Optical fiber yog ib qho fiber ntau ua los ntawm iav los yog yas, thiab fiber ntau nws tus kheej yog ib qho yooj yim heev thiab tawg yooj yim. Thiab encapsulating cov me me fiber ntau hauv lub tsho yas tso cai rau nws khoov yam tsis muaj kev tawg. Lub cable nrog optical fiber qhwv hauv lub tsho tiv thaiv yog qhov kho qhov muag cable. Lub optical cable puas tuaj yeem khoov ntawm qhov xav tau?
Txij li thaum cov fiber ntau rhiab heev rau strain, khoov nws tuaj yeem ua rau cov teeb liab kho qhov muag los ntawm fiber ntau cladding, thiab raws li qhov khoov yuav steeper, cov teeb liab optical yuav xau ntau dua. Khoov tuaj yeem ua rau microcracks uas tuaj yeem ua rau cov fiber ntau puas. Ntxiv rau qhov teeb meem, cov ntsiab lus microflex yog qhov nyuaj rau nrhiav thiab yuav tsum tau siv cov cuab yeej ntsuas kim, yam tsawg kawg ntawm cov txuas hniav yuav tsum tau ntxuav los yog hloov. Fiber dabtsi yog khoov tuaj yeem ua rau fiber ntau attenuation. Tus nqi ntawm attenuation vim fiber dabtsi yog khoov nce raws li lub vojvoog ntawm curvature txo. Lub attenuation vim khoov yog ntau dua ntawm 1550 nm tshaj li ntawm 1310 nm, thiab ntau dua ntawm 1625 nm. Yog li ntawd, thaum txhim kho fiber ntau jumpers, tshwj xeeb tshaj yog nyob rau hauv ib tug high-density cabling ib puag ncig, lub jumper yuav tsum tsis txhob yuav tsum tau khoov tshaj nws lub peev xwm khoov vojvoog. Yog li dab tsi yog qhov tsim nyog lub voj voog ntawm curvature?
Lub vojvoog khoov fiber ntau yog lub kaum sab xis uas cov fiber ntau tuaj yeem ruaj ntseg khoov ntawm txhua qhov chaw. Fiber dabtsi yog khoov radii yog txawv rau tag nrho cov cables los yog patch cords thiab tej zaum yuav txawv nyob ntawm seb hom cable los yog li cas nws yog manufactured. Qhov tsawg kawg nkaus dabtsi yog khoov vojvoog nyob ntawm txoj kab uas hla thiab hom ntawm cov kho qhov muag cable, feem ntau yog siv cov mis: qhov tsawg kawg nkaus dabtsi yog khoov vojvoog = sab nraud txoj kab uas hla ntawm lub kho qhov muag cable x ntau yam ntawm cov kho qhov muag cable.
Tus qauv tshiab ANSI/TIA/EIA-568B.3 txhais tau hais tias qhov tsawg kawg nkaus khoov vojvoog qauv thiab lub zog tensile siab tshaj plaws rau 50/125 micron thiab 62.5/125 micron fiber optic cables. Qhov tsawg kawg nkaus khoov vojvoog yuav nyob ntawm qhov tshwj xeeb fiber optic cable. Nyob rau hauv rooj plaub uas tsis muaj qhov nro, lub vojvoog dabtsi yog khoov ntawm qhov kho qhov muag cable feem ntau yuav tsum tsis pub tsawg tshaj kaum npaug ntawm txoj kab uas hla sab nraud (OD) ntawm qhov kho qhov muag cable. Nyob rau hauv tensile loading, lub vojvoog dabtsi yog khoov ntawm qhov kho qhov muag cable yog sab nraud txoj kab uas hla ntawm optical cable 15 zaug. Cov qauv kev lag luam rau ib hom kab hluav taws xob ib txwm siv feem ntau qhia qhov tsawg kawg nkaus khoov vojvoog ntawm kaum npaug ntawm txoj kab uas hla ntawm lub tsho cable los yog 1.5 ntiv tes (38 hli), qhov twg ntau dua. Feem ntau siv G652 fiber ntau muaj qhov tsawg kawg nkaus khoov vojvoog ntawm 30mm.
G657, uas tau siv nyob rau hauv xyoo tas los no, muaj lub vojvoog me me khoov, suav nrog G657A1, G657A2 thiab G657B3 Qhov qis kawg ntawm qhov nkhaus ntawm G657A1 yog 10 hli, G657A2 fiber ntau yog 7.5 hli, thiab fiber ntau G657B3 yog 5 hli. Hom fiber ntau no yog raws li G652D fiber ntau, uas txhim kho qhov khoov attenuation yam ntxwv thiab cov yam ntxwv geometric ntawm cov fiber, yog li txhim kho cov yam ntxwv ntawm cov fiber ntau, kuj hu ua dabtsi yog khoov attenuation insensitive fiber. Feem ntau siv nyob rau hauv FTTx, FTTH, haum rau siv nyob rau hauv me me nyob rau hauv tsev qhov chaw los yog ces kaum.
Ob qho fiber ntau so thiab nce attenuation tuaj yeem ua rau muaj kev cuam tshuam loj rau kev cia siab rau lub network ntev, cov nqi khiav lag luam, thiab muaj peev xwm tswj tau thiab loj hlob ntawm cov neeg siv khoom. Yog li ntawd, peb yuav tsum paub meej txog qhov tsawg kawg nkaus khoov lub vojvoog ntawm cov fiber ntau kom cov cable los yog thaj qaum rau hauv kev ua haujlwm zoo.
Lub sij hawm xa tuaj: Nov-11-2022
