Kunezinhlobo eziningi zamamojula e-SFP, futhi abasebenzisi abavamile ngokuvamile abanayo indlela yokuqala lapho bekhetha amamojula e-SFP, noma ngisho bengaqondi ulwazi, bekholelwa ngokumpumputhe kumkhiqizi, okuholela ekungakwazini ukukhetha inhlanganisela yabo efanele noma engcono kakhulu. Ngezansi ukuhlukaniswa kwamamojula we-SFP kusuka emibonweni ehlukene ukukusiza ukuthi ukhethe.
Ukuhlukaniswa ngezinga lokudlulisela:
Ngokwamazinga ahlukene, kukhona i-155M, 622M, 1.25G, 2.125G, 4.25G, 8G, kanye ne-10G. Phakathi kwazo, i-155M ne-1.25G (konke ku-mbps) isetshenziswa kabanzi futhi isetshenziswa kabanzi emakethe. Ubuchwepheshe bokudlulisa be-10G buye bakhula kancane kancane, izindleko nazo ziyancipha kancane kancane, futhi isidingo sithuthuka ngendlela ekhuphukayo; Nokho, ngenxa yezinga elilinganiselwe lokungena kwenethiwekhi elitholakalayo njengamanje, izinga lokusetshenziswa lisezingeni eliphansi futhi ukukhula kuhamba kancane. Isibalo esilandelayo: Imojula ye-SFP enesivinini esingu-1.25G ne-10G
Ukuhlukaniswa kwe-wavelength
Ngokusho kwamaza ahlukene (ama-wavevel optical), kukhona i-850nm, 1310nm, 1550nm, 1490nm, 1530nm, 1610nm. Phakathi kwazo, i-module ene-wavelength ye-850nm i-multimode, enebanga lokudlulisela elingaphansi kwe-2KM (esetshenziselwa ukudluliswa kwebanga eliphakathi nelifushane, inzuzo iphansi kunezindleko zezintambo zenethiwekhi, futhi ukulahlekelwa kokudlulisela kuphansi). Imojula ene-wavelength yokudlulisela engu-1310nm kanye ne-1550nm iyimodi eyodwa, enebanga lokudlulisela elingu-2KM-20KM, elishibhile kakhulu kunamanye amaza amaza amathathu, Ngakho futhi lisetshenziswa kabanzi, ngokuvamile ukukhetha kulezi zinketho ezintathu kwanele. Amamojula anqunu (okungamamojula ajwayelekile ananoma yiluphi ulwazi) angadideka kalula ngaphandle kokuhlonza. Ngokuvamile, abakhiqizi bazohlukanisa umbala wendandatho yokudonsa, njengendandatho yokudonsa emnyama ye-multimode, enobude obungu-850nm; Okuluhlaza okwesibhakabhaka kuyimojula enobude begagasi obungu-1310nm; Okuphuzi kumelele imojuli enobude begagasi obungu-1550nm; I-Purple iyimojuli enobude begagasi obungu-1490nm.
Njengoba kuboniswe esithombeni esingenhla, imibala ehlukene ihambisana namaza ahlukene
Njengoba kukhonjisiwe esithombeni esingenhla, iyimojula ye-850nm SFP
Ukuhlukaniswa ngokusekelwe kumodi yokudlulisela
I-Multimode SFP
Mayelana nosayizi, cishe yonke imicu ye-multimode optical ingu-50/125mm noma 62.5/125mm, kanti umkhawulokudonsa (umthamo wolwazi wokudlulisa we-optical fiber) ngokuvamile ungu-200MHz ukuya ku-2GHz. Uma usebenzisa i-multimode optical transceiver, imicu ye-multimode optical ingadlulisela amabanga afinyelela kumakhilomitha angu-5. Ukusebenzisa ama-diode akhipha ukukhanya noma amalaser njengemithombo yokukhanya. Iringi yokudonsa noma umbala womzimba omnyama.
Imodi eyodwa SFP
Usayizi wefayibha yemodi eyodwa ngu-9-10/125mm, futhi uma kuqhathaniswa ne-multimode fiber, inomkhawulokudonsa ongenamkhawulo nezici zokulahlekelwa eziphansi. Ngakho-ke, lapho udlulisa amabanga amade, ukudluliswa kwemodi eyodwa kukhethwa kakhulu. I-transceiver ebonakalayo yemodi eyodwa ivamise ukusetshenziselwa ukudlulisa ibanga elide, kwesinye isikhathi ifinyelele kumakhilomitha ayi-150 kuye kwangama-200. Sebenzisa i-LD noma i-LED enemigqa emincane ye-spectral njengomthombo wokukhanya. Indandatho yokudonsa noma umbala womzimba uluhlaza okwesibhakabhaka, ophuzi, noma onsomi. (Amaza amaza ahambisana nemibala eyahlukene achazwa ngokucacile kuwo.)