“OM” mu itumanaho rya optique bivuga “Optical Multi-mode”.Uburyo bwiza, nibisanzwe kuri fibre fibre yerekana urwego rwa fibre.Kugeza ubu, TIA na IEC basobanuye ibipimo bya fibre patch ni OM1, OM2, OM3, OM4, na OM5.
Mbere ya byose, multimode nuburyo bumwe ni ubuhe?
Fibre imwe imwe ni fibre optique itanga uburyo bumwe bwo kohereza.Diameter yibanze igera kuri 8 kugeza kuri 9 mm na diametre yo hanze igera kuri mkm 125.Ubwoko bumwe bwa fibre ishyigikira intera ndende kuruta fibre fibre.Muri 100Mbps Ethernet kugeza 1G Gigabit, fibre imwe-imwe irashobora gushyigikira intera irenga 5000m.Fibre ya fibre ikwiranye gusa nintera ngufi na ngufi hamwe na sisitemu ntoya ya fibre optique.
Nikini tatandukanya OM1, OM2, OM3, OM4, OM5?
Muri rusange, OM1 isanzwe 62.5 / 125um.OM2 isanzwe 50 / 125um;OM3 ni 850nm laser-optimiz 50um yibanze ya fibre fibre.Muri 10Gb / s Ethernet hamwe na 850nm VCSEL, intera yohereza fibre irashobora kugera kuri 300m.OM4 ni verisiyo ya OM3 yazamuye.OM4 fibre fibre itunganya uburyo butandukanye bwo gutinda (DMD) byakozwe na OM3 fibre fibre mugihe cyohereza byihuse.Kubwibyo, intera yoherejwe iratera imbere cyane, kandi intera yohereza fibre irashobora kugera kuri 550m.Umugozi wa OM5 fibre ni urwego rushya rwimigozi ya fibre yasobanuwe na TIA na IEC hamwe na diameter ya fibre ya 50/125 mm.Ugereranije na OM3 na OM4 fibre yamashanyarazi, imigozi ya OM5 fibre yamashanyarazi irashobora gukoreshwa mugukoresha umurongo mugari.Umuyoboro mugari nintera ntarengwa biratandukanye iyo byoherejwe mubyiciro bitandukanye.
Umugozi wa fibre ya OM5 ni iki?
Azwi nka Wideband Multimode Fibre Patch Cable (WBMMF), fibre ya OM5 ni laser-optimizme ya fibre fibre (MMF) yagenewe kwerekana ibimenyetso byerekana umurongo mugari wo kugabana umurongo (WDM).Uburyo bushya bwo gushyiramo fibre bwateguwe kugirango bushyigikire uburebure butandukanye bwa "bugufi" buri hagati ya 850 nm na 950 nm, bukwiranye nubushakashatsi bwihuse nyuma ya polymerisiyasi.OM3 na OM4 byateguwe cyane cyane kugirango bishyigikire umurongo umwe wa 850 nm.
Ni irihe tandukaniro riri hagati ya OM3 na OM4?
1.Ibara ry'ikoti ritandukanye
Kugirango utandukanye hagati ya fibre isimbuka, hakoreshwa amabara atandukanye yicyatsi cyo hanze.Kubikoresho bitari ibya gisirikare, fibre yuburyo bumwe mubisanzwe ikoti yumuhondo.Muri fibre fibre, OM1 na OM2 ni orange, OM3 na OM4 nubururu bwamazi, naho OM5 nicyatsi kibisi.
2.Urwego rutandukanye rwo gusaba
OM1 na OM2 byoherejwe cyane mu nyubako imyaka myinshi, bishyigikira itumanaho rya Ethernet kugeza kuri 1GB.OM3 na OM4 fibre optique ya fibre optique ikoreshwa mubisanzwe muri data center cabling ibidukikije kugirango ishyigikire 10G cyangwa ndetse na 40 / 100G yihuta ya Ethernet. 40Gb / s na 100Gb / s yohereza, OM5 igabanya umubare wa fibre zishobora kwanduzwa ku muvuduko mwinshi.
OM5 ya fibre fibre ibiranga
1. Fibre nkeya ishyigikira umurongo mugari wa porogaramu
Umugozi wa OM5 fibre patch ifite uburebure bwa 850/1300 nm kandi irashobora gushigikira byibuze uburebure bwa 4.Ubusanzwe imikorere yumurongo wa OM3 na OM4 ni 850 nm na 1300 nm.Nukuvuga ko, fibre gakondo ya OM1, OM2, OM3, na OM4 ifite umuyoboro umwe gusa, mugihe OM5 ifite imiyoboro ine, kandi ubushobozi bwo kohereza bwiyongereyeho inshuro enye. Guhuza ibice bigufi-bigabanya kugabana (SWDM) hamwe na parallel tekinoroji yohereza, OM5 isaba gusa 8-nini ya Broadband multimode fibre (WBMMF), ishobora gushyigikira porogaramu ya Ethernet 200 / 400G, bikagabanya cyane umubare wa fibre.Ku rugero ruto, ibiciro byinsinga byurusobe biragabanuka.
2. Intera yoherejwe kure
Intera yoherejwe ya fibre ya OM5 ni ndende kuruta OM3 na OM4.Fibre ya OM4 yagenewe gushyigikira uburebure byibura metero 100 hamwe na 100G-SWDM4 transceiver.Ariko fibre ya OM5 irashobora gushigikira metero 150 z'uburebure hamwe na transceiver imwe.
3. Gutakaza fibre nkeya
Kwiyongera k'umugozi mugari wa OM5 wagabanutse kuva kuri 3.5 dB / km kuri OM3 yabanjirije, umugozi wa OM4 ukagera kuri 3.0 dB / km, kandi umurongo wa interineti kuri 953 nm wariyongereye.
OM5 ifite ubunini bwa fibre imwe na OM3 na OM4, bivuze ko ihuza rwose na OM3 na OM4.Ntibikenewe ko bihinduka muri progaramu isanzwe yo gukoresha OM5.
OM5 fibre nini cyane kandi yoroheje, ituma umuyoboro wihuta wogukwirakwiza hamwe na fibre nkeya ya fibre fibre, mugihe ikiguzi nogukoresha ingufu biri munsi cyane ya fibre imwe ya fibre.Niyo mpamvu, ejo hazaza hazakoreshwa cyane muri 100G / 400G / 1T amakuru manini cyane ibigo.