Kwiinethiwekhi ze-PON (Passive Optical Network), ngakumbi ngaphakathi kwe-topology ye-PON ODN (Optical Distribution Network) entsonkothileyo, ukujonga ngokukhawuleza kunye nokuchonga iimpazamo zefayibha kuzisa imingeni ebalulekileyo. Nangona ii-reflectometers ze-optical time domain (OTDRs) zizixhobo ezisetyenziswa kakhulu, ngamanye amaxesha azinawo uvakalelo olwaneleyo lokufumanisa ukuncitshiswa kwesignali kwiifayibha zesebe ze-ODN okanye kwiziphelo zefayibha ze-ONU. Ukufaka i-reflector yefayibha ekhethiweyo ubude obuphantsi kwicala le-ONU yindlela eqhelekileyo evumela ukulinganiswa okuchanekileyo kokuncitshiswa kwekhonkco ze-optical ukusuka ekupheleni ukuya ekupheleni.
I-fiber reflector isebenza ngokusebenzisa i-optical fiber grating ukuze ibonise i-OTDR test pulse back nge-reflectivity ephantse ibe yi-100%. Okwangoku, ubude bexesha obuqhelekileyo benkqubo ye-passive optical network (PON) budlula kwi-reflector ngokunciphisa okuncinci kuba ayihlangabezani nemeko yeBragg ye-fiber grating. Umsebenzi oyintloko wale ndlela kukubala ngokuchanekileyo ixabiso lokulahleka kokubuya kwesiganeko ngasinye sokuphela kwesebe le-ONU ngokufumanisa ubukho kunye nobukhali besignali yovavanyo lwe-OTDR ebonisiweyo. Oku kwenza kube lula ukumisela ukuba ikhonkco le-optical phakathi kwamacala e-OLT kunye ne-ONU lisebenza ngokuqhelekileyo na. Ngenxa yoko, ifezekisa ukujonga iindawo zempazamo ngexesha langempela kunye nokuxilongwa ngokukhawuleza nangokuchanekileyo.
Ngokusebenzisa ii-reflectors ngokuguquguquka ukuze kuchongwe amacandelo ahlukeneyo e-ODN, ukufunyanwa ngokukhawuleza, indawo, kunye nohlalutyo lwembangela yempazamo ze-ODN kunokufezekiswa, kunciphisa ixesha lokusombulula iimpazamo ngelixa kuphucula ukusebenza kakuhle kovavanyo kunye nomgangatho wokugcinwa kwemigca. Kwimeko yokuqhekeza okuphambili, ii-reflectors zefayibha ezifakwe kwicala le-ONU zibonisa iingxaki xa i-reflector yesebe ibonisa ilahleko yokubuya ephezulu kakhulu xa kuthelekiswa nesiseko sayo esisempilweni. Ukuba onke amasebe efayibha axhotyiswe ngee-reflectors ngaxeshanye abonisa ilahleko yokubuya ecacileyo, oko kubonisa impazamo kwifayibha yesiqu esiphambili.
Kwimeko yokwahlulahlula kwesibini, umahluko kwilahleko yokubuyisela ungathelekiswa nokuchonga ngokuchanekileyo ukuba iimpazamo zokunciphisa ziyavela na kwicandelo lefayibha yokusasaza okanye kwicandelo lefayibha yokulahla. Nokuba kwimeko yokwahlulahlula kwesiseko okanye kwesesibini, ngenxa yokwehla ngokukhawuleza kweencopho zokubonakalisa ekupheleni kwejika lovavanyo lwe-OTDR, ixabiso lokulahleka kokubuyisela lekhonkco elide lesebe kwinethiwekhi ye-ODN lisenokungalinganiswa ngokuchanekileyo. Ke ngoko, utshintsho kwinqanaba lokubonakalisa le-reflector kufuneka lilinganiswe njengesiseko sokulinganisa iimpazamo kunye nokuxilongwa.
Ii-reflectors ze-optical fiber nazo zingafakwa kwiindawo ezifunekayo. Umzekelo, ukufaka i-FBG ngaphambi kweendawo zokungena ze-Fiber-to-the-Home (FTTH) okanye i-Fiber-to-the-Building (FTTB), emva koko kuvavanywe nge-OTDR, kuvumela ukuthelekiswa kwedatha yovavanyo ngokuchasene nedatha esisiseko ukuze kuchongwe iimpazamo zefayibha zangaphakathi/zangaphandle okanye zesakhiwo.
Ii-reflectors ze-fiber optic zingafakwa ngokulula kuluhlu olupheleleyo kumsebenzisi. Ubomi bazo obude, ukuthembeka okuzinzileyo, iimpawu zobushushu obuphantsi, kunye nolwakhiwo loqhagamshelo lwe-adaptha olulula zezinye zezizathu zokuba zilukhetho olufanelekileyo lwe-optical terminal yokujonga ikhonkco lenethiwekhi ye-FTTx. I-Yiyuantong inikezela ngee-reflectors ze-FBG fiber optic kwiintlobo ezahlukeneyo zokupakisha, kubandakanya ii-sleeves zefreyimu yeplastiki, ii-sleeves zefreyimu yesinyithi, kunye neefom ze-pigtail ezinee-SC okanye ii-LC connectors.
Ixesha leposi: Sep-11-2025