Fiber Optic Cable ua haujlwm li cas?

Aug 19, 2024

Tso lus

Fiber optic cables yog ib hom kev sib txuas lus nruab nrab uas siv lub teeb liab xa cov ntaub ntawv. Cov cables no nqa cov ntaub ntawv los ntawm cov khoom siv kho qhov muag sab hauv hauv daim ntawv ntawm lub teeb, ua kom muaj kev sib txuas lus ceev thiab muaj peev xwm ntawm cov ntaub ntawv. Hauv qab no yog ib qho kev piav qhia ntawm yuav ua li cas fiber optic cables ua haujlwm:

1. Cov qauv tsim
Fiber optic cables muaj ntau cov fibers optical, txhua tus nrog cov qauv hauv qab no:

  • Core:Qhov no yog qhov innermost ntawm optical fiber, ua los ntawm cov iav ntshiab los yog yas, qhov twg lub teeb pom kev mus. Cov tub ntxhais feem ntau muaj txoj kab uas hla ntawm ob peb micrometers mus rau ntau kaum micrometers.
  • Cladding:Nyob ib puag ncig ntawm lub hauv paus, lub cladding yog ua los ntawm cov khoom siv nrog qis dua refractive index. Nws lub luag haujlwm tseem ceeb yog txhawm rau kaw lub teeb liab nyob rau hauv lub hauv paus los ntawm tag nrho cov kev xav sab hauv.
  • Txheej:Cov txheej txheej yog txheej tiv thaiv uas npog cov cladding, feem ntau yog ua los ntawm cov khoom siv yas, thiab pab tiv thaiv cov fiber ntau los ntawm kev puas tsuaj rau lub cev thiab ib puag ncig.

2. Lub hauv paus ntsiab lus ntawm lub teeb pom kev sib kis
Fiber optic cables ua tiav cov ntaub ntawv sib txuas lus los ntawm kev xa cov teeb liab teeb liab. Cov txheej txheem ntawm kev xa cov teeb liab teeb liab los ntawm kev siv fiber ntau tuaj yeem ua tiav hauv cov kauj ruam hauv qab no:

  • Teeb liab encoding thiab lub teeb Source:Cov ntaub ntawv yog thawj zaug encoded rau hauv cov teeb liab teeb liab, feem ntau yog siv lub laser lossis LED teeb qhov chaw los hloov hluav taws xob teeb liab mus rau lub teeb liab. Cov teeb liab teeb liab no sawv cev rau cov ntaub ntawv binary ("1" thiab "0") hauv daim ntawv pulses.
  • Lub teeb teeb liab kis tau tus mob:Cov teeb liab encoded yog kis los ntawm cov tub ntxhais ntawm optical fiber. Vim qhov sib txawv ntawm qhov ntsuas qhov ntsuas ntawm qhov nruab nrab ntawm lub hauv paus thiab cladding, lub teeb pom kev zoo tshaj tawm hauv lub hauv paus ntawm tag nrho cov kev xav sab hauv. Cov teeb liab teeb pom kev cuam tshuam tawm ntawm qhov sib cuam tshuam ntawm cov tub ntxhais thiab cladding, tso cai rau lawv taug kev mus ntev hauv cov fiber ntau yam tsis muaj kev khiav tawm.
  • Teeb liab Amplification thiab Regeneration:Thaum lub sij hawm sib kis mus ntev, lub teeb liab yuav txo qis vim qhov poob. Yog li ntawd, optical amplifiers lossis regenerators feem ntau muab tso rau hauv fiber ntau optic cable los txhawb lub teeb liab lub zog, kom ntseeg tau tias cov ntaub ntawv tseem nyob hauv qhov ntev.
  • Signal Decoding thiab txais:Thaum lub teeb pom kev mus txog lawv lub hom phiaj, lub photodetector (xws li photodiode) ntawm qhov kawg tau txais yuav hloov cov teeb liab rov qab rau hauv hluav taws xob teeb liab. Cov teeb liab hluav taws xob no ces muab txiav rau hauv cov ntaub ntawv qub rau cov neeg siv nkag.

3. Ib hom thiab ntau hom Fiber
Fiber optic cables feem ntau muab faib ua ib hom fiber ntau thiab ntau hom fiber ntau, uas txawv hauv cov qauv thiab daim ntawv thov:

  • Ib hom Fiber:Nrog rau cov tub ntxhais nyias nyias (txog 8-10} micrometers), nws tso cai rau tib hom teeb kom nthuav tawm. Nws yog qhov tsim nyog rau kev sib kis mus ntev, cov ntaub ntawv ceev ceev, xws li hauv kev sib txuas lus ntev thiab dav hauv cheeb tsam network (WAN).
  • Fiber ntau hom:Nrog cov tub ntxhais tuab dua (txog 50-62.5 micrometers), nws tso cai rau ntau hom teeb pom kev. Nws yog tsim rau luv luv, qis-ceev cov ntaub ntawv kis tau tus mob, xws li nyob rau hauv lub zos cheeb tsam network (LAN) thiab intra-data center kev sib txuas.

4. Qhov zoo ntawm Fiber Optic Cables
Fiber optic cables muaj ntau yam zoo dua li kev siv tooj liab cable:

  • High Bandwidth:Optical fibers tuaj yeem pab txhawb kev sib kis tau zoo heev, ua rau lawv haum rau cov ntaub ntawv xa mus ntau.
  • Tsawg Loss:Lub teeb liab attenuation hauv optical fibers yog tsawg, ua rau lawv zoo tagnrho rau kev sib kis mus ntev.

Electromagnetic Interference Resistance: Txij li cov fibers optical xa cov teeb liab tsis siv hluav taws xob, lawv tiv thaiv kev cuam tshuam ntawm electromagnetic, muab kev sib kis ruaj khov dua.

  • Kev ruaj ntseg:Optical fibers tsis yooj yim rau kais, ua rau lawv haum rau kev ruaj ntseg kis ntawm cov ntaub ntawv rhiab heev.

5. Cov ntawv thov
Fiber optic cables tau dav siv hauv kev sib txuas lus hauv xov tooj, internet nraub qaum, cov ntaub ntawv chaw, kev lag luam tes hauj lwm, thiab tshaj tawm hauv TV. Lawv txhawb ntau yam kev xav tau ntawm kev sib txuas lus, xws li transoceanic cables mus rau hauv zos tes hauj lwm.

Los ntawm cov hauv paus ntsiab lus no, fiber ntau optic cables pab kom muaj kev kub ceev thiab muaj peev xwm xa cov ntaub ntawv, txhawb kev ua haujlwm ntawm kev sib txuas lus niaj hnub.

Xa kev nug
Tiv Tauj PebYog muaj lus nug

Koj tuaj yeem tiv tauj peb hauv xov tooj, email lossis online daim ntawv hauv qab no. Peb tus kws tshaj lij yuav hu koj rov qab sai.

Hu rau tam sim no!