Sab nraum zoov fiber ntau optic cable yog ib tug cable siv nyob rau hauv sab nraum zoov ib puag ncig los kis optical signals. Nws yog dav siv hauv kev sib txuas lus, kev sib txuas lus, thiab kev saib xyuas. Nov yog cov lus qhia ntxaws:
Cov yam ntxwv zoo
Fiber Optic Cable: Raws li cov ntsiab lus tseem ceeb, nws yog lub luag haujlwm rau kev xa cov teeb liab kho qhov muag. Raws li hom, nws tuaj yeem muab faib ua - hom fiber ntau thiab ntau hom fiber ntau. Tib - hom fiber ntau yog tsim rau ntev - nrug, siab - kis tau tus mob ceev; multimode fiber ntau feem ntau siv nyob rau hauv luv luv - nrug, kuj tsis tshua muaj - ceev xwm txheej.
Txhim kho cov Cheebtsam: Feem ntau yog tsim los ntawm siab - lub zog steel hlau lossis aramid fiber ntau, nws txoj haujlwm yog los txhim kho cov neeg kho tshuab lub zog ntawm fiber ntau optic cable, ua kom nws tiv taus tensile, dabtsi yog khoov, thiab lwm yam sab nraud quab yuam thaum tso thiab siv, tiv thaiv cov fiber ntau los ntawm kev puas tsuaj.
Sheath: Lub sheath ntawm sab nraum zoov fiber ntau optic cables muaj ntau yam ntxwv los hloov mus rau lwm qhov chaw sab nraum zoov. Nws feem ntau yog ua los ntawm cov khoom siv polyethylene (PE) lossis polyvinyl chloride (PVC) cov khoom, muaj cov haujlwm xws li dej tsis zoo, dej tsis kam, tiv thaiv tshav ntuj, tiv thaiv corrosion, thiab tiv thaiv nas. Rau fiber ntau optic cables siv nyob rau hauv ib co tshwj xeeb ib puag ncig, lub sheath kuj muaj nplaim taws - retardant thiab high / low temperature resistance.
Filler Material: Sau nruab nrab ntawm cov fiber ntau optical thiab sheath, nws ua haujlwm raws li cov dej tsis zoo thiab cushioning tus neeg sawv cev, tiv thaiv cov dej noo los ntawm kev nkag mus rau cov fiber ntau thiab txo cov kev cuam tshuam ntawm sab nraud.
Hom
Direct-Cov Fiber Optic Cable: Hom fiber ntau optic cable yog ncaj qha faus rau hauv av, muab kev zais zoo thiab kev nyab xeeb. Nws cov yam ntxwv tshwj xeeb yog cov txheej tuab tuab, feem ntau nrog cov ntaub nplaum steel los txhim kho kev tiv thaiv rau cov neeg kho tshuab, xws li kev puas tsuaj los ntawm cov cuab yeej khawb. Haum rau cov cheeb tsam uas muaj kev zoo nkauj zoo nkauj thiab kev ua si hauv av tsawg, xws li suburbs thiab chaw ua si.
Aerial Fiber Optic Cable: Tsim nyob rau hauv cov huab cua siv cov khoom siv hluav taws xob lossis cov tsev ua haujlwm txhawb nqa. Nws feem ntau yog nruab nrog cov kab ncua kev kawm, nrog rau cov fiber ntau optic cable raug tshem tawm los ntawm hooks lossis lwm yam khoom siv kho. Hom no kuj yooj yim rau nruab thiab muaj nqi qis dua, tab sis muaj kev cuam tshuam rau kev puas tsuaj ntuj tsim (xws li cua daj cua dub thiab xob laim). Feem ntau siv nyob rau hauv cov cheeb tsam nyob deb nroog, cheeb tsam roob, thiab lwm qhov chaw uas qhib sparsely thiab ua sparsely ua - thaj chaw.
Dual- Yeeb Nkab Fiber Optic Cable: Pw nyob rau hauv ua ntej - ntsia conduits, uas tiv thaiv cov fiber optic cable los ntawm lwm yam kev puas tsuaj thiab ib puag ncig yam. Cov kab hluav taws xob- hom fiber ntau optic cables muaj qhov me me sab nraud, ua rau lawv yooj yim khiav los ntawm cov kav dej thiab sib faib cov kav dej nrog lwm cov cables (xws li fais fab cables thiab kev sib txuas lus cables), txuag chaw. Lawv tsim nyog rau cov cheeb tsam uas muaj qhov zoo- tsim cov kab txuas hauv av, xws li txoj kev hauv nroog thiab thaj chaw nyob.
Performance Parameters
Attenuation: Qhov no yog hais txog qhov tsis muaj zog ntawm cov teeb liab qhov muag pom kev siv zog tom qab nws tau mus txog ib qho kev ncua deb ntawm cov khoom siv kho qhov muag, ntsuas hauv dB / km. Qhov qis dua qhov attenuation, qhov deb ntawm cov teeb liab kho qhov muag tuaj yeem taug kev hauv fiber ntau, thiab qhov teeb meem zoo dua. Rau ib qho - hom fiber ntau, qhov attenuation ntawm 1310nm wavelength feem ntau tsis ntau tshaj 0.36dB/km, thiab ntawm 1550nm wavelength, tsis ntau tshaj 0.22dB/km; rau multimode fiber ntau, qhov attenuation yog kwv yees li 3.0-3.5dB / km ntawm 850nm wavelength, thiab kwv yees li 0.6-0.8dB / km ntawm 1300nm wavelength.
Bandwidth: Qhov no qhia tau hais tias ntau zaus ntawm cov teeb liab kho qhov muag uas cov fiber ntau tuaj yeem xa tau, ntsuas hauv MHz·km lossis GHz·km. Qhov bandwidth loj dua, qhov ntau dua cov ntaub ntawv fiber ntau tuaj yeem nqa tau, thiab qhov sib kis tau ntau dua. Multimode fiber ntau feem ntau muaj bandwidth ntawm 100 thiab 2000 MHz·km, thaum ib leeg - hom fiber ntau tuaj yeem muaj bandwidth ntawm kaum ntawm GHz·km lossis siab dua.
Tensive Strength: Qhov no yog hais txog lub zog tensile siab tshaj plaws uas lub fiber ntau optical tuaj yeem tiv taus thaum ncab, ntsuas hauv Newtons (N). Lub zog tensile sib txawv nyob ntawm qhov kev qhia tshwj xeeb thiab cov qauv ntawm cov kab hluav taws xob sab nraum zoov, tab sis feem ntau nws yuav tsum tuaj yeem tiv taus yam tsawg 150-300 N ntawm lub zog tensile kom ntseeg tau tias nws tsis tawg vim stretching thaum lub sij hawm installation thiab siv.
Bending Radius: Qhov no muab faib ua static bending radius thiab dynamic dabtsi yog khoov vojvoog. Lub vojvoog khoov zoo li qub yog qhov tsawg kawg nkaus uas tuaj yeem khoov lub vojvoog ntawm qhov kho qhov muag fiber ntau hauv lub xeev zoo li qub, thaum lub vojvoog dynamic dabtsi yog khoov yog qhov tsawg kawg nkaus uas tuaj yeem khoov lub vojvoog thaum lub qhov muag fiber ntau raug rau sab nraud quab yuam (xws li thaum lub sijhawm teeb tsa). Lub vojvoog khoov zoo li qub ntawm ib qho - hom fiber ntau feem ntau tsis pub tsawg dua 15 hli, thiab lub vojvoog dynamic dabtsi yog khoov tsis pub tsawg dua 30 hli; Lub vojvoog khoov zoo li qub ntawm multimode fiber ntau feem ntau tsis pub tsawg dua 10 hli, thiab qhov dynamic dabtsi yog khoov vojvoog tsis tsawg dua 15 hli.
Kev xaiv xaiv
Kev ncua deb thiab tus nqi yuav tsum tau: Txiav txim siab qhov kev ncua deb thiab tus nqi raws li qhov tseeb daim ntawv thov scenario. Rau qhov ntev - nrug, siab - kis tau tus mob ceev, xws li kev sib txuas lus hauv lub cev, ib qho - hom fiber ntau optic cables yuav tsum raug xaiv. Rau luv-nruab deb, qis- daim ntawv thov ceev, xws li kev soj ntsuam hauv zej zog, cov kab hluav taws xob multimode fiber ntau yuav tsim nyog dua.
Environmental Factors: Xav txog qhov tshwj xeeb ib puag ncig ntawm qhov chaw tso, xws li kub, av noo, av thaj chaw, thiab muaj kev cuam tshuam ntawm electromagnetic muaj zog. Hauv cov cheeb tsam txias, xaiv cov fiber ntau optic cables uas muaj qhov tsis zoo -kub tsis kam; nyob rau hauv ib puag ncig uas muaj zog electromagnetic cuam tshuam, xaiv fiber ntau optic cables nrog zoo electromagnetic cuam tshuam kev tiv thaiv.
Mechanical Performance Requirements: Xaiv cov fiber ntau optic cables uas tsim nyog txhua yam khoom raws li txoj kev tso thiab muaj peev xwm sab nraud. Direct- faus fiber optic cables yuav tsum muaj zog tiv thaiv kom siab, nro, thiab nas tom; overhead fiber optic cables yuav tsum tiv taus cua thiab lub ntiajteb txawj nqus; duct -mounted fiber optic cables yuav tsum xav txog kev sib raug zoo nrog cov ducts thiab khoov kev ua tau zoo thaum muab tso rau hauv cov ducts.
Fiber Core suav: Txiav txim siab cov tub ntxhais fiber ntau suav raws li qhov xav tau tiag tiag. Yog tias ntau lub teeb liab yuav tsum tau xa mus ib txhij lossis qhov chaw tshwj xeeb rau kev nthuav dav yav tom ntej, xaiv fiber ntau optic cables nrog cov tub ntxhais ntau dua. Feem ntau sab nraum zoov fiber ntau optic cable suav suav nrog 4, 6, 8, 12, thiab 24 cores.
Tso Kev Ceeb Toom
Kev Npaj thiab Tsim: Ua ntej tso, yuav tsum muaj cov phiaj xwm ntxaws rau tag nrho txoj hauv kev, suav nrog cov kev taw qhia, qhov ntev, thiab cov teeb meem yuav hla. Xav txog yav tom ntej kev xav tau kev nthuav dav thiab khaws qee tus lej ntawm cov cores fiber ntau. Ua kom muaj kev nyab xeeb nyob deb ntawm lwm qhov chaw hauv av (xws li fais fab cables thiab cov kav dej / cov kav dej) kom tsis txhob muaj kev cuam tshuam thiab kev puas tsuaj.
Txheej Txheej Txheej Txheem Xaiv: Xaiv ib txoj hauv kev tsim nyog raws li qhov chaw ib puag ncig thiab cov xwm txheej tiag tiag. Rau kev faus ncaj qha, xyuas kom qhov faus qhov tob raws li qhov yuav tsum tau ua (feem ntau tsis pub tsawg tshaj 0.7m), thiab nteg ib txheej ntawm cov av mos los yog xuab zeb tsawg kawg yog 100mm tuab saum toj thiab hauv qab ntawm fiber optic cable los tiv thaiv nws. Rau kev tso nyiaj siv ua haujlwm, ua tib zoo saib xyuas qhov nro thiab qhov siab ntawm qhov ncua kev kawm cable kom tsis txhob cuam tshuam cov neeg taug kev thiab tsheb khiav. Rau kev tso cov kav dej, xyuas kom cov kav dej huv si thiab tsis muaj cov khoom ntse kom tsis txhob khawb cov fiber ntau cable.
Kev Tiv Thaiv Kev Tiv Thaiv: Kev tiv thaiv tshwj xeeb yuav tsum tau ua thaum hla cov ntu tshwj xeeb xws li kev tsheb ciav hlau, txoj kev loj, thiab cov dej ntws. Piv txwv li, thaum hla kev tsheb ciav hlau thiab txoj kev loj, txoj hauv kev xws li cov yeeb nkab jacking lossis kev taw qhia drilling tuaj yeem siv los khiav cov fiber ntau optic cable los ntawm cov hlau lossis cov kav dej yas rau kev tiv thaiv; Thaum hla cov dej ntws, kev tso dej hauv qab tuaj yeem siv tau, ua haujlwm armored fiber optic cables lossis lwm yam kev ntsuas kev ntsuas kom muaj kev nyab xeeb ntawm fiber ntau optic cable.
Kev txheeb xyuas thiab sau cia: Thaum lub sij hawm tso cov txheej txheem, qhov pib taw tes, qhov kawg taw tes, tig cov ntsiab lus, thiab ceg ntsiab lus ntawm fiber ntau optic cable yuav tsum raug txheeb xyuas kom meej thiab cov ntaub ntawv ntxaws ntxaws. Kev txheeb xyuas yuav tsum suav nrog cov ntaub ntawv xws li fiber ntau optic cable tus qauv, core suav, thiab txoj hauv kev rau kev saib xyuas thiab kev tswj hwm yav tom ntej.