Optical access network (ndiko kuti, netiweki yofikira yokhala ndi kuwala monga sing'anga yotumizira, m'malo mwa waya wamkuwa, imagwiritsidwa ntchito kulumikiza banja lililonse. Netiweki ya Optical access).Optical access network nthawi zambiri imakhala ndi magawo atatu: optical line terminalOLT, Optical network unitONU, optical distribution networkODN,momweOLT ndiONUndi zigawo zikuluzikulu za optical access network
OLTimayimira Optical Line Terminal.OLTndi optical line terminal, ndi zida zamaofesi zamatelefoni, zomwe zimagwiritsidwa ntchito kulumikiza thunthu la optical fiber, ntchitoyo ndi yofanana ndikusinthaor rautamu chikhalidwe kulankhulana maukonde, ndi chipangizo kunja maukonde khomo ndi mkati maukonde khomo. Zoyikidwa kumapeto kwanuko, ntchito zazikuluzikulu zotsogola ndikukonza magalimoto, kuwongolera ma buffer, ndikupereka mawonekedwe owoneka bwino a fiber network komanso kugawa bandwidth. Mwachidule, ndikukwaniritsa ntchito ziwiri, kumtunda, kumaliza kumtunda kwa network ya PON; Pansi, zomwe zapezedwa zimatumizidwa kwa onseONUzida zogwiritsa ntchito kudzera pa netiweki ya ODN.
ONUndi Optical Network Unit.ONUali ndi ntchito ziwiri: kusankha kulandira kuwulutsa kotumizidwa ndiOLT, ndi kulandira yankho kuOLTngati deta ikufunika kulandiridwa; Sungani ndikusunga data ya Efaneti yomwe wogwiritsa ntchito akuyenera kutumiza, ndikutumiza zomwe zasungidwa kuOLTterminal malinga ndi zenera lotumizidwa.
Pa The FTTx network (dinani apa Kuti mudziwe mwachangu za FTTx), theONUnjira yofikira imasiyanasiyana ndi kutumizidwa kosiyana. Mwachitsanzo, Fiber To The Curb (FTTC): TheONUimayikidwa mu chipinda chapakati cha zida za cell. FTTB (Fiber Kumanga):ONUimayikidwa mu bokosi la terminal la corridor; FTTH (Fiber Kunyumba): TheONUimayikidwa mwa wogwiritsa ntchito kunyumba.
OLTndiye management terminal,ONUndiye terminal; Kutsegulidwa kwa utumiki waONUimaperekedwa kudzeraOLT, ndipo unansi wa aŵiriwo uli mbuye-kapolo. ZambiriONUikhoza kuphatikizidwa ndiOLTkudzera pa chogawanitsa.
ODN ndi Optical Distribution Network, network yogawa, njira yolumikizirana pakati pawo.OLTndiONU. Ntchito yake yayikulu ndikumaliza kutumiza kwa ma sign a bidirectional. Nthawi zambiri amapangidwa ndi kuwala kwa fiber ndi chingwe, cholumikizira kuwala, optical splitter, ndi zida zothandizira kukhazikitsa ndi kulumikiza zida izi. Chimodzi mwa zigawo zofunika kwambiri ndi optical splitter.
Zithunzi za HDVangapereke makasitomala ndi uthunthu wonse wa mankhwala FTTH ndi njira. Yakhazikitsidwa mu 2012, HDV ndi njira imodzi yokha yoperekera yankho komanso ODM & OEM wopanga maukonde ofikira ulusi. Malinga ndi zosowa za makasitomala, titha kuthandiza makasitomala kupanga ziwembu zotsika mtengo zopangira zinthu ndi zinthu makonda, ndikupereka chitsimikizo chamtundu wa ODM & OEM. Zakhala zikutsatira mzimu wa umodzi, khama, luso, luso ndi kukhulupirika, ndi luso lamphamvu la R & D ndi dongosolo langwiro loperekera, kupereka makasitomala ndi zipangizo zamakono zoyankhulirana zamtundu wa fiber ndi njira zothetsera luso, tiyeni tigwire ntchito. pamodzi, kupambana-kupambana tsogolo!