光孤子传输基础及其系统关键技术

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1、光孤子传输基础及其系统关键技术摘要：光纤通信具有高速率、大容量、长距离以及抗干扰性强等特点，但光纤的损耗和色散降低了光纤的传输性能，阻碍了光纤通信的发展。随着EDFA的广泛使用，损耗的问题基本解决，光纤的色散便成了目前光纤通信系统屮限制光信号传输速率和距离的主要因素。利用非线性效应补偿色散(形成孤子)来保持光脉冲稳定的传输逐渐成为通信的研究热点。本论文介绍了光孤子的相关理论。首先，介绍孤子形成的机理即用非线性效应来平衡色散效应以实现光脉冲的稳定传输。光孤子具有传输不变形的特性，是光纤通信系统中最理想的信息载体，因此

2、简要阐述了光孤子的成形机制及其传输理论，并介绍了光孤子传输系统构成与其所涉及到的关键技术，最后探讨了光孤子传输系统的研究现状及发展前景。关键字：光孤子；色散管理；密集色散管理；光脉冲压缩光纤通信光孤子光纤损耗光孤子放大ABSTRACTOpticalfibercommunicationhastheadvantageofhigh-speed,large-capacity,long-distaneeandnoise-proof,butfiberlossanddispersionlimitstheopticalpulset

3、ransmissionperformanee,hashinderedthedcvelopmentofopticalfibercommunications.WiththewidespreaduseofEDFA,thelossbasicallysolved,fiberdispersioneffecthasbecomethemainfactorswhich1imitopticalsignalsmissionrateanddistanceinthefiber-opticcommunicationssystem.Tnthef

4、ieldofcommunications,nonlinearcompensationdispersioneffect(formationofsolutions)tomaintainthestabi1ityoftheopticalpulsetransinissionisbecomingthehotspot・[3]Thispaperintroducesthetheoryofsolitons.Thefirstchapterdescribessolutionformationmechanismthatisusedtheef

5、fectsofnonlineartobalancedispersioneffectsinordertoachievestabilityintheopticalpulsepropagation;Inpart11discussesthedescriptionofthesolitontransmissionequationandsolitonsolutions;Bitrateandthetransmissiondistanceandtheerrorrateisthemaincommunicationsparameters

6、,[4]Ifachievingstabilityultrashortpulsetransmissiononlybythenonlineareffectsisnotrealized.Sothethirdpartdiscussesdispersionmanagementandintensivedispersionmanagementconceptandthefourthpartoftheopticalpulsecompressiontechnology,introducesthedispersionofmanageme

7、ntandsolitoncompressioneffectofcombiningtechnology,inordertoachievepulsecompressionandmaintainedshort-pulsestabilityofthetransmission,toachievehigh-speed,large-capacity,Iong-distancecommunication.InthefifthpartofsimulatevariouseffectofsolitontransmissionwithMa

8、t1absoftware.[Keywords]:opticalsolitons;NonlinearSchrodingerequalion;Dispersionmanagement;Intensivedispersionmanagement;Opticalpulsecompression(一)引言孤子(Soliton)又称孤立波，是一种特殊形式的超短脉冲，或者