I-“OM” ekuxhumaneni kwamehlo ibhekisela “kumodi ye-Optical Multi-Mode”.Imodi ye-Optical, okuyindinganiso yefayibha ye-multimode ukukhombisa izinga lefiber.Okwamanje, i-TIA ne-IEC echazwe amazinga entambo ye-fiber patch yi-OM1, OM2, OM3, OM4, kanye ne-OM5.
Okokuqala, yini i-multimode nemodi eyodwa?
I-Single Mode Fiber iyi-fiber optical evumela imodi eyodwa kuphela yokudlulisela.Ububanzi bomnyombo bungaba ngu-8 kuya ku-9 μm kanti ububanzi bangaphandle bungaba ngu-125 μm. I-Multimode Optical Fiber ivumela izindlela ezahlukene zokukhanya ukuthi zidluliselwe phezu kwefayibha eyodwa enobubanzi obuyingqikithi obungu-50 μm no-62.5 μm.Ifayibha yemodi eyodwa isekela amabanga amade okudlulisela kune-multimode fiber.Ku-100Mbps Ethernet kuya ku-1G Gigabit, i-fiber yemodi eyodwa ingasekela amabanga okudlulisela angaphezu kuka-5000m.I-Multimode fiber ifaneleka kuphela ebangeni eliphakathi nelifushane kanye nezinhlelo zokuxhumana ezincane ze-fiber optic.
Iniyizo tyena umehluko phakathi kwe-OM1, OM2, OM3, OM4, OM5?
Ngokuvamile, i-OM1 ivamile 62.5/125um.OM2 ivamile 50/125um;I-OM3 yi-850nm laser-optimized 50um core multimode fiber.Ku-10Gb/s Ethernet ene-850nm VCSEL, ibanga lokudluliswa kwefayibha lingafinyelela ku-300m.OM4 inguqulo ethuthukisiwe ye-OM3.I-OM4 multimode fiber ilungiselela ukubambezeleka kwemodi yokuhlukanisa (i-DMD) ekhiqizwe i-OM3 multimode fiber ngesikhathi sokudlulisa ngesivinini esikhulu.Ngakho-ke, ibanga lokudlulisela lithuthukiswa kakhulu, futhi ibanga lokudluliswa kwefayibha lingafinyelela ku-550m.Intambo ye-fiber patch ye-OM5 iyindinganiso entsha yezintambo ze-fiber patch echazwe yi-TIA ne-IEC enobubanzi befiber obungu-50/125 μm.Uma kuqhathaniswa ne-OM3 ne-OM4 fiber patch cords, izintambo ze-OM5 fibre patch zingasetshenziswa ezinhlelweni zokusebenza zomkhawulokudonsa.
Iyini intambo ye-OM5 fiber patch?
Yaziwa njenge-Wideband Multimode Fiber Patch Cable (WBMMF), i-OM5 fibre iyi-laser-optimized multimode fiber (MMF) eklanyelwe ukucacisa izici zomkhawulokudonsa we-wavelength division multiplexing (WDM).Indlela entsha yokuhlukanisa i-fibre yenzelwe ukusekela izinhlobonhlobo zamaza amaza "amafushane" phakathi kuka-850 nm no-950 nm, afanele ukusetshenziswa komkhawulokudonsa ophezulu ngemva kokwenziwa kwe-polymerization.I-OM3 ne-OM4 yakhelwe ngokuyinhloko ukusekela ubude begagasi obubodwa obungu-850 nm.
Uyini umehluko phakathi kwe-OM3 ne-OM4?
1.Umbala wejazi ohlukile
Ukuze uhlukanise phakathi kwe-fiber jumpers ehlukene, kusetshenziswa imibala ehlukene ye-sheath yangaphandle.Kuzinhlelo zokusebenza ezingezona ezezempi, i-fiber yemodi eyodwa ngokuvamile iyijakhethi yangaphandle ephuzi.Ku-multimode fiber, i-OM1 ne-OM2 anombala osawolintshi, i-OM3 ne-OM4 aluhlaza sasibhakabhaka, kanti i-OM5 iluhlaza samanzi.
2.Uhlelo lokusebenza oluhlukile
I-OM1 ne-OM2 zisetshenziswe kabanzi ezakhiweni iminyaka eminingi, zisekela ukuthunyelwa kwe-Ethernet kuze kufike ku-1GB.OM3 kanye nezintambo ze-fiber optic ze-OM4 zivame ukusetshenziswa ezindaweni zekhebula zesikhungo sedatha ukusekela i-10G noma ngisho ne-40/100G izindlela ze-Ethernet ezinesivinini esikhulu. I-40Gb / s kanye nokudluliselwa kwe-100Gb / s, i-OM5 inciphisa inani lemicu engadluliswa ngesivinini esikhulu.
Izici ze-OM5 multimode fiber
1. Amafayibha ambalwa asekela izinhlelo zokusebenza zomkhawulokudonsa ophezulu
Intambo ye-fiber patch ye-OM5 inobude begagasi obusebenzayo obungu-850/1300 nm futhi ingasekela okungenani amaza amaza ama-4.Amaza okusebenza ajwayelekile e-OM3 ne-OM4 angama-850 nm no-1300 nm.Okusho ukuthi, i-OM1 yendabuko, i-OM2, i-OM3, ne-OM4 izintambo ze-multimode zinesiteshi esisodwa kuphela, kuyilapho i-OM5 ineziteshi ezine, futhi umthamo wokudlulisela ukhuphuka izikhathi ezine.Ukuhlanganisa i-multi-wavelength division multiplexing (SWDM) kanye nokuhambisana ubuchwepheshe bokudlulisa, i-OM5 idinga kuphela i-8-core wideband multimode fiber (WBMMF), engasekela izinhlelo zokusebenza ze-Ethernet ze-200 / 400G, ukunciphisa kakhulu inani le-fiber cores.Ngokwezinga elincane, izindleko zezintambo zenethiwekhi ziyancipha.
2.Farther transmission distance
Ibanga lokudlulisela le-OM5 fiber lide kunalelo le-OM3 ne-OM4.I-OM4 fiber yakhelwe ukusekela ubude okungenani bamamitha ayi-100 nge-transceiver engu-100G-SWDM4.Kodwa i-OM5 fiber ingakwazi ukusekela amamitha angu-150 ubude nge-transceiver efanayo.
3.Lower fiber ukulahlekelwa
Ukuncishiswa kwentambo ye-multimode ye-Broadband ye-OM5 yehlisiwe isuka ku-3.5 dB/km ku-OM3 yangaphambilini, ikhebula ye-OM4 yaya ku-3.0 dB/km, futhi isidingo somkhawulokudonsa ku-953 nm sinyusiwe.
I-OM5 inosayizi wefayibha ofanayo njengo-OM3 no-OM4, okusho ukuthi ihambisana ngokugcwele ne-OM3 ne-OM4.Ayidingi ukushintshwa kuhlelo lokusebenza lwezintambo olukhona lwe-OM5.
I-OM5 fibre iyathandeka kakhulu futhi iyavumelana nezimo, inika amandla ukudluliswa kwenethiwekhi ngesivinini esiphezulu nge-fiber cores ye-multimode embalwa, kuyilapho izindleko kanye nokusetshenziswa kwamandla kuphansi kakhulu kune-fiber yemodi eyodwa.Ngakho-ke, ikusasa lizosetshenziswa kabanzi ku-100G/400G/1T idatha enkulu kakhulu izikhungo.