Cov fiber optic yog cov fiber ua los ntawm iav lossis yas, thiab cov fiber nws tus kheej yog qhov tsis yooj yim tawg thiab yooj yim tawg. Kev qhwv cov fiber me me hauv lub hnab yas tso cai rau nws khoov yam tsis tawg. Lub cable nrog cov fiber optic qhwv hauv lub hnab tiv thaiv hu ua optical cable. Puas tuaj yeem khoov cov cable optical raws li xav tau?
Vim tias cov fiber muaj kev nkag siab rau kev ntxhov siab, kev khoov nws tuaj yeem ua rau lub teeb liab optical xau los ntawm cov fiber cladding, thiab thaum qhov khoov ua rau pom tseeb dua, lub teeb liab optical yuav xau ntau dua. Kev khoov kuj tseem tuaj yeem ua rau microcracks uas tuaj yeem ua rau lub fiber puas tsuaj mus tas li. Dhau li ntawm qhov teeb meem nws tus kheej, cov ntsiab lus microbending nyuaj rau nrhiav thiab xav tau cov khoom siv kuaj kim; tsawg kawg, cov jumpers yuav tsum tau ntxuav lossis hloov. Kev khoov fiber tuaj yeem ua rau fiber attenuation. Tus nqi ntawm attenuation vim yog fiber bending nce ntxiv raws li qhov khoov radius txo qis. Kev txo qis vim yog khoov yog ntau dua ntawm 1550 nm dua li ntawm 1310 nm, thiab txawm ntau dua ntawm 1625 nm. Yog li ntawd, thaum txhim kho fiber jumpers, tshwj xeeb tshaj yog nyob rau hauv ib puag ncig high-density cabling, lub jumper yuav tsum tsis txhob khoov dhau nws qhov khoov radius. Yog li, qhov khoov radius tsim nyog yog dab tsi?
Lub vojvoog khoov ntawm lub fiber yog lub kaum sab xis uas lub fiber tuaj yeem khoov tau zoo ntawm txhua qhov chaw. Lub vojvoog khoov ntawm fiber txawv rau txhua lub cables thiab cov hlua khi thiab tuaj yeem sib txawv nyob ntawm hom cable thiab cov txheej txheem tsim khoom. Lub vojvoog khoov tsawg kawg nkaus nyob ntawm txoj kab uas hla thiab hom cable optical; cov mis feem ntau siv yog: lub vojvoog khoov tsawg kawg nkaus = txoj kab uas hla sab nraud ntawm cable optical x ntau ntawm txoj kab uas hla cable optical.
Tus qauv ANSI/TIA/EIA-568B.3 tshiab txhais cov qauv khoov tsawg kawg nkaus thiab cov qauv siab tshaj plaws rau 50/125 micron thiab 62.5/125 micron fiber optic cables. Qhov khoov tsawg kawg nkaus nyob ntawm cov fiber optic cable tshwj xeeb. Yog tsis muaj kev ntxhov siab, qhov khoov ntawm cov fiber optic cable feem ntau yuav tsum tsis pub tsawg dua kaum npaug ntawm txoj kab uas hla sab nraud (OD) ntawm cov fiber optic cable. Yog tsis muaj kev thauj khoom tensile, qhov khoov radius yog 15 npaug ntawm txoj kab uas hla sab nraud ntawm cov fiber optic cable. Cov qauv kev lag luam rau cov kab ib hom ib txwm muaj feem ntau qhia txog qhov khoov radius tsawg kawg nkaus ntawm kaum npaug ntawm txoj kab uas hla sab nraud ntawm cov jacketed cable lossis 1.5 nti (38 hli), qhov twg ntau dua. Cov G652 fiber feem ntau siv muaj qhov khoov radius tsawg kawg nkaus ntawm 30 hli.
G657, uas tau siv rau xyoo tas los no, muaj qhov khoov me dua, suav nrog G657A1, G657A2, thiab G657B3. Qhov khoov tsawg kawg nkaus rau G657A1 yog 10 hli, rau G657A2 nws yog 7.5 hli, thiab rau G657B3 nws yog 5 hli. Hom fiber no yog raws li G652D fiber, uas txhim kho cov yam ntxwv khoov thiab cov yam ntxwv geometric ntawm cov fiber, yog li txhim kho nws cov yam ntxwv sib txuas. Nws tseem hu ua khoov attenuation-insensitive fiber. Feem ntau siv hauv FTTx thiab FTTH, nws tsim nyog rau kev siv hauv cov chaw me me hauv tsev lossis cov ces kaum.
Ob qho tib si fiber tawg thiab kev txo qis ntxiv tuaj yeem cuam tshuam loj heev rau kev ntseeg siab ntawm lub network mus sij hawm ntev, cov nqi khiav lag luam hauv network, thiab lub peev xwm los tswj thiab loj hlob ntawm cov neeg siv khoom. Yog li ntawd, peb yuav tsum nkag siab meej txog qhov tsawg kawg nkaus ntawm cov fiber khoov radius kom khaws cov cable lossis patch cord kom zoo.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-11-2022
