Fiber-optic cable - ib tug nyias muaj nyias ib hom ntawm cabling xov xwm

Rau hnub tim, fiber optic cable yog ib tug txawv hom nyob rau hauv lub cable ib puag ncig. Raws li qhov yooj yim caij protrudes iav, uas mus rau kis cov lus qhia tshaj ntev ncua kev tsis tseem ceeb tsis ceev. Kis nyob rau hauv cov ntaub ntawv no nqa tawm tsis los ntawm ib tug hluav taws xob lub teeb liab, thiab ua tsaug rau lub teeb mem tes, uas yuav pab tau muab ib tug high school cov suab nrov kev tiv thaiv thiab kev ruaj ntseg ntawm kis cov lus qhia. Txawm li cas los, installation ntawm fiber optic cable tsim ib co teeb meem vim hais tias nws yuav tsum tau thaum lub sij hawm installation ntawm connectors micron raug. Los ntawm no yuav ntxiv seb attenuation txheej txheem.

Feem ntau, tso fiber-optic cable yog ua li cas manually los yog nrog rau kev siv tshwj xeeb winches. Nyob rau hauv tus txheej txheem ntawm kev ua hauj lwm yuav tsum coj mus rau hauv tus account ib tug ntau yam uas yuav cuam tshuam lub sij hawm. Thaum pw tshwj xeeb apparatus yuav tsum tau siv kom pab txo cov kev sib txhuam coefficient thiab kom tsis txhob muaj kev puas tsuaj rau lub dabtsi yog khoov qhov chaw. Zawm yog nqa tawm nrog winches, txiav txim traction. Thaum kawg ntawm lub cable dej tshuav ntug rau lub cable thawv.

Tej fiber optic cable yuav ua tau ib hom los yog multimode. Nyob rau hauv thawj cov ntaub ntawv, tag nrho cov rays kov yeej tej yam kev xeeb receiver ib txhij. Rau no hom ntawm haum laser transceivers kis lub teeb nrog xav wavelength. Nws yuav tsum tau hais tias tus nqi yog heev siab heev, tab sis nyob rau hauv lub nyob ze yav tom ntej, qhov kev xaiv no yog xav tau tus tseem pheej.

Raws li rau lub multimode counterparts, lawv muaj loj variation, vim uas muaj distortion nyob rau kev txais tos. Lawv tej chaw yog vim feem ntau rau cov txheeb ze cheapness. Lub teeb liab ncua nyob rau hauv xws tes hauj lwm yuav kwv yees li sib haum mus rau hluav taws xob cable tes hauj lwm.

Txawm tias fiber optic cable thiab muaj ib tug heev muaj zog damping, nws muaj ib tug xam qhovkev chromatic dispersion, uas yog nyob rau hauv ib tug txawv lub teeb kis tau tus mob los ntawm cov iav. Yog li, lub teeb lub teeb liab yuav decomposed rau hauv ib tug neeg xim nqaij daim tawv Cheebtsam (zaj sawv nyhuv). Nyob rau ib tug me me ya nws yog tau txais mus rau hauv lub tom ntej no me ntsis, uas thaum kawg ua rau yus poob ntawm cov ntaub ntawv. Txawm li cas los, qhov no siv tsis tau rau ib leeg-hom cables, qhov twg kis tau teeb muaj tib zaus. Thaum lawv yog siv ib tug chromatic dispersion nyhuv tsis tshwm sim.

Nyob rau hauv qhov tseeb, lub fiber optic cable muaj ib tug zoo li tus qauv mus rau ib tug coaxial fais nus muag, tab sis es tsis txhob ntawm tooj liab hlau nyob rau hauv nruab nrab yog ib tug nyias iav fiber. Raws li nrog rwb thaiv tsev ntawm no yog iav los yog yas sheath uas txwv tsis pub tawm ntawm lub teeb. Peb yuav hais tias ua ib tug tag nrho rog xav txog ntawm lub teeb los ntawm txhais tau tias ntawm ob yam tshuaj uas muaj ntau refractive index. Heev tsis tshua muaj siv hlau sheathing, raws li nws ua rau tsis muaj kev nkag siab rau kev tiv thaiv tus kho qhov muag fiber los ntawm electromagnetic cuam. Tiam sis qee zaum siv xws li kev tiv thaiv thaum koj xav tau ib tug kho tshuab tiv thaiv los ntawm cov ib puag ncig.