Optical fiber kev sib txuas lus siv lub teeb ua cov ntaub ntawv sib txuas lus.Nws tuaj yeem kis tau los ntawm cov tub ntxhais fiber ntau.Txawm li cas los xij, tsis yog txhua lub teeb ntawm lub teeb yog tsim rau kev sib txuas lus.Kev sib kis tsis sib txawv nrog cov waveband sib txawv ntawm lub teeb.Rau kev ua tiav qhov poob qis thiab ua tau zoo, cov kws tshawb fawb yeej ib txwm nrhiav lub teeb pom kev zoo tshaj plaws.
- 850nm Waveband muaj
Thaum xyoo 1980s, cov kws tshawb fawb tau pib tshawb nrhiav cov thev naus laus zis ntawm kev sib txuas lus fiber ntau hauv kev ua tau zoo.Multi-mode fiber ntau yog qhov lawv kawm txog.Nrog cov cores loj dua, muti-hom fiber ntau muaj peev xwm paub txog ib qho kev sib kis ntawm fiber ntau rau muti-hom teeb.850nm wavelength teeb yog ib qho uas yuav tsum tau siv ua ntej.
- O Waveband
Thaum pib ntawm xyoo 1990, ib hom fiber ntau pib siv dav.
Daim duab 1
Cov kws tshawb fawb pom tau tias 1260nm ~ 1360nm waveband lub teeb tuaj yeem ua tiav qhov teeb meem tsawg tshaj plaws thiab kev sib kis tsis zoo uas tshwm sim los ntawm kev tawg los ntawm kev sim.Nrog rau kev sim thiab kev ua yuam kev, cov kws tshawb fawb pom tias lub teeb nrog 1260nm ~ 1625nm kuj tseem nyob hauv qhov poob qis tshaj plaws thiab yog lub teeb pom kev zoo tshaj plaws rau kev sib kis ntawm fiber ntau.
1260nm ~ 1625nm waveband teeb tau muab faib ua tsib-O waveband, E waveband, S waveband, C waveband thiab L waveband.
Daim duab 2
Cov kws tshawb fawb kuj pom cov kev sib raug zoo ntawm kev sib kis tsis tau thiab wavelength.Nws yog qhia raws li nram no.
Daim duab 3
Feem ntau siv band yog C waveband ((1530nm ~ 1565nm), uas sawv cev rau "paub".C band tuaj yeem ua tiav qhov kev sib kis tsawg kawg uas tau siv dav rau MAN, kev ncua deb, kev ncua deb, submarine optical cable systems thiab WDM system.
- L Waveband (1565nm ~ 1625nm)
L stands rau "ntev wavelength".L waveband tuaj yeem ua tiav qhov kev sib kis tsawg kawg thib ob thiab tseem yog ib qho kev xaiv tseem ceeb rau kev lag luam.Yog tias C waveband tsis tuaj yeem ua tau raws li qhov xav tau ntawm bandwidth, Tib neeg feem ntau yuav siv L waveband ua ntxiv.
- S Waveband (1460nm ~ 1530nm)
S sawv cev rau "short-wavelength".Thaum nws los txog rau fiber ntau poob, nws siab dua O waveband.Nws feem ntau yog siv rau downward wavelength ntawm PON.
- E Waveband
Nws yog qhov tsawg tshaj plaws waveband ntawm tsib hom waveband.E stands rau "extended".Raws li pom los ntawm daim duab 3, lub pob tuaj yeem pom ntawm E waveband.Qhov ntawd yog vim tias nws tau nqus los ntawm OH- uas ua rau kev sib kis loj heev, uas tseem hu ua dej ncov.
Rov qab rau hauv cov hnub qub, vim tias muaj kev txwv tsis pub siv, dej tau muab sib xyaw rau hauv cov iav fiber ntau uas ua rau kev sib kis loj heev hauv E waveband thiab nws tsis tuaj yeem ua haujlwm li qub.Tom qab ntawd, tib neeg tau tsim cov thev naus laus zis ua kom lub cev qhuav dej hauv iav ua, txij li thaum ntawd, kev sib kis ntawm E waveband tseem qis dua O waveband.Txawm li cas los xij, kev poob qis tau tshwm sim ntawm E waveband ntawm optical fiber cable uas tau teeb tsa ua ntej piav qhia tseem muaj kev txwv rau E waveband siv hauv kev sib txuas lus fiber ntau.
- U Waveband (1625-1675 nm)
Tsuas yog cov waveband uas tau hais, U waveband kuj tau siv dav, feem ntau ntawm kev saib xyuas network.
Yog xav paub ntxiv ntawm peb cov khoom ntawm qhov sib txawv wavelength, thov mus saib peb lub vev xaib:
https://www.erbiumtechnology.com/eye-safer-laser/
https://www.erbiumtechnology.com/1570nm-opo-laser/
https://www.erbiumtechnology.com/1064nm-yag-laser/
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Lub Sijhawm Hloov Kho: Lub Rau Hli-23-2022
