Tóm tắt luận văn thạc sĩ kỹ thuật nghiên cứu hệ thống thông tin cáp sợi quang WDM và ứng dụng trong đường trục viễn thông bắc nam

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W$o[ kFSo.""]$WM"XW $,3HW](,YZ kFUo^&'H.H( 4\YZ0'&)TK kFco^&'H.H( 4\YZW,&)T k$-H&'H.H( 4\04"X&&J"0-/9(-Bn-1W]"O@-@<- ",HVH( 4%&)"WX(B9_WJ-2$AF"X/W,W.$-H&' H.H&W$oT kF[b'0Q@NYZTS kFiC BD9(,@NTc kFT^D,<-WJ-2$?,.W7"Sc kFTT$-(:"#$%_q}ZSi kFTSo6_VHFW$,S kFTUb'0Q%_0t !%&)"WXU kFTco3(L"qCW]" /9<"HD"-$?,=O-$US kFT[6_qCU”UW]%_b}US kFTo6_•"9+9‹0-@9O-Ug -!%t+ "X=1IF+0€(,%IO*+W&5N"A"X+9 ( 40<M0t=--@0_$ 0M-A"XW $,3H*+=O< "19HD 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ObEH.(-/"#$"O@YZ"h*)-"O@=!"0<-2$ *+" /9<"2$W|<,B9_9<O-!@9)-o9<O- ,+2$ O@YZ+"O@VH=B?,%&)"WX0’aP -@Q+- B%I(_(,=*E"M$,3H"#$WJ-2$0' 9,?O@VH=BYZD"$,&J( 4\"#$@N 9+=O"•H1-IN"0_"#$•=B(B9†-%&)"WX O@YZ"G+-1-H.H-B-!(,=`aO-2$A 0.Hf0&J""•( 4\"#$@N F*a —-B"f@NO-".HWJ-2$YZ*+f (,0&5("*-ŒO67"$9˜+9_ B"•2$(•…9I &J( 4\"#$9<A0.Hf0&J""•H.(-/"#$"."t"*(, &'$- C3H.•9,9NF9-/@NO-2$W]=`a YZ*+0&J"WE0Q"#$• &)\A?90’E"-@a*IN K -@Ho—Nghiên cứu hệ thống thông tin cáp sợi quang WDM v ứng dng trong đường trc viễn thông Bắc Nam˜a*IQ9U"&'0&J"= 2.&W$o  !"#$% &'( &'+ (F%+ = 2.*42.(FH.(-/"#$@NO -2$A0j"0-/9AP*304":Q<-*+R!H.(-/"#$@N 2$•0XB%aP&0-/9=-@NYZ($05- (F%+  B"'%1AHD,<-A0j"0-/9*+"."=`a"•2$ D9"#$@NYZ )"!#*+,-&'( -B"f=`aVH=B2$?,%&)"WXYZA"."H•] (,@NVH=B2$?,%&)"WX ./01!&'( &$($H&'H.HHDG"*+P B"•(,@NYZk@ NYZ0&J"f(,"."@N0-/9>0-/9&J)A9< HD%N*+21%.A9<YZ0$( aH0'"j*+0$"j 23&'(,-4567,8!9:!;4<  !"#$%$"&'(&)"*+,%+-,."/0/-1-2 ! *304", !0&5("67"8$9&$($"."*:;-(,9<6$"=> 6,?-@$9A"."-B=!*+%1,*@"."*:(-CD E"3F !*+ G,.-@21=-!*+H&'.I&J9< [...]... hiu quang trờn cựng mt si nu cỏc ngun phỏt co ph cỏch nhau mt cỏch hp lý v u thu co th thu c cỏc tớn hiu quang riờng bit nu phn thu co cỏc b tỏch bc song õy chớnh l c s ca k thut ghep kờnh theo bc song WDM Cu trỳc tng quỏt ca h thng thụng tin quang Tuyn thụng tin quang bao gm: B phỏt quang, si quang, khuch i quang v b thu quang Mụ hỡnh chung ca tuyn thụng tin quang nh sau: Thit Mó Phỏt b hoỏ phỏt quang. .. ci tin cụng ngh WDM bng cỏc cụng ngh ghep kờnh theo bc song mt cao DWDM (Dense Wavelength Division Multiplexing) v ghep kờnh theo bc song long CWDM (Coarse Wavelength Division Multiplexing) Nh vy, h thng thụng tin quang ó phỏt trin khụng ngng t vic tỏch ghep c nh tuyn quang n chuyn mch tuyn quang v ang tin ti cỏc h thng thụng tin quang s dng k thut chuyn mch goi quang nc ta, thụng tin cỏp si quang. ..11 CHNG 1: TNG QUAN H THNG THễNG TIN CP SI QUANG WDM Trong k thut thụng tin quang mi si quang ch co th truyn tớn hiu quang t mt ngun phỏt ti mt ngun phỏt ti mt b tỏch quang u thu, Cỏc tớn hiu t cỏc ngun quang khỏc nhau ũi hoi cỏc si xỏc nh v riờng bit Trong thc t thỡ ngun quang co rng ph tng i hp, do vy phng phỏp ny ch s dng mt phn bng tn vn rt ln ca si quang V mt lý thuyt co th lm tng ỏng k... Cỏc tuyn cỏp quang c hỡnh thnh c bit l h thng cỏp quang H Ni-Thnh Ph H Chớ Minh chim mt v trớ quan trng trong h thng thụng tin ton quc 16 Nguyờn ly ghep kờnh quang theo bc song WDM Trong h thng WDM, tớn hiu in ca tng kờnh quang c iu ch vi cỏc song mang quang khỏc nhau Sau o, chỳng c ghep li v truyn trờn cựng mt si quang n u thu Phớa thu thc hin quỏ trỡnh tỏch tớn hiu quang thnh cỏc kờnh quang riờng... thnh phn c bn o l ngun quang to ra song mang quang Ngun quang trong h thng WDM khụng co gỡ khỏc vi ngun quang ca h thng thụng tin quang khỏc, tuy nhiờn ngun quang c s dng trờn tuyn truyn dn tc cao v rt cao, c th trong h thng thụng tin quang ghep kờnh theo bc song thng l Diode Laser (LD) Cỏc yờu cu c bn ca ngun quang n mode: vỡ cỏc lý do khụng tt m ngun quang a mode em li, rt nhiu laser n mode c ch... PHN T TRONG H THNG WDM H thng thụng tin cỏp si quang ó c a vo s dng cỏch õy hn 30 nm Ngy nay h thng WDM ó th hin c nhiu u im phự hp vi cỏc 32 yờu cu truyn dn nh dung lng cao, meo nho, mc tp õm hu nh khụng ỏng k vỡ tớn hiu c truyn trong mt mụi trng n nh H thng thụng tin cỏp si quang WDM c hỡnh thnh bi nhiu phn t Vỡ vy chng 2 tp trung nghiờn cu k thut ghep kờnh quang theo bc song WDM, cỏc phn t trong. .. 1 l1 B n B phỏt quang n ln BA Si quang LA ghep song ls ls quang Thu/phỏt tớn hiu iu khin giỏm sỏt kờnh B phỏt tớn hiu quang iu khin giỏm sỏt H thng kờnh quang qun lớ mng Mỏy thu quang l1 Si quang PA B tỏch song quang ls ln B thu 1 B thu n B thu n B thu tớn hiu iu khin giỏm sỏt kờnh quang Hỡnh 1.6 S h thng WDM 1.4 Mt s tham s k thut trong h thng WDM H thng WDM co mt s tham s chớnh, o l khong... cỏc tuyn thụng tin quang im ni im thụng thng, mi mt si quang s co mt ngun phỏt quang phớa phỏt v mt b tỏch song quang phớa thu Cỏc ngun phỏt quang khỏc nhau s cho ra cỏc lung ỏnh sỏng mang tớn hiu khỏc nhau v phỏt vo si dn quang khỏc nhau, b tỏch song quang tng ng s nhn tớn hiu t si ny Nh vy mun tng dung lng ca h thng thỡ phi s dng thờm si quang Vi h thng quang nh vy, di ph ca tớn hiu quang truyn qua... truyn dn quang co th truyn dn vi suy hao nho Vỡ vy, ó dn n mt ý tng hp lý khi cho rng co th truyn dn ng thi nhiu tớn hiu quang t cỏc ngun quang co bc song phỏt khỏc nhau trờn cựng mt si quang K thut ghep kờnh quang theo bc song WDM s thc hin ý tng ny 1.1 Nhng tn ti v xu hng phỏt trin ca h thng thụng tin quang 1.1.1 Nhng tn ti ca h thng quang Ngoi nhng nhc im ca h thng quang c nờu trờn thỡ trong h thng... dng trong WDM 1.2 Cỏc phng phỏp truyn dn s dng ghep kờnh quang theo bc song H thng truyn dn l nhng h thng tng tỏc, ti mi u s thc hin chc nng phỏt tớn hiu i v nhn tớn hiu v Co hai phng phỏp thit lp h 20 thng truyn dn s dng ghep kờnh quang theo bc song WDM, o l truyn dn WDM n hng v truyn dn WDM song hng 1.2.1 Phng phỏp truyn dn WDM n hng Phng phỏp truyn dn WDM n hng l: tt c kờnh quang trờn cựng mt si quang