Fiber optic cables tau hloov pauv txoj kev peb sib txuas lus niaj hnub no. Lawv muab kev kub ceev, qis-latency, thiab txhim khu kev qha network infrastructure rau peb cov kev xav tau niaj hnub no. Txawm li cas los xij, tsis yog txhua qhov fiber ntau optic cables yog tsim sib npaug. Muaj ntau hom fiber ntau optic cables, txhua tus muaj cov yam ntxwv sib txawv thiab cov lus qhia tshwj xeeb. Hauv tsab xov xwm no, peb yuav tham txog ntau hom fiber ntau optic cables, tshwj xeeb yog G.652A, G.652B, G.652C, thiab G.652D, thiab lawv lub ntsiab lus.
G.652A yog thawj tiam ntawm ib hom fiber ntau (SMF) optic cables. Nws muaj ib txoj kab uas hla ntawm 8-10 micrometers thiab cladding txoj kab uas hla ntawm 125 micrometers. Tus "A" hauv G.652A sawv cev rau "attenuation," uas yog hais txog ntau npaum li cas lub teeb liab txo thaum nws mus los ntawm fiber ntau. G.652A muaj tus nqi qis qis thiab tsim nyog rau ob qho tib si ntev-ntev thiab hauv nroog daim ntawv thov. Txawm li cas los xij, nws muaj qhov sib txawv siab, uas ua rau muaj kev cuam tshuam ntawm cov teeb liab kis tau tus mob thiab txwv nws txoj kev sib kis.
G.652B yog qhov thib ob tiam ntawm SMF fiber optic cables. Nws muaj ib txoj kab uas hla ntawm 8-10 micrometers thiab cladding txoj kab uas hla ntawm 125 micrometers, ib yam li G.652A. Tus "B" hauv G.652B sawv cev rau "khoov-resistant." G.652B muaj qhov sib txawv qis dua piv rau G.652A, ua rau nws haum rau kev sib kis mus ntev. Ntxiv mus, nws tau txhim kho cov khoom siv kho tshuab, ua rau nws tiv taus ntau dua rau kev khoov thiab lub cev puas tsuaj.
G.652C yog lub cim thib peb ntawm SMF fiber ntau optic cables. Nws muaj ib txoj kab uas hla ntawm 8-10 micrometers thiab cladding txoj kab uas hla ntawm 125 micrometers. Lub "C" hauv G.652C sawv cev rau "txiav," hais txog lub wavelength uas cov fiber ntau tsis tuaj yeem txhawb nqa txhua hom kev nthuav tawm tshwj tsis yog hom qauv. G.652C muaj qhov kev txiav tawm qis dua piv rau G.652B, uas tso cai rau cov ntaub ntawv xa mus ntau dua nyob rau qhov ntev dua. Nws kuj tau txhim kho chromatic dispersion, ua rau nws haum rau high-ceev cov ntaub ntawv kis tau tus mob nyob ntev.
G.652D yog lub cim thib plaub ntawm SMF fiber ntau optic cables. Nws muaj ib txoj kab uas hla ntawm 8-10 micrometers thiab cladding txoj kab uas hla ntawm 125 micrometers. Tus "D" hauv G.652D sawv cev rau "dispersion-shifted," xa mus rau lub wavelength ntawm qhov siab tshaj plaws dispersion, uas tau hloov mus deb ntawm 1.55-micrometer ua haujlwm wavelength. G.652D muaj tus nqi qis qis tshaj qhov dav wavelength ntau yam, ua rau nws tsim nyog rau kev xa cov ntaub ntawv ceev ceev tshaj qhov ntev. Nws kuj tseem muaj qhov kev txiav tawm qis qis, zoo ib yam li G.652C, tso cai rau cov ntaub ntawv sib kis tau ntev dua.
Hauv kev xaus, kev xaiv ntawm fiber ntau optic cable nyob ntawm qhov kev xav tau tshwj xeeb, suav nrog kev sib kis deb, cov ntaub ntawv kis tau tus mob, thiab tiv thaiv kev khoov thiab kev puas tsuaj rau lub cev. G.652A, G.652B, G.652C, thiab G.652D yog tag nrho SMF fiber optic cables, txhua tus muaj cov yam ntxwv sib txawv thiab cov lus qhia tshwj xeeb. Kev nkag siab txog cov kev qhia tshwj xeeb no tuaj yeem pab cov engineers network thiab cov kws tshaj lij ua cov kev txiav txim siab thaum tsim thiab siv fiber ntau optic tes hauj lwm.