FTTH Fibre Inzira Yumuzingi

Ikwirakwizwa rya FTTH rigabanyijemo ibyiciro bitatu: Duplex (dual fibre bidirectional dual loop) loop, Simplex (fibre fibre bidirectional) loop na Triplex (fibre fibre imwe-nzira) naONUiherezo, inzira imwe iri hepfo, kandi ikimenyetso kiva kuri OLT iherezo kugeza ONU;ubundi buryo buri hejuru, kandi ikimenyetso kiva kumurongo wa ONU kugera kumpera ya OLT.Simplex imwe-fibre loop nayo yitwa Bidirectional, cyangwa BIDI mugihe gito.Iki gisubizo gikoresha fibre imwe gusa ya optique kugirango ihuze impera ya OLT nimpera ya ONU, kandi ikoresha WDM kugirango yohereze ibimenyetso byo hejuru no kumanuka byamanuka hamwe nibimenyetso bya optique byuburebure butandukanye. Ugereranije na Duplex ya fibre fibre ebyiri, uyu muzunguruko wa fibre imwe ukoresheje kwanduza WDM urashobora gabanya ingano ya fibre ikoreshwa na kimwe cya kabiri hanyuma ugabanye igiciro cyumukoresha wa ONU.Ariko, mugihe hakoreshejwe uburyo bumwe bwa fibre, gutandukanya hamwe na kombineri bigomba gutangizwa muri module ya optique ya transceiver.Ni bigoye cyane kuruta module ya optique ya transceiver ikoresheje uburyo bwa fibre ebyiri.Ikimenyetso cya BIDI cyo hejuru gikoresha laser yoherejwe muri bande ya 1260 kugeza 1360nm, naho epfo ikoresha 1480 kugeza 1580nm.Muburyo bubiri bwa fibre, byombi hejuru no hepfo ukoreshe umurongo wa 1310nm kugirango wohereze ibimenyetso.

FTTH ifite tekinoroji ebyiri: Media Media Converter (MC) na Passive Optical Network (PON).MC ikoreshwa cyane cyane mugusimbuza insinga z'umuringa zikoreshwa mumiyoboro gakondo ya Ethernet, kandi ikemera top-point-point (P2P) topologiya yohereza serivise 100Mbps mumazu yabakoresha binyuze mumibiri ya optique.Ubwubatsi bwa PON bugamije ahanini gutandukanya optique ikimenyetso kiva kumurongo wa optique (OLT. , rero byahindutse tekinoroji igezweho ya FTTH.FTTH kuri ubu ifite ibisubizo bitatu: ingingo-ku-ngingo ya FTTH igisubizo, igisubizo cya EPON FTTH nigisubizo cya GPON FTTH.

P2P ishingiye kuri FTTH Igisubizo

P2P ni point-to-point optique fibre ihuza tekinoroji ya Ethernet.Ikoresha kandi tekinoroji ya WDM kugirango igere ku itumanaho ryibice bibiri.Ugereranije na EPON, ifite ibiranga uburyo bworoshye bwo gushyira mubikorwa ikoranabuhanga, igiciro gito kandi byoroshye kubona umubare muto wabakoresha.

Umuyoboro wa P2P FTTH wohereza umurongo wo hejuru no kumanuka wumurongo wa fibre imwe ya optique hagati ya biro nkuru yo hagati hamwe nibikoresho byabakoresha binyuze muri WDM, kandi buri mukoresha akenera fibre imwe gusa.Uburebure bwo hejuru bwumurongo ni 1310nm, naho uburebure bwumurongo wa 1550nm.Mu gukoresha ikoreshwa rya fibre optique, Ethernet yongerewe kuva mubiro bikuru kugeza kuri desktop y'abakoresha.Mugihe itanga umurongo mwinshi kandi wubukungu bwubukungu, ikuraho ingorane zo gutanga amashanyarazi no gufata neza koridoro muburyo busanzwe bwo kugera kuri Ethernet, kandi ikirinda Ingorane zo kugarura ishoramari ziterwa nigipimo gito cyo gufungura, gufungura byoroshye n'umutekano mwinshi.Mu gisubizo cya P2P, abayikoresha barashobora kwishimira umurongo wa 100M wihariye, kandi bagashyigikira byoroshye serivise nini nka videwo, videwo kubisabwa, telemedisine, hamwe n’inyigisho za kure.Mugihe ushyigikiye amakuru yihuse yimikorere, irashobora gutanga interineti ya E1 hamwe na POTS ya interineti, kugirango serivise zitandukanye zasabwaga mbere insinga zigenga zishobora gukemurwa hakoreshejwe fibre imwe.

EPON ishingiye kuri FTTH Igisubizo

EPON ifata ingingo-kuri-kugwiza imiterere hamwe nuburyo bwogukwirakwiza fibre optique.Igipimo cyo hasi gishobora kugera kuri 10Gb / s, kandi hejuru yohereza amakuru yimigezi muguturika kwa paki ya Ethernet.Mubyongeyeho, EPON itanga kandi ibikorwa bimwe na bimwe, kubungabunga no kuyobora (OAM).EPONtekinoroji ifite guhuza neza nibikoresho bihari.Ubuhanga bushya bwa serivisi nziza (QoS) butuma bishoboka kuri Ethernet gushyigikira amajwi, amakuru na serivisi zamashusho.Izi tekinoroji zirimo inkunga yuzuye-duplex, ibyihutirwa hamwe numuyoboro waho waho (VLAN).

EPON ikoresha fibre optique kugirango ihuze ibikoresho byo mu biro bikuru hamwe na ODN optique.Nyuma yo gutandukana binyuze muri optique, abakoresha bagera kuri 32 barashobora guhuzwa.Uburebure bwo hejuru bwumurongo ni 1310nm, naho uburebure bwo hasi ni 1490nm.Fibre optique iva ku cyambu cya PON ya OLT ikomatanya 1550nm igereranya cyangwa ibimenyetso bya optiki ya CATV ya optique kuri fibre optique ikoresheje multiplexer, hanyuma igahuza naONUnyuma yo gutandukana na optique coupler.ONU itandukanya ikimenyetso cya 1550nm CATV ikayihindura ikimenyetso cya radiyo ishobora kwakirwa na TV isanzwe.ONU itunganya kandi ibimenyetso byamakuru yoherejwe na OLT ikayohereza kumurongo wabakoresha. Imigaragarire yabakoresha irashobora gutanga interineti ya FE na TDM kugirango ihuze ibyifuzo byumukoresha kugirango igere kumurongo mugari, kandi irahuza nibisabwa na serivise zisanzwe za TDM.EPON ikoresha tekinoroji ya WDM kugirango imenye ingingo-kuri-kugwiza uburyo bubiri itumanaho kuri fibre optique imwe.Ifite ibiranga imiterere iboneye nigiciro gito, kandi ihuza niterambere ryiterambere rya IP-ishingiye kumurongo uzaza.Urebye ko ejo hazaza "imiyoboro itatu muri imwe" izakoresha IP nka protocole yibanze, abahanga benshi bemeza ko EPON ariwo muti mwiza wo kumenya FTTH mugihe kizaza.

GPON ishingiye kuri FTTH Igisubizo

GPONni tekinoroji igezweho yo gutangiza yatangijwe na ITU-T nyuma ya A / BPON.Muri 2001, FSAN yatangiye ikindi gikorwa gisanzwe kigamije guhuza imiyoboro ya PON (GPON) ifite umuvuduko urenze 1Gb / s.Usibye gushyigikira umuvuduko mwinshi, GPON inashyigikira serivisi nyinshi hamwe nubushobozi buhanitse, itanga imikorere myinshi ya OAM & P hamwe nubunini bwiza.Ibintu nyamukuru biranga GPON ni:

1) Shigikira serivisi zose.

2) Intera yo gukwirakwiza byibuze 20km.

3) Shyigikira ibiciro byinshi munsi ya protocole imwe.

4) Tanga imikorere ya OAM & P.

5) Ukurikije uburyo bwo gutangaza amakuru ya PON kumanuka, inzira yo kurinda umutekano kurwego rwa protocole iratangwa.

Igipimo cya GPON gitanga igipimo cyiza cyo kohereza serivisi zitandukanye, mugihe uzirikana imikorere ya OAM & P no kuzamura ubushobozi.GPON ntabwo itanga umurongo mwinshi gusa, ahubwo inashyigikira serivise zitandukanye zo kugera, cyane cyane mumibare no kohereza TDM, ishyigikira imiterere yumwimerere itabanje guhinduka. imigezi ya serivisi;Hagati aho, ikomeza imirimo myinshi muri G.983 itajyanye neza na protocole ya PON, nka OAM na DBA.