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1、光孤子傳輸基礎及其系統(tǒng)關鍵技術摘要：光纖通信具有高速率、大容量、長距離以及抗干擾性強等特點，但光纖的損耗和色散降低了光纖的傳輸性能，阻礙了光纖通信的發(fā)展。隨著EDFA的廣泛使用，損耗的問題基本解決，光纖的色散便成了目前光纖通信系統(tǒng)屮限制光信號傳輸速率和距離的主要因素。利用非線性效應補償色散(形成孤子)來保持光脈沖穩(wěn)定的傳輸逐漸成為通信的研究熱點。本論文介紹了光孤子的相關理論。首先，介紹孤子形成的機理即用非線性效應來平衡色散效應以實現(xiàn)光脈沖的穩(wěn)定傳輸。光孤子具有傳輸不變形的特性，是光纖通信系統(tǒng)中最理想的信息載體，因此
2、簡要闡述了光孤子的成形機制及其傳輸理論，并介紹了光孤子傳輸系統(tǒng)構成與其所涉及到的關鍵技術，最后探討了光孤子傳輸系統(tǒng)的研究現(xiàn)狀及發(fā)展前景。關鍵字：光孤子；色散管理；密集色散管理；光脈沖壓縮光纖通信光孤子光纖損耗光孤子放大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)又稱孤立波，是一種特殊形式的超短脈沖，或者
