Kumanethiwekhi e-PON (Passive Optical Network), ikakhulukazi ngaphakathi kwe-Pon ODN (Optical Distribution Network) eyinkimbinkimbi ye-point-to-multipoint, ukuqapha okusheshayo nokuxilongwa kwamaphutha e-fiber kuveza izinselele ezinkulu. Nakuba i-optical time domain reflectometers (OTDRs) ingamathuluzi asetshenziswa kabanzi, ngezinye izikhathi ayinakho ukuzwela okwanele kokubona ukuncishiswa kwesignali kumafayibha egatsha e-ODN noma ekugcineni kwefayibha ye-ONU. Ukufaka isibonisi sefayibha ekhethiwe ebiza kancane ye-wavelength ohlangothini lwe-ONU kuwumkhuba ovamile ovumela ukukala okunembile kokuphela kuya ekupheleni kwezixhumanisi ezibonakalayo.
I-fiber reflector isebenza ngokusebenzisa i-optical fibre grating ukukhombisa i-OTDR test pulse back with almost 100% reflectivity. Ngaleso sikhathi, ubude begagasi obujwayelekile bokusebenza besistimu ye-passive optical network (PON) budlula kusibonisi ngokuncishiswa okuncane ngoba awanelisi isimo se-Bragg se-fiber grating. Umsebenzi oyinhloko wale ndlela yokubala ngokunembile inani lokulahlekelwa kwembuyiselo yomcimbi wokuboniswa kwegatsha ngalinye le-ONU ngokuthola ubukhona nobukhulu besiginali yokuhlola ye-OTDR ebonisiwe. Lokhu kunika amandla ukunqunywa kokuthi isixhumanisi sokubonwayo phakathi kwezinhlangothi ze-OLT ne-ONU sisebenza ngokujwayelekile yini. Ngenxa yalokho, ifinyelela ukuqapha kwesikhathi sangempela kwamaphuzu amaphutha kanye nokuxilonga okusheshayo, okunembile.
Ngokuthumela izibonisi eziguquguqukayo ukuze zihlonze izingxenye ezihlukene ze-ODN, ukutholwa okusheshayo, ukwenziwa kwasendaweni, kanye nokuhlaziywa kwembangela yamaphutha e-ODN kungafinyelelwa, kuncishiswe isikhathi sokuxazulula amaphutha kuyilapho kuthuthukisa ukusebenza kahle kokuhlola kanye nekhwalithi yokulungisa umugqa. Esimeni sokuhlukanisa esiyinhloko, izibonisi zefiber ezifakwe ohlangothini lwe-ONU zibonisa izinkinga lapho isibonisi segatsha sibonisa ukulahlekelwa kwembuyiselo okwenyuka kakhulu uma kuqhathaniswa nesisekelo saso esinempilo. Uma wonke amagatsha efayibha afakwe izibonisi ngesikhathi esisodwa ebonisa ukulahlekelwa okuphindiwe, lokho kubonisa iphutha ku-trunk fiber enkulu.
Esimeni se-splitter yesibili, umehluko ekulahlekeni kwembuyiselo ungaphinda uqhathaniswe nokukhomba ngokunembile ukuthi amaphutha okunciphisa ayenzeka yini kungxenye yefayibha yokusabalalisa noma ingxenye yefayibha yokuwa. Kungakhathaliseki ukuthi kuzimo ezihlukanisayo eziyinhloko noma zesibili, ngenxa yokwehla okungazelelwe kweziqongo zokubonisa ekugcineni kwejika lokuhlola le-OTDR, inani lokulahlekelwa kwembuyiselo yesixhumanisi eside kakhulu segatsha kunethiwekhi ye-ODN lingase lingalinganiseki ngokunembile. Ngakho-ke, izinguquko ezingeni lokubonisa lesibonisi kufanele zikalwe njengesisekelo sokukalwa kwephutha nokuxilongwa.
Izibonisi ze-fiber optical nazo zingatshalwa ezindaweni ezidingekayo. Isibonelo, ukufaka i-FBG ngaphambi kwezindawo zokungena ze-Fiber-to-the-Home (FTTH) noma i-Fiber-to-the-Building (FTTB), bese ihlolwa nge-OTDR, kuvumela ukuqhathaniswa kwedatha yokuhlola ngokumelene nedatha yesisekelo ukuze kuhlonzwe amaphutha efiber yangaphakathi/yangaphandle noma yesakhiwo ngaphakathi/yangaphandle.
Izibonisi ze-Fiber optic zingafakwa kalula ochungechungeni ekugcineni komsebenzisi. Ukuphila kwabo okude, ukwethembeka okuzinzile, izici zokushisa ezincane, kanye nesakhiwo sokuxhuma i-adaptha esilula kuphakathi kwezizathu zokuthi ziyikhethelo elifanele le-optical terminal yokuqapha isixhumanisi senethiwekhi ye-FTTx. I-Yiyuantong inikeza izibonisi ze-FBG fibre optic ezinhlotsheni zokupakisha ezihlukahlukene, okuhlanganisa imikhono yohlaka lwepulasitiki, imikhono yohlaka lwensimbi, namafomu e-pigtail anezixhumi ze-SC noma ze-LC.
Isikhathi sokuthumela: Sep-11-2025