Kumanethiwekhi e-PON (Passive Optical Network), ikakhulukazi ngaphakathi kwe-topology eyinkimbinkimbi ye-PON ODN (Optical Distribution Network) point-to-multipoint, ukuqapha okusheshayo kanye nokuxilongwa kwamaphutha e-fiber kuletha izinselele ezinkulu. Nakuba ama-reflectometer e-optical time domain (OTDRs) angamathuluzi asetshenziswa kabanzi, ngezinye izikhathi awanakho ukuzwela okwanele kokuthola ukuncishiswa kwesignali kuma-fiber egatsha le-ODN noma emaphethelweni e-fiber ye-ONU. Ukufaka i-reflector ye-fiber ekhetha ubude obuphansi ohlangothini lwe-ONU kuwumkhuba ovamile ovumela ukulinganiswa okunembile kokuncishiswa kwezixhumanisi ze-optical kusukela ekuqaleni kuya ekugcineni.
Isibukisi sefayibha sisebenza ngokusebenzisa i-optical fiber grating ukuze sibonise i-OTDR test pulse emuva cishe ngo-100% reflectivity. Okwamanje, ubude obujwayelekile bokusebenza kohlelo lwe-passive optical network (PON) ludlula ku-reflector ngokuncipha okuncane ngoba alwanelisi isimo se-Bragg se-fiber grating. Umsebenzi oyinhloko wale ndlela ukubala ngokunembile inani lokulahlekelwa kokubuya komcimbi ngamunye wokubonakaliswa kokuphela kwegatsha le-ONU ngokuthola ubukhona kanye nokuqina kwesignali yokuhlola ye-OTDR ebonisiwe. Lokhu kwenza kube nokwenzeka ukunquma ukuthi isixhumanisi se-optical phakathi kwezinhlangothi ze-OLT ne-ONU sisebenza kahle yini. Ngenxa yalokho, sifinyelela ukuqapha kwangempela kwamaphuzu amaphutha kanye nokuxilongwa okusheshayo nokunembile.
Ngokusebenzisa izibonisi eziguquguqukayo ukuze kutholakale izingxenye ezahlukene ze-ODN, ukutholwa okusheshayo, ukutholakala kwendawo, kanye nokuhlaziywa kwembangela yamaphutha e-ODN kungatholakala, kuncishiswe isikhathi sokuxazulula amaphutha ngenkathi kuthuthukiswa ukusebenza kahle kokuhlola kanye nekhwalithi yokugcinwa komugqa. Esimweni esiyinhloko sokuhlukanisa, izibonisi zefayibha ezifakwe ohlangothini lwe-ONU zibonisa izinkinga lapho isibonisi segatsha sibonisa ukulahlekelwa okukhulu kokubuya uma kuqhathaniswa nesisekelo saso esinempilo. Uma wonke amagatsha efayibha ahlonyiswe ngezibonisi ekhombisa ukulahlekelwa kokubuya okukhulu ngasikhathi sinye, kubonisa iphutha kufayibha yesiqu esiyinhloko.
Esimweni sesibili sokuhlukanisa, umehluko ekulahlekelweni kokubuya ungaqhathaniswa futhi nokukhomba ngokunembile ukuthi amaphutha okunciphisa ayenzeka yini esigabeni sefayibha yokusabalalisa noma esigabeni sefayibha yokwehla. Kungakhathaliseki ukuthi kusezimweni eziyinhloko noma zesibili zokuhlukanisa, ngenxa yokwehla okungazelelwe kweziqongo zokubonakalisa ekupheleni kwejika lokuhlola le-OTDR, inani lokulahlekelwa kokubuya kwesixhumanisi segatsha eside kakhulu kunethiwekhi ye-ODN lingase lingabi nokulinganiswa ngokunembile. Ngakho-ke, izinguquko ezingeni lokubonakalisa le-reflector kumele zilinganiswe njengesisekelo sokulinganisa amaphutha nokuxilongwa.
Ama-reflector e-optical fiber nawo angafakwa ezindaweni ezidingekayo. Isibonelo, ukufaka i-FBG ngaphambi kwezindawo zokungena ze-Fiber-to-the-Home (FTTH) noma ze-Fiber-to-the-Building (FTTB), bese kuhlolwa nge-OTDR, kuvumela ukuqhathaniswa kwedatha yokuhlola nedatha eyisisekelo ukuze kutholakale amaphutha e-fiber yangaphakathi/yangaphandle noma yesakhiwo.
Ama-reflector e-fiber optic angafakwa kalula ochungechungeni ekugcineni komsebenzisi. Isikhathi sawo eside sokuphila, ukuthembeka okuzinzile, izici zokushisa ezincane, kanye nesakhiwo sokuxhumeka kwe-adaptha okulula kuphakathi kwezizathu ezenza kube ukukhetha okuhle kakhulu kwe-optical terminal yokuqapha isixhumanisi senethiwekhi ye-FTTx. I-Yiyuantong inikeza ama-reflector e-fiber optic e-FBG ngezinhlobo ezahlukene zokupakisha, kufaka phakathi ama-sleeve ozimele bepulasitiki, ama-sleeve ozimele bensimbi, kanye namafomu e-pigtail anezixhumi ze-SC noma ze-LC.
Isikhathi sokuthunyelwe: Septhemba 11-2025