Isebenza njani i-SFP yemodyuli ye-transceiver yefayibha ye-optical?

1. Yintoni imodyuli ye-transceiver?

Iimodyuli ze-transceiver, njengoko igama lisitsho, zibhekisa kwicala elinye, kwaye i-SFP nayo yenye yazo. Igama elithi “transceiver” liyindibaniselwano “ye-transmitter” kunye “ne-receiver”. Ke ngoko, ingasebenza njenge-transmitter kunye ne-receiver ukuseka unxibelelwano phakathi kwezixhobo ezahlukeneyo. Okuhambelana ne-module kubizwa ngokuba sisiphelo, apho i-transceiver module inokufakwa khona. Iimodyuli ze-SFP ziya kuchazwa ngokweenkcukacha kwizahluko ezilandelayo.
1.1 Yintoni i-SFP?

I-SFP sisishunqulelo se-Small Form-factor Pluggable. I-SFP yimodyuli ye-transceiver esemgangathweni. Iimodyuli ze-SFP zinokubonelela ngoqhagamshelo lwesantya se-Gbit/s kwiinethiwekhi kwaye zixhase iifayibha ze-multimode kunye ne-singlemode. Uhlobo oluqhelekileyo lojongano yi-LC. Ngokwembonakalo, iintlobo zefayibha eziqhagamshelwayo zinokuchongwa ngombala wethebhu yokutsala ye-SFP, njengoko kubonisiwe kuMfanekiso B. Indandatho yokutsala eluhlaza okwesibhakabhaka idla ngokuthetha intambo ye-single-mode, kwaye indandatho yokutsala ithetha intambo ye-multi-mode. Kukho iintlobo ezintathu zeemodyuli ze-SFP ezahlulwe ngokwesantya sokudlulisela: i-SFP, i-SFP+, i-SFP28.
1.2 Yintoni umahluko phakathi kwe-QSFP?

I-QSFP imele "iQuad Form-factor Pluggable". I-QSFP ingabamba iitshaneli ezine ezahlukeneyo. Njenge-SFP, zombini iifayibha zemowudi enye kunye nezemowudi ezininzi zinokuqhagamshelwa. Itshaneli nganye inokudlulisa amaxabiso edatha ukuya kuthi ga kwi-1.25 Gbit/s. Ke ngoko, izinga ledatha iyonke lingafikelela kwi-4.3 Gbit/s. Xa usebenzisa iimodyuli ze-QSFP+, iitshaneli ezine nazo zingahlanganiswa. Ke ngoko, izinga ledatha lingafikelela kwi-40 Gbit/s.