光纤因其无可比拟的传输特性在接入网中得到了越来越广泛的应用，光纤接入网是最能适应未来发展的解决方案。光通信的核心技术在于光器件和光电器件技术,具有小型化、热插拔功能和自诊断功能等三大特点的千兆SFP收发器将代替SIP和GBIC成为千兆收发器市场的主流，是通信用光电器件发展的必然趋势。本课题是湖北省科技攻关项目的子项目，目标是研制出满足MSA协议和SFF-8472的适合于1.25Gb/s速率的小型封装的可插拔SFP光收发模块。主要任务是完成小型封装SFP光纤收发器电路设计,原理图及PCB版的绘制及相关参数的测定的工作,难点为热插拔电路的设计,高速率的抗电磁干扰电路的整合,及更小封装电路的设计. 建立在对千兆以太网有关标准分析的研究基础之上，本文提xx兆光纤收发器实现技术方案并进行分析，就有关测试问题进行分析和研究，并提出相关实现方法。我们设计的光纤收发器有良好的电磁兼容性，并保证了电路板的供电特性和散热特性、支持全/半双工自适应、具有数据诊断功能、准确方便的判断网络故障、支持热插拔操作、兼容性良好。本文阐述了接入网在整个现代通信网中的重要地位及光纤收发器成为当前市场的迫切需要，对千兆以太网有关标准分析的研究，介绍了千兆SFP光收发系统组成、原理、关键技术与实现方法设计，介绍了各类元器件尤其是核心芯片与光收发一体模块的选择方法及原则，基于信号完整性分析的高速数字PCB的设计，在电路板设计过程中采用差分信号线布线的优势和布线策略，对数字电路的串扰分析提出了对策. The access network, often referred as "the last mile" of the Internet, plays an important role in the overall network. The increasing demand for more bandwidth requires new transmitting media of better transportation quality. Because of its competitive properties fiber comes to be the top choice and becomes the major form of networking. The key technique of optical network is optical & electronic media converters .With the advent of the new phase of full-optical communication, the terms “G bit/s” “hot-pluggable” and “Diagnostic Monitoring” have already begun to creep into the popular vocabulary. No one can deny the fact that SFP transceiver will take the place of SIP and GBIC become popular in the market today. In this paper, a kind of single mode Small-Form-Pluggable Transceiver which meets the demands of MSA and SFF-8472 is successfully developed. Because of its features of abundant bandwidth, high stability and reliability, and low cost, the product satisfies the market requirement of domestic Internet access, and has shown good marketing performance. The 4-layer printed circuit board, which proposes good Electro Magnetic Compatibility, electrical trait and heat elimination; .Full/half duplex auto-negotiation support; Diagnostic Monitoring for malfunction indication and troubleshooting; .Supporting hot-pluggable; Good compatibility; Good at heat elimination. 1.25Gbit/s SFP optic transceiver has been deployed in various broadband applications will be used in backbone networks of ring or daisy-chain topologies.