Pali mitundu yambiri ya ma module a SFP, ndipo ogwiritsa ntchito wamba nthawi zambiri alibe njira yoyambira posankha ma module a SFP, kapena samamvetsetsa chidziwitsocho, akukhulupirira mwachimbulimbuli wopanga, zomwe zimapangitsa kuti asathe kusankha okha oyenera kapena ophatikiza bwino. Pansipa pali gulu la ma module a SFP kuchokera kumawonekedwe osiyanasiyana kuti akuthandizeni kusankha.
Gulu potengera kuchuluka kwa kufalitsa:
Malinga ndi mitengo yosiyanasiyana, pali 155M, 622M, 1.25G, 2.125G, 4.25G, 8G, ndi 10G. Pakati pawo, 155M ndi 1.25G (onse mu mbps) amagwiritsidwa ntchito kwambiri ndipo amagwiritsidwa ntchito kwambiri pamsika. Tekinoloje yotumizira ya 10G yakula pang'onopang'ono, mtengowo umachepanso pang'onopang'ono, ndipo kufunikira kukukulirakulira; Komabe, chifukwa cha kuchepa kwapaintaneti komwe kulipo pakali pano, kuchuluka kwa ogwiritsa ntchito kumakhala kotsika kwambiri ndipo kukula kumachepera. Chithunzi chotsatira: SFP module yokhala ndi 1.25G ndi 10G liwiro
Gulu la Wavelength
Malinga ndi mafunde osiyanasiyana (optical wavelengths), pali 850nm, 1310nm, 1550nm, 1490nm, 1530nm, 1610nm. Pakati pawo, gawo ndi wavelength 850nm ndi multimode, ndi kufala mtunda zosakwana 2KM (ntchito kufala sing'anga ndi lalifupi mtunda, ubwino ndi wotsika kuposa mtengo wa zingwe maukonde, ndi imfa kufala ndi m'munsi). The gawo ndi kufala wavelength wa 1310nm ndi 1550nm mode limodzi, ndi kufala mtunda wa 2KM-20KM, amene ndi otsika mtengo kuposa ena mafunde atatu, Choncho amagwiritsidwanso ntchito kwambiri, zambiri kusankha njira zitatu ndi zokwanira. Ma module amaliseche (omwe ali ma modules omwe ali ndi chidziwitso chilichonse) akhoza kusokonezeka mosavuta popanda chizindikiritso. Nthawi zambiri, opanga amasiyanitsa mtundu wa mphete yokoka, monga mphete yakuda yokoka ya multimode, yokhala ndi kutalika kwa 850nm; Buluu ndi gawo lomwe lili ndi kutalika kwa 1310nm; Yellow imayimira gawo lomwe lili ndi kutalika kwa 1550nm; Purple ndi gawo lokhala ndi kutalika kwa 1490nm.
Monga momwe tawonetsera pamwambapa, mitundu yosiyanasiyana imagwirizana ndi mafunde osiyanasiyana
Monga momwe tawonera pamwambapa, ndi gawo la 850nm SFP
Gulu kutengera kufala mode
Multimode SFP
Pankhani ya kukula, pafupifupi ma multimode kuwala ulusi ndi 50/125mm kapena 62.5/125mm, ndi bandiwifi (chidziwitso kufala mphamvu ya kuwala CHIKWANGWANI) zambiri 200MHz kuti 2GHz. Mukamagwiritsa ntchito transceiver ya multimode Optical, ma multimode optical fibers amatha kutumiza mtunda wa makilomita 5. Kugwiritsa ntchito ma diode otulutsa kuwala kapena ma lasers ngati magwero owunikira. Chikoka kapena mtundu wa thupi ndi wakuda.
Single mode SFP
Kukula kwa single mode fiber ndi 9-10 / 125mm, ndipo poyerekeza ndi multimode fiber, ili ndi bandwidth yopanda malire komanso kutsika kochepa. Chifukwa chake, potumiza maulendo ataliatali, kufala kwa single mode ndikobwino kwambiri. Single mode Optical transceiver nthawi zambiri imagwiritsidwa ntchito potumiza mtunda wautali, nthawi zina mpaka 150 mpaka 200 kilomita. Gwiritsani ntchito LD kapena LED yokhala ndi mizere yopapatiza ngati gwero la kuwala. Mtundu wa mphete kapena thupi ndi wabuluu, wachikasu, kapena wofiirira. (Mafunde omwe amafanana ndi mitundu yosiyanasiyana amafotokozedwa momveka bwino pa iwo.)