计算机专业毕业设计英文翻译(网络方向).doc

Wide band optical fiber access network trend of development Author: Liu Jinhai article source: Computer universal time: 2005-3-8 文中字体改一致 This article first is brief introduced the world broadband access network develops the condition and the main application, next narrated the wide band optical fiber access network merit. With emphasis has once more analyzed the wide band point-to-point active Ethernet optical fiber system and the wide band to the passive optical fiber system characteristic and the application. Meets down proposed our country optical fiber access network sends chem. possible to surmount APON, BPON and the EPON stage, starts from the wide band point-to-point Ethernet optical fiber system and GEPON, finally and even transits to the GPON stage preliminary idea. Finally analyzed the optical fiber communications technology trend of development from each angle. The broadband access network develops condition and main application In fact, looking from the telecommunication development history, when the network number of users achieves certain scale. Each kind of application meets the nature production; this also is so-called steps the Cuff law might to be at especially. In the history one kind of technology since birth has not been having a big pile of application, regardless of is the mobile communication or the Internet, on its short note, the browsing, the net chats and so on the key applications all is develops certain degree after the user scale to produce naturally, but is not sedulously designs beforehand plans. Since has entered for the 21st century, the whole world broadband access network entered the big development phase. To 2004 years end, the total number of users already achieved 150,000,000, became in the electricity reliable historical account to develop one of quickest telecommunication services, and even was also quicker than the mobile service. For example the whole world mobile service from 10,000,000 developed to 100,000,000 has spent