Thaum qhov kev sib kis tau ntev dhau lawm (ntau tshaj 100 km), lub teeb liab kho qhov muag yuav poob zoo heev.Yav dhau los, tib neeg feem ntau siv optical repeaters los ua kom pom cov teeb liab optical.Cov cuab yeej zoo no muaj qee yam kev txwv hauv kev siv tswv yim.Hloov los ntawm optical fiber amplifier.Lub hauv paus ntsiab lus ua haujlwm ntawm optical fiber amplifier yog qhia hauv daim duab hauv qab no.Nws tuaj yeem txuas ncaj qha rau lub teeb liab kho qhov muag yam tsis tas yuav dhau los ntawm cov txheej txheem ntawm kev hloov kho qhov muag-hluav taws xob-kho qhov muag.
Lub fiber amplifier ua haujlwm li cas?
Thaum qhov kev sib kis tau ntev dhau lawm (ntau tshaj 100 km), lub teeb liab kho qhov muag yuav poob zoo heev.Yav dhau los, tib neeg feem ntau siv optical repeaters los ua kom pom cov teeb liab optical.Cov cuab yeej zoo no muaj qee yam kev txwv hauv kev siv tswv yim.Hloov los ntawm optical fiber amplifier.Lub hauv paus ntsiab lus ua haujlwm ntawm optical fiber amplifier yog qhia hauv daim duab hauv qab no.Nws tuaj yeem txuas ncaj qha rau lub teeb liab kho qhov muag yam tsis tas yuav dhau los ntawm cov txheej txheem ntawm kev hloov kho qhov muag-hluav taws xob-kho qhov muag.
Dab tsi ntawm fiber ntau amplifiers muaj?
1. Erbium-doped fiber ntau amplifier (EDFA)
Erbium-doped fiber ntau amplifier (EDFA) yog tsim los ntawm erbium-doped fiber ntau, twj tso kua mis lub teeb, optical coupler, optical cais, thiab optical filter.Ntawm lawv, erbium-doped fiber ntau yog ib qho tseem ceeb ntawm optical teeb liab amplification, uas yog tsuas yog siv los mus cuag 1550 nm Band optical teeb liab amplification, yog li ntawd, lub erbium-doped fiber amplifier (EDFA) ua hauj lwm zoo tshaj plaws nyob rau hauv lub wavelength ntawm 1530 nm mus rau 1565nm ua.
Advantage:
Kev siv lub twj tso kua mis siab tshaj plaws (ntau dua 50%)
Nws tuaj yeem ncaj qha thiab ib txhij ua kom lub teeb liab kho qhov muag hauv 1550 nm band
Tau tshaj 50 dB
Tsis tshua muaj suab nrov hauv kev sib kis mus ntev
ua tsis tau
Erbium-doped fiber amplifier (EDFA) loj dua
Cov khoom siv no tsis tuaj yeem ua haujlwm nrog lwm cov khoom siv semiconductor
2. Raman amplifier
Raman amplifier yog tib lub cuab yeej uas tuaj yeem nthuav tawm cov teeb liab kho qhov muag hauv 1292 nm ~ 1660 nm band.Nws txoj haujlwm ua haujlwm yog ua raws li kev txhawb nqa Raman tawg paj hauv quartz fiber ntau.Raws li pom hauv daim duab hauv qab no, thaum lub teeb lub twj tso kua mis rub tawm Thaum lub teeb pom kev tsis muaj zog nyob rau hauv Mann nce bandwidth thiab lub zog twj tso kua mis lub teeb nthwv dej yog ib txhij xa mus rau hauv cov fiber ntau optical, lub teeb liab tsis muaj zog yuav ua kom nrov nrov vim Raman tawg ua haujlwm. .
Advantage:
Muaj ntau yam siv bands
Nws tuaj yeem siv rau hauv ib hom kev siv fiber ntau cable
tuaj yeem ntxiv qhov tsis txaus ntawm erbium-doped fiber ntau amplifier (EDFA)
Tsawg zog noj, tsawg crosstalk
tsis txaus:
Lub twj tso kua mis siab
Complex nce tswj system
Tsis nrov
3. Semiconductor optical fiber ntau amplifier (SOA)
Semiconductor optical fiber amplifiers (SOA) siv cov khoom siv semiconductor li kev tshaj tawm, thiab lawv cov teeb liab tawm tswv yim thiab cov zis muaj cov txheej tiv thaiv kev cuam tshuam los tiv thaiv kev cuam tshuam ntawm lub ntsej muag kawg ntawm lub suab nrov thiab tshem tawm cov nyhuv ntawm resonator.
Advantage:
ntim me me
Tsawg tso zis zog
Qhov nce bandwidth yog me me, tab sis nws tuaj yeem siv rau ntau qhov sib txawv
Nws yog pheej yig dua li erbium-doped fiber ntau amplifier (EDFA) thiab tuaj yeem siv nrog cov khoom siv semiconductor
Plaub qhov kev ua haujlwm tsis-linear ntawm kev sib tw tau txais kev hloov pauv, kev hloov pauv hloov pauv hloov pauv, hloov pauv wavelength thiab plaub-yoj sib xyaw tuaj yeem ua tiav
tsis txaus:
Kev ua tau zoo tsis yog siab npaum li erbium-doped fiber ntau amplifier (EDFA)
Lub suab nrov thiab qis nce
Post lub sij hawm: Sep-17-2021