文档介绍：摘要(4)为了进一步提高OCDM系统的传输性能,在采用传统前向纠错码(FEC) 的基础上,提出了在OCDM系统中采用可调级联纠错的方法,研究了基于可调级联纠错码的OCDM系统性能,并比较研究了在OCDM系统中应用多种纠错码方案的系统性能,数值结果表明了采用级联纠错方法改善OCDM 系统性能的有效性。另外,针对相干OCDM系统,提出了基于随机相位信息提高相干OCDM系统性能的新方法,进行了系统仿真,验证了该方法的可行性。(5)采用多重OOC排列组合标识光标签,能有效提高OPS网络支持的光标签数目,提出了基于多重(可调)OOC序列的光标签处理方法,进行了理论仿真。研究了基于多重OOC序列光标签的OPS()系统性能, 进行了数值计算与讨论,从理论上验证了该方案的可行性和可扩展性。(6),设计了基于FPGA产生用于光标签的单脉冲方案与光开关控制模块,并完成了硬件制作和相应的单元实验验证;设计并实现了用于随机、;,设计并实现了基于MGOOC的布拉格光纤光栅(FBG)光编/解码器;在关键部件的设计与实验的基础上,, 进行了实验测试与结果分析,。关键词:光码分复用(OCDM),多组光正交码(MGOOC),多重光正交码序列(MOOCS),光分组交换(OPS),保密信息传输. n ABSTRACT ABSTRACT OPTICAL code divisionmultiplexing(OCDM)technique,bined withthe munications and wireless code division multiplexing(CDM)is being considered tohave wide applications tosome fidds,such as optical packets switching(OPS)system,passive works(FOG,secret information transmission,and ,the research ofOCDM technique and itsapplications e thehotspot munication ,there are stillsome technical difficultiesinprocess ofheading topraeticality ofOCDM this dissertation,some main techniques used inOCDM system and itsapplications are studied,ineluding optical address codes谢tll good correlations,high security or great capacity,high-powered optical en/deeoders,some approaches to improve the performance ofOCDM system,applications ofOCDM to OPS and secretinformation transmission. The main works and innovations ofthisdissertation areasfollowing: (1)In order to improve the security of traditional OCDM-based information transmission,a new construction method formultiplegroups optical orthogonal codes(ooc)(MGOOC)is MGOOC used inOCDM system is randomly changed to interfere ,the security of MGOOC-based works can be definition and eharacteristics of theMGOOC aregiven addition,a new OCDM scheme based on MGOOC and traditional work