Kukho iintlobo ezininzi zeemodyuli ze-SFP, kwaye abasebenzisi abaqhelekileyo bahlala bengenayo indlela yokuqalisa xa bekhetha iimodyuli ze-SFP, okanye bangaziqondi ulwazi, bakholelwa ngokungaboniyo kumenzi, okubangela ukungakwazi ukukhetha okufanelekileyo okanye ukudibanisa okulungileyo. Ngezantsi ulwahlulo lweemodyuli ze-SFP ukusuka kwiimbono ezahlukeneyo ukukunceda ukhethe.
Ukuhlelwa ngokwezinga losulelo:
Ngokwemilinganiselo eyahlukeneyo, kukho i-155M, 622M, 1.25G, 2.125G, 4.25G, 8G, kunye ne-10G. Phakathi kwazo, i-155M kunye ne-1.25G (zonke kwi-mbps) zisetyenziswa kakhulu kwaye zisetyenziswa ngokubanzi kwiimarike. Itekhnoloji yokuhanjiswa kwe-10G iye yakhula ngokuthe ngcembe, iindleko nazo ziyancipha ngokuthe ngcembe, kwaye imfuno iphuhliswa kwindlela ephezulu; Nangona kunjalo, ngenxa yezinga elilinganiselweyo lothungelwano lokungena elikhoyo ngoku, izinga lokusetyenziswa likwinqanaba eliphantsi kwaye ukukhula kuyacotha. Umfanekiso olandelayo: Imodyuli ye-SFP ene-1.25G kunye ne-10G yesantya
Ukuhlelwa kweWavelength
Ngokobude bamaza ahlukeneyo (i-optical wavelengths), kukho i-850nm, 1310nm, 1550nm, 1490nm, 1530nm, 1610nm. Phakathi kwabo, imodyuli ene-wavelength ye-850nm i-multimode, kunye nomgama wokuhambisa ongaphantsi kwe-2KM (esetyenziselwa ukuhanjiswa komgama ophakathi kunye omfutshane, inzuzo ingaphantsi kweendleko zeentambo zenethiwekhi, kwaye ilahleko yokudluliselwa iphantsi). Imodyuli ene-wavelength yothumelo lwe-1310nm kunye ne-1550nm yimowudi enye, kunye nomgama wothumelo we-2KM-20KM, ophantsi kakhulu kunezinye ezintathu zamaza, ngoko ke isetyenziswa ngokubanzi, ngokuqhelekileyo ukukhetha kwezi zikhetho ezintathu kwanele. Iimodyuli ezinqunu (eziyimodyuli eziqhelekileyo kunye naluphi na ulwazi) zinokudideka ngokulula ngaphandle kokuchongwa. Ngokubanzi, abavelisi baya kwahlula umbala weringi yokutsala, efana ne-black pull ring ye-multimode, enobude obungama-850nm; Ibhulowu yimodyuli enobude be-1310nm; Umthubi umele imodyuli enobude obuyi-1550nm; Umfusa yimodyuli enobude obuyi-1490nm.
Njengoko kubonisiwe kulo mzobo ungentla, imibala eyahlukileyo ihambelana namaza ahlukeneyo
Njengoko kubonisiwe kulo mfanekiso ungentla, yimodyuli ye-850nm ye-SFP
Ukuhlelwa okusekwe kwindlela yothumelo
I-Multimode SFP
Ngokumalunga nobukhulu, phantse zonke iintsinga zemultimode ziyi-50/125mm okanye 62.5/125mm, kwaye i-bandwidth (umthamo wokuhanjiswa kolwazi lwefiber optical) iqhele ukuba yi-200MHz ukuya kwi-2GHz. Xa usebenzisa i-multimode optical transceiver, i-multimode optical fibers inokuhambisa imigama ukuya kwiikhilomitha ezi-5. Ukusebenzisa iidiode ezikhupha ukukhanya okanye iilaser njengemithombo yokukhanya. Umsesane wokutsala okanye umbala womzimba umnyama.
Imowudi enye SFP
Ubungakanani befiber yemowudi enye yi-9-10 / 125mm, kwaye xa kuthelekiswa nefiber multimode, ine-bandwidth engapheliyo kunye neempawu ezisezantsi zokulahleka. Ke ngoko, xa uhambisa umgama omde, ukuhanjiswa kwemowudi enye kukhethwa ngakumbi. I-transceiver ye-optical mode enye isoloko isetyenziselwa ukuhanjiswa komgama omde, ngamanye amaxesha ifikelela kwiikhilomitha ezingama-150 ukuya kuma-200. Sebenzisa i-LD okanye i-LED enemigca emxinwa ye-spectral njengomthombo wokukhanya. Umsesane wokutsala okanye umbala womzimba ubhlowu, tyheli, okanye mfusa. (Ubude bamaza obuhambelana nemibala eyahlukeneyo bucaciswe ngokucacileyo kubo.)