,构建星上的端到端网络,并以此为基础完成星上光电混合架构的设计,主要包括接口、电域适配模块、光域适配模块、光电汇聚模块、光交换模块、分组交换模块与管理控制模块。

In the space environment where laser links and microwave links coexist,the development of satellite Internet optical/electric hybrid switching will help promoting the construction of air-space-ground integration.According to the characteristics and transmission requirements of satellite Internet services,the current status of electrical domain switching technology and optical domain switching technology were investigated and analyzed,and the applicability of existing switching technologies in the construction of satellite Internet was summarized.At the same time,according to the analysis results,the end-to-end network on the satellite was constructed,and based on this,the design of the optical/electric hybrid switching architecture on the satellite was completed.It mainly included the interface,electrical domain adaptation module,optical domain adaptation module,optical/electric convergence module,optical switching module,packet switching module and management control module.