Kwiinethiwekhi ze-PON (i-Passive Optical Network), ngokukodwa kwi-complex point-to-multipoint PON ODN (i-Optical Distribution Network) i-topology, ukujonga ngokukhawuleza kunye nokuxilongwa kweempazamo zefiber kubonisa imingeni ebalulekileyo. Nangona i-optical time domain reflectometers (OTDRs) zizixhobo ezisetyenziswa ngokubanzi, ngamanye amaxesha ziswele uvakalelo olwaneleyo lokubona i-signal attenuation kwiifiber zesebe ze-ODN okanye kwi-ONU fiber ends. Ukufakela i-fiber reflector yexabiso eliphantsi le-wavelength-selective fiber kwicala le-ONU yinto eqhelekileyo eyenza ukulinganisa okuchanekileyo kokuphela kokuphela kwe-optical links.
I-fiber reflector isebenza ngokusebenzisa i-fiber optical grating ukubonakalisa i-OTDR yovavanyo lwe-pulse umva malunga ne-100% ebonakalayo. Okwangoku, ubude obuqhelekileyo bokusebenza kwe-passive optical network (PON) inkqubo idlula kwisibonisi kunye nokuthomalalisa okuncinci kuba ayanelisi imeko yeBragg ye-fiber grating. Umsebenzi ophambili wale ndlela yokubala ngokuchanekileyo ixabiso lelahleko elibuyiswayo kwisiganeko sokubonakalisa isebe le-ONU lokupheliswa ngokubona ubukho kunye nobunzulu bophawu lovavanyo lwe-OTDR olubonakalisiweyo. Oku kwenza ukuba kumiselwe ukuba ikhonkco le-optical phakathi kwe-OLT kunye namacala e-ONU lisebenza ngokuqhelekileyo. Ngenxa yoko, ifezekisa ukubekwa esweni kwexesha lokwenyani lamanqaku eempazamo kunye noxilongo olukhawulezayo, oluchanekileyo.
Ngokuhambisa ngokuguquguqukayo izibonisi ukuchonga amacandelo e-ODN ahlukeneyo, ukufumanisa ngokukhawuleza, ukugcinwa kwendawo, kunye nohlalutyo lwesizathu seempazamo ze-ODN lunokufezekiswa, ukunciphisa ixesha lokusombulula iimpazamo ngelixa uphucula ukusebenza kovavanyo kunye nomgangatho wokugcinwa komgca. Kwimeko yokwahlula okuphambili, izibonisi zefiber ezifakwe kwicala le-ONU zibonisa imiba xa i-reflector yesebe ibonisa ilahleko yombuyekezo eyandisiweyo xa kuthelekiswa nesiseko sayo esisempilweni. Ukuba onke amasebe osinga axhotyiswe ngezibonisi ngaxeshanye abonisa ilahleko ebuyayo, oko kubonisa impazamo kwifiber ye-trunk engundoqo.
Kwimeko yokwahlulahlula okwesibini, umahluko kwilahleko yembuyekezo unokuthelekiswa nokukhomba ngokuchanekileyo ukuba ngaba iziphene zokuthomalalisa zenzeka kwicandelo lefiber yokuhambisa okanye icandelo lefiber yokulahla. Nokuba kukwiimeko zokwahlula okuprayimari okanye okwesibini, ngenxa yokuhla ngequbuliso kwiincopho zokubonisa ekupheleni kwegophe lovavanyo lwe-OTDR, ixabiso lelahleko elibuyiswayo lelona khonkco lide lesebe kuthungelwano lwe-ODN alinakulinganiswa ngokuchanekileyo. Ngoko ke, utshintsho kwinqanaba lokubonisa i-reflector kufuneka lilinganiswe njengesiseko sokulinganisa impazamo kunye nokuxilongwa.
Izibonisi zefiber ye-Optical nazo zinokubekwa kwiindawo ezifunekayo. Ngokomzekelo, ukufaka i-FBG ngaphambi kwe-Fiber-to-the-Home (FTTH) okanye i-Fiber-to-the-Building (FTTB) yokungena, emva koko ukuvavanya nge-OTDR, ivumela ukuthelekisa idatha yovavanyo ngokuchasene nedatha yesiseko ukuchonga ngaphakathi / ngaphandle okanye kwizakhiwo zangaphakathi / iintsilelo zefiber zangaphandle.
Izibonisi zeFiber optic zinokubekwa ngokulula kuthotho ekupheleni komsebenzisi. Ubomi babo obude, ukuthembeka okuzinzileyo, iimpawu ezincinci zeqondo lokushisa, kunye nesakhiwo soxhumo olulula lwe-adapter ziphakathi kwezizathu ezikhethiweyo zokukhetha i-terminal ye-FTTx yokujonga ikhonkco yenethiwekhi. I-Yiyuantong ibonelela nge-FBG i-fiber optic reflectors kwiindidi ezahlukeneyo zokupakisha, kubandakanya imikhono yesakhelo seplastiki, imikhono yesakhelo sesinyithi, kunye neefom ze-pigtail ezine-SC okanye izihlanganisi ze-LC.
Ixesha lokuposa: Sep-11-2025