Thaum qhov kev sib kis ntev dhau (ntau tshaj 100 km), lub teeb liab optical yuav muaj kev poob loj heev. Yav dhau los, tib neeg feem ntau siv cov khoom siv optical repeaters los ua kom lub teeb liab optical loj dua. Hom khoom siv no muaj qee qhov kev txwv hauv kev siv. Hloov los ntawm optical fiber amplifier. Lub hauv paus ntsiab lus ua haujlwm ntawm optical fiber amplifier tau qhia hauv daim duab hauv qab no. Nws tuaj yeem ua kom lub teeb liab optical ncaj qha yam tsis tau dhau los ntawm cov txheej txheem ntawm kev hloov pauv optical-hluav taws xob-optical.
Lub fiber amplifier ua haujlwm li cas?
Thaum qhov kev sib kis ntev dhau (ntau tshaj 100 km), lub teeb liab optical yuav muaj kev poob loj heev. Yav dhau los, tib neeg feem ntau siv cov khoom siv optical repeaters los ua kom lub teeb liab optical loj dua. Hom khoom siv no muaj qee qhov kev txwv hauv kev siv. Hloov los ntawm optical fiber amplifier. Lub hauv paus ntsiab lus ua haujlwm ntawm optical fiber amplifier tau qhia hauv daim duab hauv qab no. Nws tuaj yeem ua kom lub teeb liab optical ncaj qha yam tsis tau dhau los ntawm cov txheej txheem ntawm kev hloov pauv optical-hluav taws xob-optical.
Muaj hom fiber amplifiers dab tsi?
1. Erbium-doped fiber amplifier (EDFA)
Erbium-doped fiber amplifier (EDFA) feem ntau yog tsim los ntawm erbium-doped fiber, twj tso kua mis teeb pom kev zoo, optical coupler, optical isolator, thiab optical filter. Ntawm lawv, erbium-doped fiber yog ib feem tseem ceeb ntawm kev ua kom pom kev zoo, uas feem ntau yog siv los ua kom tiav 1550 nm Band optical signal amplification, yog li ntawd, erbium-doped fiber amplifier (EDFA) ua haujlwm zoo tshaj plaws hauv qhov ntau ntawm wavelength ntawm 1530 nm txog 1565 nm.
Aqhov zoo:
Kev siv zog twj tso kua mis siab tshaj plaws (ntau dua 50%)
Nws tuaj yeem ncaj qha thiab tib lub sijhawm ua kom lub teeb liab kho qhov muag hauv 1550 nm band loj dua.
Tau txais ntau dua 50 dB
Suab qis hauv kev sib kis mus ntev
qhov tsis zoo
Erbium-doped fiber amplifier (EDFA) loj dua
Cov khoom siv no tsis tuaj yeem ua haujlwm sib koom tes nrog lwm cov khoom siv semiconductor
2. Raman amplifier
Lub Raman amplifier yog tib lub cuab yeej uas tuaj yeem ua kom cov teeb liab pom kev zoo hauv 1292 nm ~ 1660 nm band. Nws txoj cai ua haujlwm yog raws li qhov cuam tshuam Raman scattering hauv cov fiber quartz. Raws li pom hauv daim duab hauv qab no, thaum lub teeb twj tso kua mis raug rub Thaum lub teeb liab tsis muaj zog hauv Mann nce bandwidth thiab lub teeb pom kev zoo twj tso kua mis tau xa mus rau hauv cov fiber optical, lub teeb liab tsis muaj zog yuav raug nthuav dav vim yog Raman scattering effect.
Aqhov zoo:
Ntau hom bands siv tau
Siv tau rau hauv cov ntawv thov fiber ntau ib hom uas tau teeb tsa
Yuav ntxiv cov qhov tsis txaus ntawm erbium-doped fiber amplifier (EDFA)
Kev siv hluav taws xob tsawg, kev sib txuas lus tsawg
qhov tsis zoo:
Lub zog twj tso kua mis siab
Kev tswj hwm qhov nce siab nyuaj
Suab nrov nrov
3. Lub tshuab hluav taws xob semiconductor optical fiber amplifier (SOA)
Cov khoom siv hluav taws xob semiconductor optical fiber amplifiers (SOA) siv cov ntaub ntawv semiconductor ua cov khoom siv nce, thiab lawv cov teeb liab teeb liab thiab cov zis muaj cov txheej tiv thaiv kev cuam tshuam los tiv thaiv kev cuam tshuam ntawm lub ntsej muag kawg ntawm lub amplifier thiab tshem tawm cov nyhuv ntawm lub resonator.
Aqhov zoo:
me me
Lub zog tso zis tsawg
Qhov nce bandwidth me me, tab sis nws siv tau rau ntau hom bands sib txawv
Nws pheej yig dua li erbium-doped fiber amplifier (EDFA) thiab siv tau nrog cov khoom siv semiconductor
Plaub qhov kev ua haujlwm tsis yog-linear ntawm kev hloov pauv hla-nce, kev hloov pauv hla-theem, kev hloov pauv wavelength thiab kev sib xyaw plaub-yoj tuaj yeem paub tseeb
qhov tsis zoo:
Kev ua tau zoo tsis siab npaum li erbium-doped fiber amplifier (EDFA)
Suab nrov thiab qis dua
Lub sijhawm tshaj tawm: Cuaj hlis-17-2021