Isebenza kanjani i-SFP ye-transceiver module ye-optical fiber?

1. Iyini imodyuli ye-transceiver?

Amamojula e-Transceiver, njengoba igama lisho, aqondene nezinhlangothi ezimbili, kanti i-SFP nayo ingenye yawo. Igama elithi “transceiver” liyinhlanganisela “ye-transmitter” kanye “ne-receiver”. Ngakho-ke, ingasebenza njengomthumeli kanye ne-receiver ukusungula ukuxhumana phakathi kwamadivayisi ahlukene. Okuhambisana nemojula yilokho okubizwa ngokuthi ukuphela, lapho imojula ye-transceiver ingafakwa khona. Amamojula e-SFP azochazwa ngokuningiliziwe ezahlukweni ezilandelayo.
1.1 Kuyini i-SFP?

I-SFP isifinyezo se-Small Form-factor Pluggable. I-SFP iyimojuli ye-transceiver ejwayelekile. Amamojula e-SFP anganikeza ukuxhumana kwesivinini se-Gbit/s kumanethiwekhi futhi asekele imicu ye-multimode kanye ne-singlemode. Uhlobo lwesixhumi esibonakalayo oluvame kakhulu yi-LC. Ngokubukeka, izinhlobo zefayibha ezixhunywayo zingabonakala nangombala wethebhu yokudonsa ye-SFP, njengoba kuboniswe kuMfanekiso B. Indandatho yokudonsa eluhlaza okwesibhakabhaka ivame ukusho ikhebula lemodi eyodwa, kanti indandatho yokudonsa isho ikhebula lemodi eminingi. Kunezinhlobo ezintathu zamamojula e-SFP ahlukaniswe ngokwejubane lokudlulisa: i-SFP, i-SFP+, i-SFP28.
1.2 Uyini umehluko phakathi kwe-QSFP?

I-QSFP imele ukuthi “i-Quad Form-factor Pluggable”. I-QSFP ingabamba iziteshi ezine ezihlukene. Njenge-SFP, zombili izintambo zemodi eyodwa kanye nemodi eminingi zingaxhunywa. Isiteshi ngasinye singadlulisela amazinga edatha afinyelela ku-1.25 Gbit/s. Ngakho-ke, izinga ledatha eliphelele lingafinyelela ku-4.3 Gbit/s. Uma usebenzisa amamojula e-QSFP+, iziteshi ezine nazo zingahlanganiswa. Ngakho-ke, izinga ledatha lingafinyelela ku-40 Gbit/s.