Malinga ndi miyezo ya ITU-T, ma fiber optical olankhulana amagawidwa m'magulu a 7: G.651 mpaka G.657.Kodi pali kusiyana kotani pakati pawo?
1, G.651 CHIKWANGWANI
G.651 ndi Multi-mode fiber, ndipo G.652 mpaka G.657 onse ndi ma single-mode fibers.
Ulusi wa kuwala umapangidwa ndi pachimake, zokutira ndi zokutira, monga zikuwonetsedwa pa Chithunzi 1.
Nthawi zambiri m'mimba mwake wa cladding ndi 125um, ❖ kuyanika wosanjikiza (pambuyo mitundu) ndi 250um;ndipo mainchesi apakati alibe mtengo wokhazikika, chifukwa kusiyana kwa mainchesi apakati kudzasintha magwiridwe antchito a fiber optical.
Chithunzi 1. Mapangidwe a Fiber
Nthawi zambiri makulidwe apakati a fiber multimode kuchokera ku 50um mpaka 100um.Kutumiza kwa ulusi kumakhala bwino kwambiri pamene mainchesi apakati amakhala ochepa.Monga momwe chithunzi 2 chikusonyezera.
Chithunzi 2. Kutumiza kwamitundu yambiri
Njira imodzi yokha yopatsirana pamene chigawo chapakati cha fiber ndi chocheperapo kusiyana ndi mtengo wina, monga momwe tawonetsera pa Chithunzi 3, chomwe chimakhala fiber-mode fiber.
Chithunzi 3. Kutumiza kwamtundu umodzi
2, G.652 Fiber
G.652 optical fiber ndiyo yogwiritsidwa ntchito kwambiri ndi fiber optical.Pakali pano, kuwonjezera pa chingwe cha nyumba (FTTH) chapanyumba, kuwala komwe kumagwiritsidwa ntchito pamtunda wautali ndi mzinda waukulu ndi pafupifupi G.652 optical fiber. makasitomala amayitanitsa mtundu uwu kwambiri kuchokera ku Honwy.
Attenuation ndi chimodzi mwazinthu zofunika kwambiri zomwe zimakhudza kutalika kwa kufalikira kwa fiber fiber.The attenuation coefficient of optical fiber imagwirizana ndi kutalika kwa mawonekedwe.Monga momwe tawonetsera mu Chithunzi 4. Zitha kuwoneka kuchokera ku chithunzi kuti kuchepetsedwa kwa fiber pa 1310nm ndi 1550nm ndi yaying'ono, kotero 1310nm ndi 1550nm zakhala mazenera omwe amagwiritsidwa ntchito kwambiri mazenera amtundu wamtundu umodzi.
Chithunzi 4. Attenuation coefficient of single mode fiber
3, G.653 Fiber
Pambuyo pa liwiro la machitidwe olumikizirana owoneka bwino, kufalikira kwa ma sign kumayamba kukhudzidwa ndi kufalikira kwa fiber.Dispersion imatanthawuza kusokonekera kwa ma siginecha (kukulitsa kugunda kwa mtima) komwe kumachitika chifukwa cha ma frequency osiyanasiyana kapena magawo osiyanasiyana a siginecha (kugunda) komwe kumafalikira pa liwiro losiyana ndikufikira mtunda wina, monga momwe chithunzi 5 chikusonyezera.
Chithunzi 5. Kubalalika kwa CHIKWANGWANI
Chigawo cha dispersion cha fiber optical chikugwirizananso ndi kutalika kwa mawonekedwe, monga momwe tawonetsera pa Chithunzi 6. Fiber yamtundu umodzi imakhala ndi coefficient yaing'ono yochepetsera pa 1550 nm, koma kufalikira kwa mphamvuyi ndi yaikulu.Chifukwa chake anthu adapanga ulusi wamtundu umodzi wokhala ndi coefficient yobalalika ya 0 pa 1550nm.Ulusi wowoneka bwino kwambiri ndi G.653.
Chithunzi 6. Kubalalika kokwanira kwa G.652 ndi G.653
Komabe, kufalikira kwa fiber optical ndi 0 koma sikuli koyenera kugwiritsa ntchito machitidwe a wavelength division (WDM), kotero G.653 optical fiber inachotsedwa mwamsanga.
4, G.654 Fiber
G.654 kuwala CHIKWANGWANI chimagwiritsidwa ntchito makamaka pamakina olumikizirana ma chingwe apamadzi.Kuti akwaniritse zofunikira zakutali komanso zazikulu za kulumikizana kwa chingwe chapansi pamadzi.
5, G.655 Fiber
G.653 fiber ili ndi zero dispersion pa 1550nm wavelength ndipo sagwiritsa ntchito dongosolo la WDM, kotero ulusi wokhala ndi kufalikira kochepa koma osati zero pa 1550nm wavelength unapangidwa.Ichi ndi G.655 CHIKWANGWANI.G.655 fiber yokhala ndi attenuation yaying'ono kwambiri pafupi ndi kutalika kwa 1550nm, kufalikira kochepa osati zero, ndipo ingagwiritsidwe ntchito mu machitidwe a WDM;Choncho, G.655 fiber wakhala kusankha koyamba kwa mizere ya mtunda wautali kwa zaka zoposa 20 kuzungulira 2000. Chotsitsa chochepetsera ndi kufalikira kwa fiber G.655 chikuwonetsedwa mu Chithunzi 7.
Chithunzi 7. Dispersion coefficient of G.652/G.653/G.655
Komabe, kuwala kwabwino kotereku kumayang'anizananso ndi tsiku lochotsa.Ndi kukhwima kwa teknoloji yoperekera malipiro, G.655 fiber yasinthidwa ndi G.652 fiber.Kuyambira cha 2005, mizere mtunda wautali anayamba kugwiritsa ntchito G.652 kuwala CHIKWANGWANI pamlingo waukulu.Pakalipano, G.655 optical fiber pafupifupi amagwiritsidwa ntchito pokonza mzere woyambirira wamtunda wautali.
Palinso chifukwa china chofunikira chomwe fiber G.655 imachotsedwa:
The mode field diameter muyeso wa G.655 CHIKWANGWANI ndi 8～11μm (1550nm).The mode munda awiri ulusi opangidwa ndi osiyana CHIKWANGWANI opanga akhoza kukhala ndi kusiyana kwakukulu, koma palibe kusiyana mu mtundu wa CHIKWANGWANI, ndi CHIKWANGWANI ndi kusiyana kwakukulu mu mode munda awiri olumikizidwa Nthawi zina pali attenuation lalikulu, amene amabweretsa lalikulu. kusokoneza kukonza;Choncho, mu thunthu dongosolo, owerenga adzasankha G.652 CHIKWANGWANI osati G.655, ngakhale pakufunika ndalama zambiri kubalalitsidwa chipukuta misozi.
6, G.656 Fiber
Tisanatchule G.656 kuwala kwa fiber, tiyeni tibwerere ku nthawi yomwe G.655 inkalamulira mizere yotalikirapo.
Kuchokera pamaganizo a makhalidwe ochepetsetsa, G.655 fiber ingagwiritsidwe ntchito poyankhulana mumtunda wa kutalika kuchokera ku 1460nm mpaka 1625nm (S + C + L band), koma chifukwa chogawaniza cha fiber pansi pa 1530nm ndi chochepa kwambiri, sichoncho. oyenera kugawa kwawavelength (WDM).) makina ogwiritsidwa ntchito, kotero kuti mawonekedwe amtundu wa G.655 fiber ndi 1530nm～1525nm (C+L band).
Pofuna kupanga 1460nm-1530nm wavelength range (S-band) ya fiber optical ingagwiritsidwenso ntchito poyankhulana, yesetsani kuchepetsa kufalikira kwa G.655 optical fiber, yomwe imakhala G.656 optical fiber.Coefficient yochepetsera ndi dispersion coefficient ya G.656 fiber ikuwonetsedwa pa Chithunzi 8.
Chithunzi 8
Chifukwa cha zotsatira zopanda malire za fiber optical, chiwerengero cha njira mu machitidwe a WDM aatali sichidzawonjezeka kwambiri, pamene mtengo wa zomangamanga wa metropolitan area optical fibers ndi wotsika kwambiri.Sizomveka kuwonjezera kuchuluka kwa ma tchanelo mumayendedwe a WDM.Choncho, panopa dense wavelength division (DWDM) ) Makamaka akadali 80 / 160 wave, C + L wave band ya optical fiber ndi yokwanira kukwaniritsa zofunikira.Pokhapokha ngati makina othamanga kwambiri ali ndi zofunikira zazikulu za malo otsetsereka, G.656 fiber sidzakhala ndi ntchito yaikulu.
6, G.657 Fiber
G.657 optical fiber ndi fiber optical yomwe imagwiritsidwa ntchito kwambiri kupatula G.652.Chingwe chowala chomwe chimagwiritsidwa ntchito panyumba ya FTTH chocheperako kuposa chingwe chafoni, chili ndi G.657 fiber mkati.Ngati mukufuna zambiri za izo, pls pezani https://www.gl-fiber.com/bare-optical-fiber / kapena imelo ku [email protected], Zikomo!