Bareki ba bang ha ba khone ho etsa bonnete ba hore na ba lokela ho khetha mofuta ofe oa fiber ea multimode. Ka tlase ke lintlha tsa mefuta e fapaneng bakeng sa referense ea hau.
Ho na le mekhahlelo e fapaneng ea thapo ea fiber ea khalase ea multimode e kentsoeng, ho kenyeletsoa likhoele tsa OM1, OM2, OM3 le OM4 (OM e emetse optical multi-mode).
OM1 e bolela thapo ea 62.5-micron 'me OM2 e bolela thapo ea 50-micron. Tsena li sebelisoa hangata lits'ebetsong tsa meaho bakeng sa marang-rang a fihlellehang a 1Gb/s. Empa thapo ea OM1 le OM2 ha e ea lokela marang-rang a kajeno a lebelo le holimo.
OM3 le OM4 ka bobeli ke laser-optimized multimode fiber (LOMMF) 'me li ile tsa ntlafatsoa ho amohela marang-rang a fiber optic a potlakileng joalo ka 10, 40, le 100 Gbps. Ka bobeli li etselitsoe hore li sebelisoe ka 850-nm VCSELS (li-laser tsa vertical-cavity surface-emitting lasers) 'me li na le li-aqua sheaths.
OM3 e bolela thapo ya 850-nm ya laser-optimized 50-micron e nang le modal bandwidth (EMB) e sebetsang ya 2000 MHz/km. E ka ts'ehetsa likhokahano tsa 10-Gbps ho fihla ho limithara tse 300. OM4 e totobatsa thapo e phahameng ea bandwidth ea 850-nm laser-optimized 50-micron bandwidth e sebetsang hantle ea modal bandwidth ea 4700 MHz/km. E ka ts'ehetsa likhokahano tsa 10-Gbps tsa sebaka sa limithara tse 550. Bohole ba 100 Gbps ke limithara tse 100 le limithara tse 150, ka ho latellana.
