Kev Paub Yooj Yim ntawm Optical Fiber

Qhov tsim muaj ntawm cov tshuaj fiber ntau tau tsav lub kiv puag ncig hauv kev sib txuas lus. Yog tias tsis muaj cov fiber ntau los muab kev siv tau zoo-ceev-ceev, hauv internet tuaj yeem tsuas nyob hauv txoj haujlwm theoretical. Yog tias lub xyoo pua 20 yog lub sijhawm hluav taws xob, tom qab ntawd lub xyoo pua 21st yog lub sijhawm ntawm lub teeb. Lub teeb pom kev sib txuas lus li cas? Cia peb kawm cov kev paub yooj yim ntawm kev sib txuas lus kho tshiab ua ke nrog cov editor hauv qab no.

Tshooj 1. Kev paub yooj yim ntawm lub teeb tshaj tawm

Nkag siab lub teeb
Lub teeb vuag yog qhov ua tau hluav taws xob hluav taws xob, thiab hauv qhov chaw dawb, lub nthwv dej thiab zaus ntawm hluav taws xob vuag tsis muaj feem. Cov khoom ntawm ob yog sib npaug rau qhov ceev ntawm lub teeb, uas yog:

Teem lub wavelengths los yog ntau zaus ntawm electromagnetic vuag nyob rau hauv thiaj li yuav tsim hluav taws xob ultromagnetic spectrum. Raws li cov wavelengths txawv lossis ntau zaus, hluav taws xob hluav taws xob tuaj yeem muab faib ua hluav taws xob thaj chaw, cov cheeb tsam ultraviolet, xov tooj cua yoj, thiab chaw ntev. Cov bands siv rau kev sib txuas lus yog tsuas yog thaj chaw infrared, microwave cheeb tsam, thiab xov tooj cua yoj cheeb tsam. Cov duab hauv qab no yuav pab koj nkag siab txog kev faib cov kev sib txuas lus thiab sib piv cov lus tshaj tawm hauv cov ntsiab lus.

Tus protagonist ntawm tsab xov xwm no, "fiber ntau kev sib txuas lus," siv lub teeb pom kev hauv kev sib tw hauv infrared. Thaum nws los txog rau lub sijhawm no, tib neeg yuav xav vim li cas nws yuav tsum yog nyob rau hauv band infrared? Qhov teeb meem no cuam tshuam nrog lub qhov muag tsis sib xws poob ntawm cov ntaub ntawv fiber ntau, namely silica iav. Tom ntej no, peb yuav tsum nkag siab txog qhov kho qhov muag tau hloov lub teeb.

Kev ua kom ceev faj, kev xav txog, thiab tag nrho cov kev xav ntawm lub teeb

Thaum lub teeb tau tawm los ntawm ib qho tshuaj mus rau lwm qhov, ua kom rov zoo li muaj nyob ntawm ob qho khoom, thiab lub kaum sab xis nce nrog lub kaum sab xis ntawm qhov teeb meem teeb. Raws li qhia hauv daim duab → →. Thaum qhov xwm txheej uas lub kaum sab xis mus txog lossis ntau dua ib lub kaum sab xis, qhov teeb meem teeb meem tau pom rov qab, raws li muaj nyob hauv ② ③ ③ hauv daim duab hauv qab no.

Cov ntaub ntawv sib txawv muaj cov khoom siv uas txawv txawv, yog li kev ceev ntawm lub teeb sib txawv txawv txawv hauv cov xov xwm sib txawv. Cov indexing index yog sawv cev los ntawm n, n = c / c / c, qhov twg C yog qhov nrawm hauv lub tshuab nqus tsev thiab V yog qhov nrawm hauv nruab nrab. Ib qho nruab nrab nrog lub siab dua tshiab yog hu ua qhov kho tau qhov nruab nrab. Ob qho xwm txheej rau tag nrho cov kev xav tau tshwm sim yog:
1. Xa tawm los ntawm optically ntom nruab nrab rau optically sib luag
2. Qhov xwm txheej kaum yog ntau dua los yog sib npaug rau lub kaum ntse ntse ntawm kev xav tag nrho
Txhawm rau kom tsis txhob muaj qhov pib kho qhov muag tsis zoo thiab txo cov kis tau kho qhov muag tau tshwm sim hauv cov kab mob kho qhov muag tau tshwm sim.

Ntu 2. Taw qhia rau Optical Hais Tawm Tawm Tshiab (Fiber Optic)

Txheej Txheem Fiber Ntau Optic

Nrog rau kev paub yooj yim ntawm kev nthuav dav teeb pom kev zoo, nws yog qhov yooj yim kom nkag siab cov qauv tsim ntawm kho qhov muag. Cov xim muaj fiber ntau ntawm cov roj muaj zog tau muab faib ua peb txheej txheej txheem: uas yog muaj nyob ntawm qhov chaw siab tshaj plaws silicon dioxide, tseem hu ua iav. Lub tub ntxhais txoj kab uas tsis yog feem ntau yog 9-10 microns (ib-hom), 50 lossis 62,5 microns (ntau-hom). Cov tub ntxhais fiber ntau muaj qhov ntsuas siab tshiab thiab yog siv los xa lub teeb. Thib Ob Txheej Cladding: Nyob ze rau ntawm cov tub ntxhais fiber ntau, kuj muaj ntawm cov iav silica (nrog txoj kab uas hla feem ntau 125 microns). Lub chaw ntsuas hluav taws xob kom tsis muaj qhov tsawg, tsim kom muaj kev tiv thaiv tag nrho ua ke nrog cov tub ntxhais muaj fiber ntau. Qhov thib peb txheej txheej txheej txheem: txheej txheej sab nraud yog cov txheej txheem resin requin. Cov txheej txheem tiv thaiv muaj lub zog siab thiab tuaj yeem tiv thaiv cov cuam tshuam loj, tiv thaiv cov tshuaj muaj zog ntawm cov dej vapor yaig thiab kev puas yog cov tshuab tshuab puas.

Optical Mus Tshaj Tawm

Fiber ntau Optic kis tau ploj yog qhov tseem ceeb heev cuam tshuam rau qhov zoo ntawm kev sib txuas lus fiber ntau optic. Lub ntsiab tseem ceeb ua rau muaj kev ua kom pom cov cim kho qhov muag, tawg thaum lub sij hawm sib kis, thiab lwm yam kev poob tshwm sim los ntawm xws li fiber ntau load, compression, thiab docking poob.

Lub wavelength ntawm lub teeb sib txawv, thiab tus kis tau nyob hauv kho qhov muag cov fibers kuj txawv. Txhawm rau kom txo qis qhov ploj thiab xyuas kom cov nyhuv xa tuaj, cov kws tshawb fawb tau mob siab nrhiav lub teeb uas haum tshaj plaws. Lub teeb nyob rau hauv lub wavessength muaj ntau ntawm 1260nm ~ 1360nm muaj qhov cim npe me tshaj plaws los ntawm dispersion thiab poob qis dua poob. Nyob rau hauv thaum ntxov hnub, lub wavelength no tau saws raws li kev sib txuas lus kho qhov muag. Tom qab, tom qab lub sijhawm ntev ntawm kev tshawb nrhiav thiab kev xyaum ua ntej, cov kws tshaj lij ua ntej lub siab tsis muaj zog (1260NM), uas yog qhov tsim nyog rau kev sib kis hauv qhov muag. Yog li lub teeb vuag siv hauv kev sib txuas lus fiber ntau yog feem ntau nyob hauv infrared band.

Fiber ntau Optic

MultiTagode cov khoom siv kho qhov muag tau hloov: kis ntau hom, tab sis cov loj nyob rau hauv cov teeb meem digital, thiab cov kev txwv no ua rau muaj kev cuam tshuam loj dua. Yog li ntawd, qhov kev ncua deb ntawm multimode optic sib kis yog qhov luv luv, feem ntau tsuas yog ob peb kmetters xwb.
Ib hom cheeb tsam fiber: nrog lub cheeb tsam muaj fiber heev, theoretically xwb ib hom tuaj yeem kis tau, ua rau nws haum rau cov chaw sib txuas lus.

Tshooj 3. Ua ua haujlwm ntawm cov muaj fiber ntau kev sib txuas lus sib txuas lus

Qhov Kev Sib Txuas Lus Fiber Fiber Ntau

Cov khoom sib txuas lus feem ntau siv, xws li cov xov tooj txawb feem ntau, cov khoos phis tawj thiab cov khoos phis tawj, xa cov ntaub ntawv hauv cov qauv hluav taws xob. Thaum ua kev sib txuas lus kho qhov muag, thawj kauj ruam yog los hloov cov cim hluav taws xob, thiab tom qab ntawd hloov cov cim kho qhov muag rau hauv cov tshuab hluav taws xob kom ua tiav lub hom phiaj xa khoom. Qhov kev sib txuas lus yooj yim kho qhov muag muaj kev sib txuas lus kho tshiab, kho qhov muag tau kho qhov muag, thiab cov fiber ntau cov hluav taws xob rau kev teeb kis. Txhawm rau kom muaj qhov zoo ntawm kev sib nraus ntev ntawm kev sib kis ntev ntev thiab txhim kho bandwidth, cov rov muag muag muag thiab cov neeg siv hluav taws xob feem ntau siv.

Hauv qab no yog cov lus qhia luv luv rau tus ua haujlwm ntawm txhua qhov sib xyaw ua ke rau kev sib txuas lus fiber ntau.

Optical Transinter:Hloov cov cim hluav taws xob ua rau cov cim kho kho qhov muag, feem ntau muaj cim taw qhia modulators thiab teeb tsa.

Kos Npe Ntau Yam:Cov khub niam txiv muaj ntau yam kho qhov muag pom ntawm wavelengths rau hauv tib lub khoos kas kho qhov muag tau sib kis tau.

Kho qhov muag repeater:Thaum muaj kev sib kis, nthwv dej thiab lub teeb liab yuav tsis zoo, yog li nws yog qhov tsim nyog los rov qab cov teeb tsa qub zoo nkauj thiab nce lub teeb siv.

Cim Ntshiab Hindultiplexer:Decompose cov teeb liab multipxed rau hauv nws cov phiajcim thawj zaug.

Kho qhov muag tau kho qhov muag)Hloov cov teeb liab tau txais rau cov cim hluav taws xob, tsuas yog sib sau ntawm cov photodetector thiab ib tug demodulator.

Ntu 4. Qhov zoo thiab cov ntawv thov ntawm kev sib txuas lus kho qhov muag

Qhov Zoo ntawm Kev Sib Txuas Lus:

1. Ntev relay deb, yig thiab zog-txuag
Piv txwv li kev sib kis ntawm 10 Gbps (10 lab daus las 0 lossis 1 lub cim tau siv, yuav tsum muaj kev sib txuas lus hluav taws xob, yog tias yuav tsum tau hluav taws xob thiab hloov kho txhua ob peb ob peb puas metres. Piv rau qhov no, siv kev sib txuas lus kho qhov muag tuaj yeem ua tiav qhov kev sib cav deb ntawm 100 km. Lub sijhawm tsawg dua lub teeb liab tau hloov kho, tus nqi qis. Ntawm qhov tod tes, cov khoom siv ntawm cov khoom siv kho qhov muag yog silicon dioxide, uas muaj ntau cov peev txheej thiab cov nqi qis dua li tus nqi liab. Yog li ntawd, kev sib txuas lus kho qhov muag muaj kev lag luam thiab kev txuag hluav taws xob.

2. Cov ntaub ntawv ceev ceev kis thiab muaj kev sib txuas lus zoo

Piv txwv li, tam sim no thaum tham nrog phooj ywg txawv teb chaws lossis sib tham online, lub suab tsis yog lagging li ua ntej. Nyob rau hauv lub sijhawm ntawm kev sib txuas lus, kev sib txuas lus thoob ntiaj teb tsuas yog pub rau kev sib kis tau, ua rau muaj kev sib kis tau ntev dua. Thiab kev sib txuas lus kho qhov muag, nrog kev pab ntawm submarine cable, luv luv qhov kev sib kis, ua cov ntaub ntawv kis tau sai. Yog li ntawd, siv kev sib txuas lus kho qhov muag tuaj yeem ua tau kev sib txuas lus smoother nrog txawv teb chaws.

3. Lub zog tiv thaiv kev cuam tshuam thiab kev tsis pub lwm tus paub

Kev sib txuas lus hluav taws xob yuav muaj teeb meem vim yog siv hluav taws xob hluav taws xob, ua rau txo qis hauv kev sib txuas lus zoo. Txawm li cas los xij, kev sib txuas lus kho qhov muag tsis cuam tshuam los ntawm cov suab hluav taws xob, ua rau muaj kev nyab xeeb dua thiab txhim khu kev qha. Thiab vim yog lub hauv paus ntsiab lus ntawm tag nrho cov kev xav, lub teeb liab tau ua tiav rau lub ntsuas hluav taws xob tawm, yog li kev tsis pub lwm tus paub yog qhov zoo.

4. Cov nqi kis tau loj
Feem ntau, kev sib txuas lus hluav taws xob tsuas tuaj yeem kis tau 10Gbps 0 lossis 1 lub cim ib pliag) tuaj yeem kis tau 1tbps 1 lossis 1 cim) ntawm cov ntaub ntawv.

Daim Ntawv Thov Kev Sib Txuas Lus

Muaj ntau yam zoo rau kev sib txuas lus kho qhov muag, thiab nws tau sib xyaw rau txhua lub ces kaum ntawm peb lub neej txij li kev loj hlob. Cov cuab yeej xws li cov xov tooj txawb xws li siv Internet txuas txhua tus neeg rau lawv thaj chaw, tag nrho lub teb chaws, thiab txawm mus rau lub ntiaj teb kev sib txuas lus network. Piv txwv li, teeb tsa cov khoos phis tawj thiab cov xov tooj txawb ntawm cov chaw nres tsheb hauv zos, thiab yuav kis tau ntau yam ntawm cov khoom sib txuas lus hauv zej zog

Qhov kev paub txog cov haujlwm txhua hnub xws li hu xov tooj, kev lag luam online, thiab binge saib txhua tus neeg txhawb nqa thiab kev pab tom qab lub scenes. Qhov tshwm sim ntawm cov khoom siv kho qhov muag tau ua rau peb lub neej nyiam dua thiab yooj yim.