Abanye abathengi abanakuqiniseka ukuba loluphi uhlobo lwefiber yemultimode ekufuneka beyikhethile. Ngezantsi zinkcukacha zeentlobo ezahlukeneyo zereferensi yakho.
Kukho iindidi ezahlukeneyo zentambo ye-fiber yeglasi ye-multimode ye-graded-index, kuquka i-OM1, i-OM2, i-OM3 kunye ne-OM4 iintambo (i-OM imele i-optical multi-mode).
I-OM1 ichaza intambo ye-62.5-micron kunye ne-OM2 ichaza i-50-micron cable. Ezi ziqhele ukusetyenziswa kwizicelo zezakhiwo zokufikelela okufutshane kwinethiwekhi ye-1Gb/s. Kodwa i-OM1 kunye ne-OM2 intambo ayifanelekanga kuthungelwano lwanamhlanje olunesantya esiphezulu.
I-OM3 kunye ne-OM4 zombini i-laser-optimized multimode fiber (LOMMF) kwaye yaphuhliswa ukuze ifake i-fiber optic networking ekhawulezayo njenge-10, i-40, kunye ne-100 Gbps. Zombini zenzelwe ukusetyenziswa kunye ne-850-nm VCSELS (i-laser-cavity surface-emitting lasers) kwaye zineeshethi ze-aqua.
I-OM3 ikhankanya i-850-nm laser-optimized 50-micron cable ene-modal bandwidth (EMB) ye-2000 MHz/km. Inokuxhasa i-10-Gbps ikhonkco lomgama ukuya kwi-300 yeemitha. I-OM4 ixela intambo yomthamo ophezulu we-850-nm laser-optimized 50-micron intambo esebenzayo ye-modal bandwidth ye-4700 MHz/km. Inokuxhasa i-10-Gbps ikhonkco lomgama weemitha ezingama-550. I-100 Gbps imigama yi-100 yeemitha kunye ne-150 yeemitha, ngokulandelanayo.
