中国光通信产业发展现状

Chinese optical communications industry

产业现状我国的光通信起步较早,70年代初就开始了大气传输光通信的研究,77年,研制出第一根石英光纤.80年代初,中国电信决定建设以光纤为主的干线传输网,首先建设的是1985年宁汉PDH140 Mbit/s光缆通信系统.八五期间干线建设以140 Mbit/s PDH系统为主,全国共建光纤通信干线40万公里,是'七五'期间总数的38.5倍.2000年光缆干线总长度达到1 20万公里,其中中国电信约占70%份额,其余约30%份额由中国联通、网通等公司拥有,共建成一级干线23条,在全国形成'八横八纵'的光缆骨干网实体结构,大多数干线直接采用2.5 Gbit/s系统,它覆盖全国省会以上的城市和70%的地市,全国通信网的传输光纤化比例已高达80%以上,沿海地区很多省光纤已到乡,许多大城市光纤已经通达大楼和住宅小区.

The 21st century is stepping into photonics era.At present,optical communication gets The most extensive application.Beginning with optical communication ,the current situation Of chinese optic-electrical industry and equipment is introduced.The layout and wiring rules Of fiber module are brought to you accompanied by examples.In a far-reaching view,the Dawnig O-MEMS and optical computer technology are also included in this report.At last, Some skill used to maintain optical equipment is discussed.