Dab tsi yog qhov txawv ntawm ib hom fiber ntau thiab multimode fiber ntau?

Nyob rau hauv cov ntaub ntawv uas fiber optic cables yuav tsum tau rau kev soj ntsuam cov kev qhia cabling, tsawg kawg peb yuav tsum to taub dab tsi fiber optic cables yog thiab yuav ua li cas paub qhov txawv ntawm ib hom thiab multimode. Peb yuav tsum sim siv cov lus yooj yooj yim hauv kab lus no rau cov pib tshiab kom nkag siab. Qhov tseeb, txhua phau ntawv tshaj lij muaj kev paub txog fiber ntau optics, tab sis nws zoo li tsis muaj ntau yam uas yuav tsum nco ntsoov tom qab nyeem nws, vim tias nws tseem yog kev tshaj lij thiab chaw taws teeb rau feem ntau tsis yog cov kws tshaj lij.
Siv ib kab lus los piav qhia txog ib hom fiber ntau thiab qhia rau txhua tus neeg: "Thaum lub geometric loj ntawm cov fiber ntau yog qhov tseem ceeb ntawm cov tub ntxhais txoj kab uas hla yuav nyob ze rau lub wavelength ntawm lub teeb, xws li cov tub ntxhais txoj kab uas hla D1 nyob rau hauv qhov ntau ntawm { {1}} µ m, fiber ntau tsuas tso cai rau hom HE11 kom nthuav tawm hauv nws, thiab tag nrho lwm hom kev txiav txim siab dua raug txiav tawm. Hom fiber ntau no hu ua ib hom fiber ntau
Fiber optic yog ib txoj kab kev sib txuas lus uas xa cov teeb liab kho qhov muag. Kao Kun, yav dhau los tus thawj tswj hwm ntawm Suav University of Hong Kong, thiab tus kws tshawb fawb txawv teb chaws uas tsis nco qab nws lub npe thawj zaug tau hais tias Optical fiber tuaj yeem siv los xa cov kev sib txuas lus. Vim li no, Kao Kun yeej Nobel nqi zog hauv Physics hauv physics hauv 2009.
Feem ntau, qee tus naj npawb ntawm cov fibers kho qhov muag tau muab tso ua ke rau hauv cov khoom siv kho qhov muag hauv ib txoj hauv kev rau kev siv hauv engineering. Lub hauv paus ntawm ib qho fiber ntau yog nyias nyias, uas yog ib hom iav fiber ntau txog qhov tuab ntawm cov plaub hau.
Qhov zoo ntawm optical fiber yog tias nws xa cov teeb liab los ntawm lub teeb conduction, uas tsis yog-conductive thiab tsis ntshai ntawm xob laim, yog li tsis tas yuav muaj kev tiv thaiv hauv av.
Peb faib lub teeb rau hauv multimode fiber ntau thiab ib hom fiber ntau raws li nws txoj kev sib kis hauv cov fibers optical. Rau peb cov neeg siv, tsuas yog nco ntsoov lub hauv paus chiv keeb ntawm cov npe ntawm multimode thiab ib hom.
Multimode fiber ntau: Nws tuaj yeem kis tau ntau hom teeb.
Tib hom fiber ntau: tuaj yeem kis tau ib hom ntawm lub teeb.
Cov tub ntxhais nruab nrab ntawm multimode fiber ntau yog thicker, thaum nruab nrab ntawm ib hom fiber ntau yog nyias. Txawm li cas los xij, hauv kev sib piv, multimode fiber ntau yog 50 microns, thiab ib hom fiber ntau yog 10 microns. Yog tias koj hnov ​​​​qab qhov hloov pauv ntawm cov units ntawm microns, 1 mm =1000 microns. Qhov kev ncua deb ntawm multimode fiber ntau kis tau tus mob yog ze, feem ntau tsuas yog ob peb txhiab meters. Qhov kev ncua deb ntawm ib hom fiber ntau yog ntev dua, feem ntau yog ob peb kaum zaus ntawm multimode fiber ntau. Ib hom fiber ntau feem ntau kim dua li multimode fiber ntau. Cov xim ntawm txheej txheej ntawm ib hom optical fibers feem ntau yog daj. Cov xim txheej ntawm multimode fiber ntau yog Txiv kab ntxwv-liab.
Qhov zoo ntawm kev siv fiber ntau optic kuj muaj xws li:
1. Thaum qhov kev ncua deb ntawm cov ntaub ntawv cov ntsiab lus yog ntau tshaj 100m, yog tias tooj liab cable raug xaiv. Repeaters yuav tsum tau ntxiv los yog cov cuab yeej siv network thiab cov chav tsis muaj zog tam sim no yuav tsum tau ntxiv los ua kom cov nqi nce ntxiv thiab qhov ua yuam kev. Kev siv fiber ntau optics tuaj yeem daws qhov teeb meem no yooj yim.
2. Muaj ntau qhov kev cuam tshuam ntawm electromagnetic cuam tshuam hauv qhov chaw ua haujlwm tshwj xeeb (xws li cov chaw tsim khoom, tsev kho mob, chav cua txias, chav fais fab, thiab lwm yam), thiab cov fibers kho qhov muag tuaj yeem ua haujlwm ruaj khov hauv cov cheeb tsam no yam tsis muaj hluav taws xob cuam tshuam.
3. Tsis muaj electromagnetic to nyob rau hauv optical fiber, thiab nws yog ib qho nyuaj heev los xyuas cov teeb liab kis tau nyob rau hauv lub optical fiber. Nws yog ib qho kev xaiv zoo nyob rau hauv cov chaw uas yuav tsum muaj kev ceev ntiag tug siab (xws li kev ua tub rog, kev tshawb fawb thiab kev tsim kho, kev tshuaj xyuas, tsoomfwv, thiab lwm yam lag luam).
4. Nyob rau hauv ib puag ncig nrog kev thov siab rau bandwidth, ncav cuag tshaj 1G, fiber ntau optic yog qhov kev xaiv zoo.
Hauv kev siv tswv yim, yog tias qhov kev ncua deb dhau mus, ib hom optical fibers siv; Yog hais tias qhov kev ncua deb yog nyob ze, multimode fiber optic yuav siv tau, thiab fiber optic kis tau tus mob yuav tsum tau siv fiber optic transceivers, ib hom fiber optic.