Research And Implementation Of Core Node In Self-Aware Optical Networks

In a widely used Internet technologies today,the rapid growth of Internet data traffic network requires more bandwidth than ever before. Moreover,the operating characteristics of different needs has strong impact on the transmission network technologies.This is because the data service with the self-similarity, asymmetry,dynamic,unexpected and so completely different from the stable characteristics of voice services,different services have made different for the optical network transmission requirements and demand-assigned bandwidth demand.On the other hand,operation of networks requires the network to be adjusted itself to optimize performance,which also demands intelligence of networks.network node should have the capacity of selfaware the network link status,and adjust the route to optimize the performance of optical networks.Thus,there is a trend for optical networks to be intelligent in a long time.In this paper,aimed at self-sensing optical network hardware platforms and core nodes,the author has made the implementation and research. Combined with the author's practical experience,the self-sensing hardware platform,the hardware structure,the core node fpga design,and the key technologies of fpga applications in optical network are described.And The platform has been tested and demonstrated,of which the key issues and problems are analyzed and optimized approach.The paper's structure is that:1.Paper first provides an overview to self-sensing optical networking and introduces the self-sensing optical networking platform architecture.Test platform consists of three edge nodes and four core nodes.Core nodes have rate of 1.25Gbit/s,3×3 switching capabilities,and the platform can access video,audio,FTP and other services.On the basis of the network,the core nodes in the functional requirements and status are described.2.fpga design in the core nodes is described in detail.In the overall architecture,physical layer processing to receive and send,routing,scheduling,controling the optical switching,etc.The author makes a specific note,improvements and recommendations. Then,summarize the FPGA technologies in optical network applications to the core node as an example.3.Testing the core node and the system, the completion of system performance has achieved the design goals, and core nodes have met the network's functional requirementsAthe author summarizes a technical aspect of the entire paper,and makes the next step prospect.