Ib hom fiber ntau: lub hauv paus iav tseem nyias nyias (cov tub ntxhais txoj kab uas hla feem ntau yog 9 lossis 10) μ m), tsuas yog ib hom ntawm fiber ntau tuaj yeem kis tau.
Lub intermodal dispersion ntawm ib hom fiber ntau yog me me, uas yog tsim rau kev sib txuas lus tej thaj chaw deb, tab sis kuj muaj cov khoom dispersion thiab waveguide dispersion.Nyob rau hauv txoj kev no, ib hom fiber ntau muaj cov kev xav tau siab rau qhov dav dav thiab ruaj khov ntawm lub teeb ci, uas yog, qhov dav spectral yuav tsum nqaim thiab kev ruaj ntseg yuav tsum zoo.
Tom qab ntawd, nws tau pom tias ntawm 1.31 μ Ntawm M wavelength, cov khoom tawg thiab waveguide dispersion ntawm ib hom fiber ntau yog qhov zoo thiab qhov tsis zoo, thiab qhov loj yog tib yam.Yog li, 1.31 μ M wavelength cheeb tsam tau dhau los ua lub qhov rais ua haujlwm zoo tshaj plaws ntawm kev sib txuas lus fiber ntau, thiab nws tseem yog lub luag haujlwm tseem ceeb ntawm kev siv cov kev sib txuas lus kho qhov muag fiber ntau 1.31μM qhov tseem ceeb ntawm cov pa ib hom fiber ntau yog txiav txim los ntawm ITU-T nyob rau hauv G652 pom zoo, yog li no hom fiber ntau kuj hu ua G652 fiber.
Piv nrog multimode fiber ntau, ib hom fiber ntau tuaj yeem pab txhawb kev sib kis ntev dua.Hauv 100Mbps Ethernet thiab 1G gigabit network, ib hom fiber ntau tuaj yeem txhawb nqa kev sib kis ntawm ntau tshaj 5000m.
Los ntawm qhov kev xav ntawm tus nqi, vim hais tias lub optical transceiver yog kim heev, tus nqi ntawm kev siv ib hom optical fiber ntau yuav siab dua li ntawm ntau hom optical fiber cable.
Lub refractive index faib yog zoo li cov mutant fiber ntau, thiab cov tub ntxhais txoj kab uas hla tsuas yog 8 ~ 10 μ m.Lub teeb propagates raws nruab nrab axis ntawm lub fiber core nyob rau hauv ib tug linear duab.Vim tias hom fiber ntau no tsuas yog kis tau ib hom (degeneracy ntawm ob lub xeev polarization), nws hu ua ib hom fiber ntau, thiab nws cov teeb liab distortion tsawg heev.
Kev piav qhia ntawm "ib hom kho qhov muag fiber ntau" hauv cov ntaub ntawv kawm: feem ntau, thaum V tsawg dua 2.405, tsuas yog ib qho nthwv dej crest dhau los ntawm fiber ntau optical, yog li nws hu ua single-mode optical fiber.Nws cov tub ntxhais yog nyias heev, txog 8-10 microns, thiab hom dispersion tsawg heev.Lub ntsiab tseem ceeb cuam tshuam rau kev sib kis band dav ntawm optical fiber ntau yog dispersion, thiab hom dispersion yog qhov tseem ceeb tshaj plaws, thiab dispersion ntawm ib hom optical fiber yog me me, yog li ntawd, lub teeb yuav kis tau mus rau ib tug ntev kev deb nyob rau hauv ib tug dav zaus. band.
Ib hom optical fiber ntau muaj ib txoj kab uas hla ntawm 10 microns, uas tuaj yeem tso cai rau ib hom kab sib kis thiab txo cov kev txwv ntawm bandwidth thiab modal dispersion.Txawm li cas los xij, vim lub me me txoj kab uas hla ntawm ib hom kho qhov muag fiber ntau, nws yog ib qho nyuaj rau tswj beam kis tau tus mob, yog li nws yuav tsum tau kim heev laser raws li lub teeb qhov chaw, thiab lub ntsiab kev txwv ntawm ib leeg-hom optical fiber nyob rau hauv cov ntaub ntawv dispersion, ib leeg. hom optical cable feem ntau siv laser kom tau txais bandwidth siab.Vim tias LED yuav tso tawm ntau lub teeb pom kev zoo nrog cov bandwidth sib txawv, cov khoom siv dispersion yuav tsum yog qhov tseem ceeb heev.
Piv nrog multimode fiber ntau, ib hom fiber ntau tuaj yeem pab txhawb kev sib kis ntev dua.Hauv 100Mbps Ethernet thiab 1G gigabit network, ib hom fiber ntau tuaj yeem txhawb nqa kev sib kis ntawm ntau tshaj 5000m.
Los ntawm qhov kev xav ntawm tus nqi, txij li thaum lub optical transceiver yog kim heev, tus nqi ntawm kev siv ib hom optical fiber ntau yuav siab dua li ntawm ntau hom optical fiber cable.
Ib hom fiber ntau (SMF)
Piv nrog rau multimode fiber ntau, cov tub ntxhais txoj kab uas hla ntawm ib hom fiber ntau yog thinner, tsuas yog 8 ~ 10 μ m. Vim hais tias tsuas yog ib hom kis tau tus mob, tsis muaj inter mode dispersion, me me tag nrho dispersion thiab dav bandwidth.Tib hom fiber ntau yog siv nyob rau hauv 1.3 ~ 1.6 μ Hauv cheeb tsam wavelength ntawm M, los ntawm kev tsim nyog tsim ntawm refractive index faib ntawm cov fiber ntau optical thiab xaiv cov ntaub ntawv siab purity los npaj cladding 7 zaug loj dua cov tub ntxhais, qhov tsawg kawg nkaus poob thiab qhov tsawg kawg nkaus dispersion tuaj yeem ua tiav tib lub sijhawm hauv pawg no.
Tib hom optical fiber ntau yog siv nyob rau hauv qhov ntev thiab muaj peev xwm kho qhov muag fiber ntau kev sib txuas lus, kho qhov muag fiber ntau hauv cheeb tsam network thiab ntau yam fiber ntau optical sensors
Post lub sij hawm: Mar-08-2022