Kuchokera kumapeto kwa zaka za m'ma 1980, mauthenga opangidwa ndi fiber-optic anasintha pang'onopang'ono kuchoka kufupi-wavelength kupita kumtunda wautali, kuchoka ku multimode fiber kupita ku single-mode fiber. Pakali pano, single-mode CHIKWANGWANI chimagwiritsidwa ntchito mu national cable thunthu maukonde ndi chigawo thunthu line network. Multimode fiber imangokhala ndi ma LAN ena omwe ali ndi liwiro lotsika.Pakali pano, ulusi womwe anthu amalankhula umanena za ulusi wamtundu umodzi. Ulusi wamtundu umodzi uli ndi ubwino wotayika pang'ono, bandwidth yaikulu, kukweza kosavuta ndi kukulitsa, ndi mtengo wotsika, ndipo amagwiritsidwa ntchito kwambiri.
Pamene zosowa za moyo wa anthu zikupita patsogolo, intaneti imakhala gawo lofunika kwambiri la moyo.Kuti agwirizane ndi chitukuko cha zaka zambiri, teknoloji yogwirizanitsa mawaya ndi mankhwala akusinthidwa nthawi zonse, makamaka kafukufuku wamkulu ndi chitukuko cha zingwe za fiber optic. . Pali mitundu yambiri yosiyanasiyana ya zingwe za fiber optic zamitundu yosiyanasiyana ndikugwiritsa ntchito pamsika. Momwe mungasankhire mtundu wothandiza pamaso pa ulusi wambiri wa kuwala? Momwe mungasankhire zinthu zabwino kwambiri za fiber optic?
Magulu akuluakulu a fiber optic
Malinga ndi kagayidwe ka njira yopatsirana, kuwala kokhala ndi mitundu iwiri ya fiber multimode ndi single mode fiber. Multimode fiber imatha kufalitsa mitundu ingapo, pomwe ulusi wamtundu umodzi ukhoza kutumiza njira imodzi yokhayokha pamlingo womwe wapatsidwa. Ma fiber omwe amagwiritsidwa ntchito kwambiri ndi 50/125m ndi 62.5/125m. Chigawo chapakati cha fiber single mode chimakhala ndi 9/125 m. Multimode fiber-pachimake ndi chokhuthala (50 kapena 62.5m). Popeza geometry ya ulusi (makamaka mainchesi apakati d1) ndi yayikulu kwambiri kuposa kutalika kwa kuwala (pafupifupi 1 micron), pali ulusi wambiri kapena mazana. Pa nthawi yomweyi, chifukwa cha kuchulukana kwakukulu pakati pa ma modes, kufalikira kwafupipafupi kumakhala kochepa, ndipo kuwonjezeka ndi mtunda kumakhala koopsa kwambiri. Malinga ndi makhalidwe omwe ali pamwambawa, ma multimode optical fibers amagwiritsidwa ntchito kwambiri pa intaneti ndi maulendo otsika kwambiri opatsirana. ndi mtunda waufupi wotumizira, monga maukonde amdera lanu. Maukonde oterowo amakhala ndi mfundo zambiri, zolumikizira zambiri, zopindika zambiri, zolumikizira ndi zolumikizira. Chiwerengero cha zigawo, chiwerengero cha zipangizo yogwira ntchito pa unit CHIKWANGWANI kutalika, etc., ntchito multimode CHIKWANGWANI kungachepetse ndalama maukonde.
Fiber yamtundu umodzi imakhala ndi kachigawo kakang'ono (kawirikawiri pafupifupi 9 m) ndipo imatha kutumiza njira imodzi ya kuwala.Choncho, kufalikira pakati pa modes ndi kochepa kwambiri, koyenera kulankhulana kutali, komabe pali kufalikira kwa zinthu ndi kufalikira kwa waveguide, kotero. Ulusi wamtundu umodzi uli ndi zofunikira zapamwamba za kukula kwa mawonekedwe ndi kukhazikika kwa gwero la kuwala, ndiko kuti, m'lifupi mwake kuyenera kukhala kochepa, ndipo kukhazikika kuyenera kukhala kwabwino.Single-mode fiber imagwiritsidwa ntchito kwambiri pamizere yokhala ndi mtunda wautali wotumizira komanso mofanana. kufala kwambiri, monga kufala kwa thunthu lautali, kumanga maukonde a metropolitan area, etc. Ma network apano a FTTx ndi HFC amakhala makamaka ma single-mode fibers.
Kusiyana pakati pa single mode fiber transceivers ndi multimode fiber transceivers
Fiber optic transceiver ndi Ethernet transmission medium conversion device yomwe imasinthanitsa ma siginecha amagetsi ndi kuwala a Efaneti, ndipo ulusi wowona womwe umatumiza deta pa netiweki umagawidwa kukhala ulusi wa multimode ndi single mode fibers. imafalikira mtunda wautali, itha kugwiritsidwa ntchito polumikizana mkati mwa nyumba komanso pakati pa nyumba. Komabe, chifukwa ulusi wa multimode ndi ma transceiver ofananira nawo ndizotsika mtengo, zikadali mkati mwamitundu ina. Masukulu ambiri amagwiritsanso ntchito ma multimode fiber akamanga ma network amkati.
Ndi kupita patsogolo kwaukadaulo, ulusi wa single-mode udayamba kulowa maukonde akutali (kuchokera makilomita angapo mpaka makilomita opitilira zana), ndipo kukwera kwachitukuko kumathamanga kwambiri, m'zaka zingapo, kuchokera pamapulogalamu apamwamba mpaka nyumba za anthu wamba, Mwachitsanzo, nyumba zambiri tsopano ntchito transceivers kuwala (otchedwa FTTH mode, CHIKWANGWANI-kwa-nyumba) akatsegula maukonde. Kugwiritsiridwa ntchito kwa ma transceivers optical kwakhala njira yodziwika kwambiri ya mautumiki owonjezera pawailesi ndi wailesi yakanema.
Kugwiritsa ntchito ma transceivers a fiber optic pamaneti, zabwino zake sizokhazikika, koma ndi chiyani china? Ndi liwiro! 100M zonse duplex, liwiro ngakhale apamwamba kuposa 100 zonse duplex: 1000M zonse duplex.
Imakulitsa malire a mtunda wotumizira ma netiweki kuchokera ku 100M mpaka kupitilira 100KM kwa awiri opotoka, omwe amatha kuzindikira mosavuta kulumikizana pakati pa seva ya boardboard, obwereza, hub, terminal ndi terminal. Posankha maukonde a fiber-optic, tidzalimbitsa kumvetsetsa kwa fiber optical, kufalitsa chidziwitso chofunikira, ndikusankha ulusi wochita bwino kwambiri poganizira mozama.