宽带光纤接入网的发展趋势.doc

Wide band optical fiber work trend of development
First, this article introduce the world broadband work the condition of develops and the main application, next narrated the wide band optical fiber work merit. With emphasis has once more analyzed the wide band point-to-point active optical fiber system and the wide band to the passive optical fiber system characteristic and the application. Meets down proposed our country optical fiber work sends chem. possible to surmount APON, BPON and the EPON stage, starts from the wide band point-to-point optical fiber system and GEPON, finally and even transits to the GPON stage preliminary idea. Finally analyzed the development trend of optical munications technology from each angle.
The broadband work develops condition and main application
In fact, looking from the munication development history, when work 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 especially. In the history one kind of technology since birth has not been having a big pile of application, regardless of is the munication or the , on its short note, the browsing, 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 work entered the big development phase. To 2004 year's end, the total number of users already achieved 150,000,000, became in the electricity reliable historical account to develop one of quickest munication 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 for years, but the broadband access service has only used for years. According to the IDC forecast, in 2007 the global wide band total user may achieve 209,000,000, in which , namely about 20,000,000