Muaj ntau hom SFP modules, thiab cov neeg siv zoo tib yam feem ntau tsis muaj txoj hauv kev los pib thaum xaiv SFP modules, lossis txawm tias tsis nkag siab cov ntaub ntawv, qhov muag tsis pom kev ntseeg ntawm cov chaw tsim khoom, ua rau tsis muaj peev xwm xaiv lawv tus kheej tsim nyog lossis kev sib xyaw zoo tshaj plaws.Hauv qab no yog kev faib tawm ntawm SFP modules los ntawm ntau qhov kev xav los pab koj xaiv.
Kev faib tawm los ntawm kev sib kis tus nqi:
Raws li tus nqi sib txawv, muaj 155M, 622M, 1.25G, 2.125G, 4.25G, 8G, thiab 10G.Ntawm lawv, 155M thiab 1.25G (tag nrho hauv mbps) tau siv dav thiab siv dav hauv khw.Kev sib kis tshuab ntawm 10G tau maj mam loj hlob tuaj, tus nqi kuj tseem maj mam txo qis, thiab qhov kev thov tau tsim nyob rau hauv kev nce siab;Txawm li cas los xij, vim muaj qhov txwv kev nkag mus rau lub network tam sim no, tus nqi siv yog nyob rau theem qis thiab kev loj hlob qeeb.Cov duab hauv qab no: SFP module nrog 1.25G thiab 10G nrawm
Kev faib tawm wavelength
Raws li qhov sib txawv wavelengths (optical wavelengths), muaj 850nm, 1310nm, 1550nm, 1490nm, 1530nm, 1610nm.Ntawm lawv, lub module nrog lub wavelength ntawm 850nm yog multimode, nrog ib tug kis tau tus mob ntawm tsawg tshaj li 2KM (siv rau nruab nrab thiab luv luv kis tau tus mob, qhov zoo dua yog qis dua tus nqi ntawm lub network cables, thiab cov kis tau tus mob tsawg dua).Lub module nrog ib tug kis tau tus mob wavelength ntawm 1310nm thiab 1550nm yog ib hom, nrog ib tug kis nrug deb ntawm 2KM-20KM, uas yog kuj pheej yig dua lwm yam peb wavelengths, Yog li nws kuj yog lug siv, feem ntau xaiv los ntawm peb cov kev xaiv yog txaus.Cov modules liab qab (uas yog cov qauv qauv nrog cov ntaub ntawv) tuaj yeem yooj yim tsis meej pem yam tsis muaj kev txheeb xyuas.Feem ntau, cov tuam ntxhab yuav paub qhov txawv xim ntawm lub nplhaib rub, xws li dub rub lub nplhaib rau multimode, nrog lub wavelength ntawm 850nm;Xiav yog ib qho module nrog lub wavelength ntawm 1310nm;Daj sawv cev rau lub module nrog lub wavelength ntawm 1550nm;Ntshav yog ib qho module nrog lub wavelength ntawm 1490nm.
Raws li pom nyob rau hauv daim duab saum toj no, cov xim sib txawv sib txawv ntawm cov wavelengths sib txawv
Raws li pom hauv daim duab saum toj no, nws yog 850nm SFP module
Kev faib tawm raws li hom kev sib kis
Multimode SFP
Hais txog qhov loj me, yuav luag txhua hom fiber ntau optical fibers yog 50/125mm lossis 62.5/125mm, thiab bandwidth (cov ntaub ntawv xa tawm muaj peev xwm ntawm optical fiber) feem ntau yog 200MHz txog 2GHz.Thaum siv multimode optical transceiver, multimode optical fibers tuaj yeem xa mus txog li 5 km.Siv lub teeb-emitting diodes lossis lasers ua lub teeb ci.Lub nplhaib rub los yog lub cev xim yog xim dub.
Ib hom SFP
Qhov loj ntawm ib hom fiber ntau yog 9-10/125mm, thiab piv rau multimode fiber ntau, nws muaj infinite bandwidth thiab qis dua cov yam ntxwv.Yog li ntawd, thaum kis tau mus ntev, ib hom kis tau tus mob ntau dua.Tib hom optical transceiver feem ntau siv rau kev sib kis mus ntev, qee zaum ncav cuag li 150 txog 200 mais.Siv LD lossis LED nrog cov kab nqaim spectral ua lub teeb ci.Lub nplhaib rub lossis lub cev xim yog xiav, daj, lossis ntshav.(Cov wavelengths sib xws rau cov xim sib txawv tau piav qhia meej rau lawv.)