Cov yam ntxwv ntawm ib hom fiber ntau yog dab tsi?

Cov yam ntxwv ntawm Ib hom fiber ntauIb phau ntawv qhia tiav

Ib hom fiber ntau (SMF) yog ib hom fiber ntau uas tsim los nqa lub teeb ncaj qha los ntawm lub fiber nrog qhov poob tsawg kawg nkaus. Nws yog siv dav hauv kev sib txuas lus thiab kev sib txuas lus vim nws qhov kev ua tau zoo tshaj plaws ntawm kev deb. Ntawm no, peb nkag mus rau hauv cov yam ntxwv tseem ceeb uas ua rau SMF ua haujlwm tau zoo heev. ib hom fiber ntau ua ib qho kev xaiv zoo tshaj plaws rau kev xa cov ntaub ntawv ceev ceev.

1. Lub plawv txoj kab uas hla:
Ib hom fiber ntau muaj lub hauv paus me me, feem ntau nyob ib ncig ntawm 8 txog 10 micrometers. Lub hauv paus me me no tsuas yog tso cai rau ib hom teeb pom kev zoo los nthuav dav, txo qhov kev faib tawm modal thiab ua kom cov ntaub ntawv xa mus ntev dua yam tsis muaj kev puas tsuaj.DACion.

2. Kev txo qis qis:
Ib qho ntawm cov yam ntxwv tseem ceeb ntawm cov fiber ib hom yog nws qhov qis attenuation. Attenuation txhais tau tias poob ntawm lub zog teeb liab thaum nws mus ncig los ntawm cov fiber. Cov fiber ib hom muaj attenuation tus nqi qis li 0.2 dB / km, ua rau lawv zoo tagnrho rau kev sib txuas lus ntev.

3. Bandwidth siab:
Cov fibers ib hom muaj peev xwm bandwidth siab heev. Qhov no txhais tau tias lawv tuaj yeem txhawb nqa cov ntaub ntawv siab dua piv rau cov fibers multimode. Bandwidth siab yog qhov tseem ceeb rau cov ntawv thov uas xav tau kev xa cov ntaub ntawv ntau, xws li internet backbones thiab cov chaw khaws ntaub ntawv.

4. Kev sib kis mus ntev:
Vim lawv qhov kev txo qis thiab bandwidth siab, cov fibers ib hom yog qhov zoo tagnrho rau kev sib kis mus ntev. Lawv tuaj yeem xa cov teeb liab hla qhov deb tshaj 100 kilometers yam tsis tas yuav siv cov teeb liab amplifiers lossis repeaters, ua rau lawv pheej yig rau kev xa mus rau hauv network loj.

5. Kev sib raug zoo ntawm qhov ntev ntawm lub wavelength:
Cov fibers ib hom yog sib xws nrog ntau yam wavelengths, feem ntau ua haujlwm hauv 1310 nm thiab 1550 nm qhov rais. Cov wavelengths no tsis tshua muaj kev poob thiab kev tawg, ntxiv kev txhim kho cov fiber ntau thiab kev ua tau zoo.

6. Kev cuam tshuam tsawg kawg nkaus:
Cov fibers ib hom tsis tshua muaj kev cuam tshuam los ntawm cov chaw sab nraud, xws li kev cuam tshuam hluav taws xob (EMI) thiab kev cuam tshuam xov tooj cua zaus (RFI). Qhov no ua kom muaj lub teeb liab huv dua thiab txhim khu kev qha, uas yog qhov tseem ceeb rau kev sib txuas lus tseem ceeb.