Nkuko twese tubizi, fibre ya multimode isanzwe igabanijwemo OM1, OM2, OM3 na OM4.Noneho bite bya fibre yuburyo bumwe?Mubyukuri, ubwoko bwa fibre yuburyo bumwe bisa nkibigoye cyane kuruta fibre fibre.Hariho amasoko abiri yibanze yo kwerekana uburyo bumwe bwa optique fibre.Imwe murukurikirane rwa ITU-T G.65x, indi ni IEC 60793-2-50 (yatangajwe nka BS EN 60793-2-50).Aho kwerekeza ku magambo yombi ITU-T na IEC, nzakomeza gusa kuri ITU-T G.65x yoroshye muriyi ngingo.Hano hari uburyo 19 butandukanye bwa optique fibre idasanzwe isobanurwa na ITU-T.
Buri bwoko bufite aho bugarukira kandi ubwihindurize bwibisobanuro bya fibre optique byerekana ubwihindurize bwa tekinoroji ya sisitemu yoherejwe kuva kera hashyizweho uburyo bumwe bwa optique fibre kugeza uyu munsi.Guhitamo igikwiye kumushinga wawe birashobora kuba ingenzi mubikorwa, ikiguzi, kwiringirwa n'umutekano.Muri iyi nyandiko, ndashobora gusobanura bike kubijyanye no gutandukanya ibisobanuro bya G.65x yuruhererekane rwuburyo bumwe optique ya fibre fibre.Twizere kugufasha gufata icyemezo gikwiye.
G.652
Fibre ya ITU-T G.652 izwi kandi nka SMF isanzwe (fibre imwe ya fibre) kandi niyo fibre ikunze gukoreshwa.Iza muburyo bune (A, B, C, D).A na B bafite impinga y'amazi.C na D bikuraho impinga y'amazi kugirango ikore neza.Fibre ya G.652.A na G.652.B yashizweho kugirango igire uburebure bwa zeru-zero hafi ya 1310 nm, kubwibyo byateganijwe kugirango bikore mumatsinda ya 1310-nm.Barashobora kandi gukorera mumatsinda ya 1550-nm, ariko ntabwo ari byiza kuri kano karere kubera gutatana kwinshi.Izi fibre optique ikoreshwa muri LAN, MAN no kugera kuri sisitemu y'urusobe.Impinduka ziheruka (G.652.C na G.652.D) zigaragaza impinga y'amazi yagabanutse ibemerera gukoreshwa mukarere k'umuraba uri hagati ya 1310 nm na 1550 nm ishyigikira ikwirakwizwa rya Coarse Wavelength Division Multiplexed (CWDM).
G.653
G.653 uburyo bumwe bwa fibre yakozwe kugirango ikemure ayo makimbirane hagati yumurongo mwiza wumurongo umwe nigihombo gito kurindi.Ikoresha imiterere igoye mukarere kibanze hamwe nigice gito cyane, kandi uburebure bwumurongo wa zero chromatic dispersion bwimuriwe kuri nm 1550 kugirango bihure nigihombo gito muri fibre.Kubwibyo, fibre ya G.653 nayo yitwa fibre dispersion-shift fibre (DSF).G.653 ifite igabanuka ryibanze ryibanze, ryatezimbere uburyo burebure bwogukoresha uburyo bumwe bwogukoresha hakoreshejwe erbium-dope fibre amplifier (EDFA).Nyamara, imbaraga zayo nyinshi murwego rwa fibre irashobora kubyara ingaruka zitari umurongo.Imwe mungorane nyinshi, kuvanga imiraba ine (FWM), iboneka muri sisitemu ya Dense Wavelength Division Multiplexed (CWDM) hamwe na zeru ya chromatic ikwirakwizwa, bitera kwambukiranya imipaka no kwivanga hagati yimiyoboro.
G.654
Ibisobanuro bya G.654 byiswe "ibiranga guhagarikwa kwimurwa uburyo bumwe bwa optique fibre na kabel."Ikoresha ubunini bunini bukozwe muri silika isukuye kugirango igere kumikorere miremire-ndende hamwe na attenuation nkeya mumurongo wa 1550-nm.Ubusanzwe ifite kandi chromatic ikwirakwizwa kuri 1550 nm, ariko ntabwo yagenewe gukora kuri 1310 nm na gato.Fibre ya G.654 irashobora gukoresha ingufu zingana hagati ya 1500 nm na 1600 nm, igenewe ahanini kwaguka igihe kirekire.
G.655
G.655 izwi nka fibre itari zeru ikwirakwizwa (NZDSF).Ifite umubare muto, ugenzurwa na chromatic ikwirakwizwa muri C-band (1530-1560 nm), aho amplifier ikora neza, kandi ifite ubuso bunini kuruta fibre G.653.Fibre ya NZDSF itsinze ibibazo bifitanye isano no kuvanga imiraba ine nizindi ngaruka zidafite umurongo wimura uburebure bwa zeru-dispersion hanze ya 1550-nm ikora.Hariho ubwoko bubiri bwa NZDSF, buzwi nka (-D) NZDSF na (+ D) NZDSF.Bafite icyerekezo cyiza kandi cyiza nuburebure bwumurongo.Ishusho ikurikira irerekana imiterere yo gutandukanya ubwoko bune bwingenzi bwa fibre.Ubusanzwe chromatic ikwirakwiza fibre ya G.652 yujuje ni 17ps / nm / km.G.655 fibre yakoreshejwe cyane cyane mugushigikira sisitemu ndende ikoresha itumanaho rya DWDM.
G.656
Nka fibre ikora neza murwego rwuburebure, bimwe byashizweho kugirango bikore neza kumurongo wihariye.Iyi ni G.656, nayo yitwa Fibre Medium Dispersion Fiber (MDF).Yashizweho kugirango igere hafi kandi fibre ndende ikora neza kuri 1460 nm na 1625 nm.Ubu bwoko bwa fibre bwakozwe kugirango bushyigikire sisitemu ndende ikoresha CWDM na DWDM yoherejwe hejuru yumurongo wateganijwe.Kandi icyarimwe, itanga uburyo bworoshye bwo kohereza CWDM mumujyi wa metropolitani, no kongera ubushobozi bwa fibre muri sisitemu ya DWDM.
G.657
G.657 fibre optique igenewe guhuzwa na fibre optique ya G.652 ariko ikagira imikorere itandukanye yo kugorora.Yashizweho kugirango yemere fibre kunama, bitagize ingaruka kumikorere.Ibi bigerwaho hifashishijwe umuyoboro wa optique ugaragaza urumuri rwazimiye rugasubira mu nsi, aho gutakara mu mwenda, bigatuma fibre ihindagurika cyane.Nkuko twese tubizi, mumashanyarazi ya kabili hamwe ninganda za FTTH, biragoye kugenzura radiyo yunamye mumurima.G.657 nibisanzwe bigezweho kubikorwa bya FTTH, kandi, hamwe na G.652 nibisanzwe bikoreshwa mumashanyarazi ya nyuma ya fibre.
Duhereye ku gice kiri hejuru, tuzi ko ubwoko butandukanye bwa fibre imwe ya fibre ifite porogaramu zitandukanye.Kubera ko G.657 ihujwe na G.652, abategura nabashiraho mubisanzwe birashoboka ko bazahura nabo.Mubyukuri, G657 ifite radiyo nini igoramye kuruta G.652, ikwiriye cyane cyane kubikorwa bya FTTH.Kandi kubera ibibazo bya G.643 bikoreshwa muri sisitemu ya WDM, ubu ntibikunze koherezwa, bisimburwa na G.655.G.654 ikoreshwa cyane mubisabwa munsi yinyanja.Ukurikije iki gice, ndizera ko ufite gusobanukirwa neza kuri fibre yuburyo bumwe, ishobora kugufasha gufata icyemezo cyiza.
Igihe cyo kohereza: Nzeri-03-2021