Based On The Technology Of PON Chinaunicom Access Network Application Research

After 1990's,Dense Wavelength Division Multiplexing technology develops rapidly,and promotes optical fiber communication develop to a higher level.As an important transfer basis for communication field and information field in the future,optical fiber has self-evident significance.What currently need to be solved is how to give full play to bandwidth advantages to utilize its widespread transmission resources,and finally promote bandwidth transmission technology to improve further.As a kind of end-to-end all optical route,the transmitting process of All Optical Network has no photovoltaic conversion and photoelectric transducer.Its theory is signal path where the signal is from the middle of the network to user node is a form of ray,instead of making information transmission in way of successive transmission of photoelectricity.All Optical Network has two basic structures,respectively optical network layer and electric network layer.Generally,optical network layer generally means the part connected to optical link.Depending on DWDM technology,it is possible to transfer several optical signals with different wave length in the same optical networks.Among its grid node is generally optical cross connect(OXC).It is not difficult to find that in future communication service and information industries,broadband network has great possibility to be big pattern combining all optical network and IP service network;based on these optical network technologies,the thesis mainly discusses in the following aspects.First,it makes detailed introduction of basic theories of passive optical network.During early design of the thesis,I read plenty of technology books and materials relevant to passive optical network at home and abroad,where I know about its current latest technology.Passive optical network in the whole thesis is different from traditional technology of transport network.Its superiority mainly reflect on as below: optical network transmission for the whole process,long transmission distance,high quality network bandwidth,excellent network security,carrying multiple business modes and fiber to the home or to the desk.These technological superiority determines design and construction of the whole network advance with the times,and accord with rapid development trend of modern network techniques.Secondly,based on the theoretical basis of current communication network technology,under the historical background of global development for optical network,it provides optimal solutions for FTTX,which offers the users convenient,rapid and high-speed network access experience.It optimizes various network equipment to make them give play to their maximal efficiency,meanwhile it reduces the cost of network construction.Building a set of network with high cost performance is the core idea for the design of this thesis.Meanwhile,the thesis makes different schematic design aimed at different application scenarios.Taking full advantage of the existing network resources,with the premise of small investment,it remarkably improves network efficiency,and satisfies the requirements of people in modern society for rise in network speed.Finally,I will have summary and outlook for main work of this thesis.