Fiber optic cables ua lub luag haujlwm tseem ceeb hauv kev sib txuas lus hauv kev sib txuas lus, muaj ob hom fiber ntau optic cables hauv khw. Ib qho yog ib hom thiab lwm qhov yog ntau hom fiber ntau optic cable. Feem ntau ntau hom yog prefixed nrog "OM (Optical multi-mode fiber)" thiab ib hom yog prefixed nrog "OS (Optical ib hom fiber ntau)".
Muaj plaub hom ntau hom: OM1, OM2, OM3 thiab OM4 thiab Ib hom muaj ob hom OS1 thiab OS2 hauv ISO / IEC 11801 cov qauv. Dab tsi yog qhov txawv ntawm OM thiab OS2 fiber ntau optic cables? Hauv qab no, peb yuav qhia qhov txawv ntawm ob hom cables.
1.Qhov sib txawv ntawm cov tub ntxhais txoj kab uas hlathiab hom fiber ntau
OM thiab OS hom cables muaj qhov sib txawv loj hauv txoj kab uas hla. Multi-mode fiber core inch yog 50 µm thiab 62.5 µm feem ntau, tab sis OS2 ib leeg-hom core inch yog 9 µm.
Optical Fiber Core Diameters
Hom fiber ntau
2.Qhov txawv ntawm attenuation
Lub attenuation ntawm OM cable yog siab dua OS cable, vim hais tias ntawm cov tub ntxhais txoj kab uas hla loj dua. OS cable muaj txoj kab uas hla nqaim, yog li lub teeb liab tuaj yeem dhau los ntawm fiber ntau yam tsis muaj kev cuam tshuam rau ntau zaus thiab ua kom lub atenuation kom tsawg. Tab sis OM cable muaj qhov loj dua cov tub ntxhais txoj kab uas hla uas txhais tau tias nws yuav poob ntau lub teeb lub zog thaum lub teeb liab kis tau tus mob.
3. Qhov sib txawv nyob deb
Qhov kev ncua deb ntawm ib hom fiber ntau tsis pub tsawg tshaj 5km, uas feem ntau yog siv rau kev sib txuas lus ntev; thaum ntau hom fiber ntau tuaj yeem ncav cuag li 2km, thiab nws tsim nyog rau kev sib txuas lus luv luv hauv cov tsev lossis tsev kawm ntawv.
| Fiber hom | Nyob deb | ||||||
| 100BASE-FX | 1000BASE-SX | 1000BASE-LX | 1000BASE-SR | 40GBASE-SR4 | 100GBASE-SR10 | ||
| Tib hom | OS 2 | 200 M | 5km ua | 5km ua | 10 KM | — | — |
| Ntau hom | OM 1 | 200 M | 275m ua | 550M (Xav tau hom txias thaj qaum) | — | — | — |
| OM 2 | 200 M | 550 M | — | — | — | ||
| OM 3 | 200 M | 550 M | 300 M | 100 M | 100 M | ||
| OM 4 | 200 M | 550 M | 400 M | 150 M | 150 M | ||
4. Qhov sib txawv ntawm wavelength & Light Source
Muab piv rau OS cable, OM cable muaj peev xwm zoo dua "lub teeb sib sau ua ke". Cov tub ntxhais loj loj fiber ntau tso cai rau kev siv cov khoom siv hluav taws xob qis, xws li LEDs thiab VCSELs ua haujlwm ntawm 850nm thiab 1300 nm wavelengths. Thaum OS cable feem ntau ua haujlwm ntawm 1310 lossis 1550 nm wavelengths uas yuav tsum tau siv laser ntau dua.
5. Qhov sib txawv ntawm bandwidth
OS cable txhawb kev ci ntsa iab thiab ntau lub teeb pom kev zoo nrog qis qis qis, muab qhov kev xav tsis muaj kev txwv bandwidth. Thaum OM cable cia siab rau kev sib kis ntawm ntau hom teeb pom kev zoo nrog tsawg dua brightness thiab siab dua attenuation uas muab kev txwv ntawm bandwidth.
6. Qhov sib txawv ntawm cable xim sheath
Xa mus rau TIA-598C tus qauv txhais, singl-mode OS cable feem ntau coated nrog daj txheej txheej, thaum ntau hom cable coated nrog oragen lossis aqua xim.
Post lub sij hawm: Jan-30-2023
