Ijambo ryibanze: Fibre y'itumanaho igabanijwemo fibre imwe ya fibre hamwe na fibre ya multimode ukurikije umubare wuburyo bwo kohereza munsi yuburebure bwayo bwayo. Bitewe na diameter nini yibanze ya fibre fibre, irashobora gukoreshwa hamwe n’umucyo uhendutse. Kubwibyo, ifite intera nini ya porogaramu mugihe gito cyohererezanya ibintu, nkibigo byamakuru hamwe nimbuga zaho. Hamwe niterambere ryihuse ryubwubatsi bwikigo mumyaka yashize, fibre multimode, aribwo buryo nyamukuru bwikigo cyamakuru ndetse nakarere imiyoboro ya porogaramu, nayo yatangije mu mpeshyi, itera impungenge nyinshi.Uyu munsi, reka tuvuge kubyerekeye iterambere rya fibre ya multimode.
Ukurikije ibipimo bisanzwe ISO / IEC 11801, fibre ya multimode igabanijwemo ibyiciro bitanu byingenzi: OM1, OM2, OM3, OM4, na OM5. Inzandiko zandikirana na IEC 60792-2-10 zerekanwa mu mbonerahamwe ya 1.Muri OM1, OM2 bivuga gakondo ya 62.5 / 125mm na 50 / 125mm fibre fibre. OM3, OM4 na OM5 bivuga fibre nshya 50 / 125mm 10 ya Gigabit multimode fibre.
Ubwa mbere:gakondo ya fibre fibre
Iterambere rya fibre fibre yatangiye mu myaka ya za 1970 na 1980. Fibre yambere ya fibre yarimo ubunini bwinshi, nubwoko bune bwubunini bwashyizwe mubipimo mpuzamahanga bya komisiyo ishinzwe amashanyarazi (IEC) birimo bine. 140 mkm.Kubera ubunini bunini bwo kwambika intoki, igiciro cyo gukora ni kinini, kurwanya kugoramye ni muke, umubare wogukwirakwiza wiyongera, kandi umurongo wagabanutse. Kubwibyo, ubwoko bwibinini binini byambarwa bigenda bikurwaho buhoro buhoro, kandi ingano ebyiri nyamukuru zifata buhoro buhoro. Ni 50/125 mm na 62.5 / 125 mm, kimwe.
Mumuyoboro wambere wibanze, kugirango ugabanye ibiciro bya sisitemu yumuyoboro waho bishoboka, LED ihendutse yakoreshwaga nkisoko yumucyo. Bitewe nimbaraga nke za LED zisohoka, Inguni yo gutandukana ni nini cyane . Nyamara, diameter yibanze hamwe nububare bwimibare ya 50 / 125mm ya fibre yuburyo bwinshi ni ntoya, ntabwo ifasha guhuza neza na LED. Kubijyanye na fibre ya 62.5 / 125mm ifite fibre nini nini ya diameter nini na aperture numero, imbaraga nyinshi za optique zirashobora guhuzwa na optique ihuza. Kubwibyo rero, fibre ya 50 / 125mm ya fibre ntiyakoreshejwe cyane nka fibre ya 62.5 / 125mm mbere ya hagati ya 1990.
Hamwe n'ubwiyongere bukabije bwikwirakwizwa rya LAN, kuva mu mpera zikinyejana cya 20, LAN yatejwe imbere hejuru yikigereranyo cya lGb / s. Umuyoboro mugari wa 62.5 / 125μm fibre fibre hamwe na LED nkisoko yumucyo ntishobora gusa buhoro buhoro ibisabwa. gukwirakwiza fibre yuburyo bwinshi iragabanuka neza, kandi umurongo wiyongereye cyane. Bitewe na diameter ntoya yibanze, igiciro cyo gukora cya 50 / 125mm fibre-moderi nyinshi nacyo kiri hasi, nuko irongera gukoreshwa cyane.
IEEE 802.3z Gigabit ya Ethernet yerekana ko 50 / 125mm multimode na 62.5 / 125mm fibre fibre ishobora gukoreshwa nkibitangazamakuru byohereza kuri Gigabit Ethernet. Nyamara, kumiyoboro mishya, fibre ya 50 / 125mm ya fibre ikunzwe muri rusange.
Icya kabiri:laser yatezimbere fibre fibre
Hamwe niterambere ryikoranabuhanga, 850 nm VCSEL (Vertical Cavity Surface Emitting Laser) yagaragaye.Ibikoresho bya VCSEL bikoreshwa cyane kuko bihendutse kuruta lazeri ndende kandi birashobora kongera umuvuduko wurusobe.Icyuma cya VCSEL gikoreshwa cyane kuko gihenze kuruta kirekire- Umuhengeri wumurongo kandi urashobora kongera umuvuduko wurusobe.Kubera itandukaniro riri hagati yubwoko bubiri bwibikoresho bitanga urumuri, fibre ubwayo igomba guhinduka kugirango ihuze impinduka ziva mumucyo.
Kubikenerwa na lazeri ya VCSEL, Umuryango mpuzamahanga ushinzwe ubuziranenge / Komisiyo mpuzamahanga y’amashanyarazi (ISO / IEC) hamwe n’inganda z’itumanaho n’itumanaho (TIA) bafatanyije gutegura ibipimo bishya bya fibre fibre ifite 50mm yibanze.ISO / IEC ishyira mu gisekuru gishya. ya fibre fibre mucyiciro cya OM3 (IEC isanzwe A1a.2) murwego rwayo rushya rwa fibre fibre, ikaba ari laser-optimiz ya fibre fibre.
Fibre ya OM4 yakurikiyeho mubyukuri ni verisiyo yazamuye fibre ya OM3 ya multimode. Ugereranije na fibre ya OM3, uburinganire bwa OM4 butezimbere gusa umurongo wa fibre. (OFL) kuri 850 nm ugereranije na fibre ya OM3. Nkuko bigaragara mu mbonerahamwe ya 2 hepfo.
Hariho uburyo bwinshi bwo kwanduza muri fibre ya multimode, kandi ikibazo cyo kugoreka kunanirwa kwa fibre nacyo kizanwa. Iyo fibre yunamye, uburyo bwo murwego rwohejuru burasohoka byoroshye, bikaviramo gutakaza ibimenyetso, ni ukuvuga gutakaza igihombo cya fibre. Hamwe nimibare yiyongera yimikorere yo murugo, insinga ya fibre fibre ahantu hafunganye yashyize Imbere ibisabwa hejuru kugirango irwanye.
Bitandukanye nuburyo bworoshye bwo kwangirika bwerekana umwirondoro wa fibre imwe, umwirondoro wo kwangirika wa fibre ya multimode iraruhije cyane, bisaba uburyo bwiza cyane bwo kwangirika bwerekana igishushanyo mbonera no guhimba.Mu nzira enye zingenzi zo gutunganya ibintu byambere mpuzamahanga, gutegura neza neza fibre fibre ni plasma ya chimique yohereza ikirere (PCVD), ihagarariwe na Company ya Changfei.Iyi nzira iratandukanye nubundi buryo kuko ifite igicucu cyibice ibihumbi byinshi nubugari bwa micron 1 gusa kuri buri cyiciro mugihe kubitsa, gushoboza ultra-nziza yo kugabanya indangagaciro yo kugenzura kugenzura kugera kumurongo mwinshi.
Mugutezimbere umwirondoro wururondogoro rwa fibre fibre, fibre yunamye-itumva-multimode fibre ifite iterambere ryinshi mukurwanya kunama, nkuko bigaragara mumashusho 1 hepfo.
Igishushanyo.1 Kugereranya imikorere ya macrobend hagati ya fibre fibre idashobora kugonda hamwe na fibre isanzwe
Icya gatatu:fibre nshya ya multimode (OM5)
OM3 fibre na OM4 fibre ni fibre fibre ikoreshwa cyane mugice cya 850nm.Nkuko igipimo cyo kohereza gikomeje kwiyongera, igishushanyo mbonera cyumuyoboro umwe gusa kizavamo amafaranga menshi yo gukoresha insinga, kandi amafaranga ajyanye no gucunga no kubungabunga aziyongera uko bikwiye. .Nuko rero, abatekinisiye bagerageza kwinjiza icyerekezo cyumurongo wigice cyo guhuza ibitekerezo muri sisitemu yohereza ibintu byinshi. Niba uburebure bwinshi bwumurongo bushobora kwanduzwa kuri fibre imwe, umubare uhwanye na fibre parallel hamwe nigiciro cyo gushira no kubungabunga urashobora kugabanuka cyane.Muri urwo rwego, OM5 fibre yabayeho.
OM5 multimode fibre ishingiye kuri fibre ya OM4, yagura umuyoboro mugari kandi igashyigikira imiyoboro yoherejwe kuva 850nm ikagera kuri 950nm. SWDM4 nigice cyo kugabanya umurongo wikubye inshuro enye zigufi, arizo 850 nm, 880 nm, 910 nm, na 940 nm, Muri ubu buryo, fibre optique irashobora gushyigikira serivisi za fibre optique enye ibanziriza. SR4 kugereranya kwingenzi kwingenzi kwerekanwa kuri OM4 na OM5 fibre.
Kugeza ubu, fibre ya OM5 yakoreshejwe nkubwoko bushya bwa fibre yo mu rwego rwohejuru. Imwe mu manza nini z’ubucuruzi ni OM5 urubanza rw’ubucuruzi rwa Changfei n’ikigo cy’ibanze cya Gari ya moshi mu Bushinwa. Ikigo cy’amakuru kigamije inyungu zo gukoresha OM5 fibre muri sisitemu yo kugabana umurongo wa SR4.2. Igera ku bushobozi ntarengwa bwo gutumanaho ku giciro gito, kandi yitegura gukomeza kuzamura igipimo kiri imbere. Igipimo kizaza kiziyongera kuri 100Gb / s cyangwa 400Gb. / s, cyangwa umurongo mugari wa porogaramu, ntishobora kongera gusimbuza fibre, kugabanya cyane ibiciro byo kuzamura ejo hazaza.
Incamake: Mugihe ibyifuzo bya porogaramu bikomeje kwiyongera, fibre ya multimode iragenda igana ku gihombo gito, umurongo mwinshi, hamwe no kugwiza imirongo myinshi. Muri bo, ibishoboka byose ni fibre ya OM5, ifite imikorere myiza ya fibre ya multimode, kandi itanga igisubizo gikomeye cya fibre ya sisitemu nyinshi ya sisitemu ya 100Gb / s na 400Gb / s mugihe kizaza. Byongeye kandi, kugirango wuzuze ibisabwa byihuta, umuvuduko mwinshi, itumanaho ridahenze ryitumanaho, itumanaho rishya. fibre, nka fibre imwe ya multimode rusange-intego ya fibre, nayo iratezwa imbere.Mu bihe biri imbere, Changfei izashyira ahagaragara ibisubizo bishya bya fibre fibre hamwe nabagenzi binganda, bizana intambwe nshya nibiciro biri hasi mubigo byamakuru hamwe na fibre optique.