Research On Multi-specification Optical Network Signal Integration Access Platform Technology

With the development of live video,VR,big data,cloud computing and other services,the demand for network bandwidth is growing rapidly.The rate of the transmission network is increasing,resulting in a variety of optical network signals,such as 10 GE,10G SDH,10 G OTN,etc.in the existing network.The realization of multi-standard optical network signal integration access is of great significance for multi-protocol conversion and information extraction.To this end,this paper aims to access a variety of optical network signals,and research and implement an ultra-high density optical network signal access platform.This article has mainly completed the following work:(1)The basic theory of optical network signal transmission is studied,and the theoretical derivation of DP-QPSK coherent demodulation is carried out.(2)With the goal of achieving integrated access of multi-standard optical network signals,the overall design scheme of platform hardware is proposed.The modular design divides the platform into a coherent receiving subsystem,a 10×10G receiving subsystem,a 100 GE receiving subsystem,and a system power supply and clock.(3)The OTL4.10 parallel distribution interface in G.709 is studied in detail,and the design of data offset correction is proposed.In addition,the PCS sublayer multi-channel distribution mechanism of 100 GE Ethernet is studied.Multi-channel alignment was designed.A special table lookup decoding algorithm that consumes less logic resources is proposed for the BCH code of the special structure appearing in the SFEC decoding process.(4)Each subsystem of the designed multi-standard optical network signal integrated access platform is tested separately.The platform designed in this paper has the ability to access 10 Gbps,100GE and 100 Gbps OTN optical network signals,and the bit error rate meets the requirements.