Fiber optic kev faib tawm

Raws li cov qauv kev faib tawm thiab cov txheej txheem ntawm cov fibers sib txawv, tib lub fiber ntau optical yuav muaj cov npe sib txawv.
Kev faib tawm los ntawm cov khoom siv fiber ntau
Raws li cov khoom siv ntawm fiber ntau optical, lawv tuaj yeem muab faib ua quartz optical fibers thiab tag nrho cov yas kho qhov muag fibers.
Quartz fiber feem ntau yog hais txog cov khoom siv kho qhov muag uas tsim los ntawm doped quartz core thiab doped quartz cladding. Hom fiber ntau no tau poob qis heev thiab nruab nrab dispersion. Feem ntau ntawm kev sib txuas lus optical fibers yog quartz fibers.
Tag nrho cov yas kho qhov muag fiber ntau yog ib hom tshiab ntawm optical fiber rau kev sib txuas lus, uas tseem nyob rau hauv txoj kev loj hlob thiab kev sim theem. Tag nrho cov yas kho qhov muag fibers muaj qhov poob siab thiab cov tub ntxhais tuab (inch {{0}}} μ m) Tus lej aperture (NA) loj (feem ntau yog 0.3-0.5, uas tuaj yeem ua ke nrog Lub teeb qhov chaw nrog cov teeb pom kev loj dua) thiab muaj cov nqi tsim khoom tsawg. Optical fiber yog tsim rau cov ntawv thov nrog luv luv, xws li kev sib txuas hauv computer hauv tsev thiab kev sib txuas lus hauv nkoj.
Kev faib tawm los ntawm refractive index faib ntawm fiber ntau profiles
Raws li qhov sib txawv refractive index faib ntawm fiber ntau profiles, hom fibers yuav muab faib ua kauj ruam hom fibers thiab gradient hom fibers.
Kev faib tawm los ntawm hom kis tau tus mob
Raws li tus naj npawb ntawm optical fiber kis tau tus mob hom, hom optical fibers yuav muab faib ua multimode optical fibers thiab ib hom optical fibers.
Tib hom fiber ntau yog fiber ntau uas tuaj yeem kis tau ib hom nkaus xwb. Ib hom fiber ntau tuaj yeem kis tau tus qauv tseem ceeb (hom kev txiav txim qis tshaj), yam tsis muaj kev cuam tshuam kev ncua sijhawm sib txawv, thiab muaj bandwidth loj dua li multimode fiber ntau, uas yog qhov tseem ceeb heev rau kev sib kis tus lej siab. Hom teb kab ntawm ib hom fiber ntau tsuas yog ob peb micrometers (μ m) Nws cov bandwidth feem ntau yog ib lossis ob qhov kev txiav txim siab ntau dua li ntawm gradient multimode fibers. Yog li ntawd, nws yog qhov tsim nyog rau kev muaj peev xwm, kev sib txuas lus ntev.
Kev faib tawm raws li cov qauv thoob ntiaj teb (raws li ITU-T cov lus pom zoo)
Txhawm rau tsim kom muaj kev sib koom ua ke thoob ntiaj teb tus qauv rau kho qhov muag fiber ntau, International Telecommunication Union (ITU-T) tau tsim ib qho kev sib koom ua ke kho qhov muag fiber ntau (G standard). Raws li ITU-T cov lus pom zoo ntawm optical fibers, hom optical fibers tuaj yeem muab faib ua:
G. 651 Fiber (50/125 μ M multimode maj hloov refractive index fiber)
G. 652 fiber ntau (non dispersion shifted fiber)
G. 653 fiber ntau (dispersion hloov fiber ntau DSF)
G. 654 fiber ntau (txiav tawm wavelength hloov fiber ntau)
G. 655 fiber (tsis xoom dispersion hloov pauv fiber ntau).
Txhawm rau ua kom tau raws li kev xav tau ntawm cov thev naus laus zis tshiab, G.652 fiber ntau optic cables tau muab faib ua peb pawg: G.652A, G.652B, thiab G.652C. G.655 fiber optic cables kuj tau muab faib ua ob pawg: G.655A thiab G.655B.
Raws li IEC tus qauv kev faib tawm, hom optical fibers tau muab faib ua
Class A multimode fiber ntau:
A1a multimode fiber ntau (50/125 μ M-hom multimode fiber)
A1b multimode fiber ntau (62.5 / 125 μ M-hom multimode fiber)
A1d multimode fiber ntau (100/140 μ M-hom multimode fiber)
Class B ib hom fiber ntau:
B1.1 sib haum mus rau G652 optical fiber, thiab B1.3 optical fiber tau raug ntxiv rau coj mus rau G652C optical fiber.
B1.2 sib raug rau G654 fiber ntau optic
B2 fiber sib raug rau G.653 fiber ntau
B4 fiber sib raug rau G.655 fiber ntau