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随着IPTV、3D网络游戏、在线视频浏览、高清电影视频下载等业务的不断出现和普及,传统的ADSL宽带接入技术已经不能完全满足电信用户对于4Mbit/s以上大带宽的需求。而以无源光网络(PassiveOpticalNetwork)即PON为代表的光纤接入技术在技术标准、设备功能与性能、互通性、产业链、成本等方面都有了突破性进展。国内外的主流电信运营商均已开始采用PON技术大力开展宽带接入提速,即“光进铜退”。
With the continuous emergence and popularization of services such as IPTV, 3D online games, online video browsing and high-definition movie and video download, the traditional ADSL broadband access technology can not fully meet the needs of telecom users for large bandwidth of 4 Mbit / s or above. The optical access technology represented by Passive Optical Network (PON), for example, has made breakthroughs in technical standards, equipment functions and performance, interoperability, industrial chain, and cost. The mainstream telecom operators at home and abroad have begun to adopt PON technology to speed up broadband access, that is, “light into the copper back.”