Research On Information Packaging Technology Of OTN Optical Channel Layer

Along with the development of optical communication technique and fiber technology, optical communication network plays a critical role in the modern information society. The optical network has developed from SDH business based on electricity layer to OTN, (Optical Transport Network) based on optical transport network. OTN technology as a new optical transport network technologies, inherited and expanded many advantageous features of the existing transmission network. As great drives of data service and OTN technologies become more sophisticated, adopting OTN technology to build a more efficient and reliable transmission network is an inevitable trend.Starting from the structure of transmission network, this paper analyzes the sublayer function of OTN, and the Optical Channel Layer is mainly responsible for the processing tasks of the client interface information. Focusing on the Optical Channel Layer, which in practical applications and information exchange with client interface has an important role and significance.In this paper, Optical Channel Layer information packaging process as the research object, we design and implement the transmission system based on the Optical Channel Layer of OTN to provide a transition solution from the existing SDH network to OTN.The system input SDH signals as client signals, to achieve the access form SDH to the OTN packet features, and with the design of two directions,which makes it more complete and easier to verify. In this design, the overall structure is first proposed, and then we devise it into several module according to the function.The design, based on FPGA technology, uses the Verilog language to describe the system in the implementation stage. Then Functional simulation is carried out by simulation software-Modelsim, and synthesized by synplify. The results verify that this transmission system design is correct, and meet the requirements of the subject.