1. Umahluko phakathi kwemodi enye kunye ne-multi-mode fiber optic transceivers
I-diameter engundoqo yefiber ye-multimode yi-50 ~ 62.5μm, i-diameter yangaphandle ye-cladding yi-125μm, kunye ne-diameter engundoqo ye-fiber-mode eyodwa yi-8.3μm, kunye ne-diameter yangaphandle ye-cladding yi-125μm.Ubude obusebenzayo bemicu ye-optical fibers yi-0.85 μm ye-wavelengths emfutshane, i-1.31 μm kunye ne-1.55 μm ubude obude.Ukulahleka kwefiber ngokubanzi kuncipha kunye nobude be-wavelength, ukulahlekelwa kwe-0.85μm yi-2.5dB / km, ukulahlekelwa kwe-1.31μm ngu-0.35dB / km, kunye nokulahlekelwa kwe-1.55μm yi-0.20dB / km, eyona lahleko iphantsi kwe- i-fiber, i-wavelength ye-1.65 Ilahleko ngaphezu kwe-μm ivame ukunyuka.Ngenxa yomphumo wokufunxa we-OHˉ, kukho iincopho zelahleko kuluhlu lwe-0.90 ~ 1.30μm kunye ne-1.34 ~ 1.52μm, kwaye ezi zintlu zimbini azisetyenziswanga ngokupheleleyo.Ukususela kwi-1980, iifayili ze-single-mode zivame ukusetyenziswa, kwaye ubude obude be-1.31 μm busetyenziswe kuqala.
I-Multimode fiber
I-Multimode fiber: I-core yeglasi engundoqo inzima (i-50 okanye i-62.5μm), enokudlulisa ukukhanya kwiindlela ezininzi.Kodwa ukusasazwa kwayo kwe-intermodal kukhulu, okukhawulela ukuphindaphinda kokuhanjiswa kweempawu zedijithali, kwaye kuya kuba nzima ngakumbi ngokunyuka komgama.Umzekelo: i-600MB/KM ifayibha ine-300MB kuphela i-bandwidth kwi-2KM.Ke ngoko, umgama wokuhanjiswa kwefayibha yemultimode mfutshane, ngokuqhelekileyo ziikhilomitha ezimbalwa.
i-fiber yemowudi enye
I-fiber yemodi enye (I-Fiber yeModi enye): I-core yeglasi engundoqo ibhityile kakhulu (i-diameter engundoqo ngokuqhelekileyo yi-9 okanye i-10 μm), kwaye imowudi enye kuphela yokukhanya inokudluliselwa.Ke ngoko, i-intermodal dispersion yayo incinci kakhulu, ilungele unxibelelwano lomgama omde, kodwa kukho ukusasazwa kwezinto kunye ne-waveguide dispersion, ngoko ke i-fiber yemodi enye ineemfuno eziphezulu kububanzi be-spectral kunye nokuzinza komthombo wokukhanya, oko kukuthi , ububanzi be-spectral kufuneka bube buncinci kwaye buzinzile.Lunga.Kamva, kwafunyaniswa ukuba kwi-wavelength ye-1.31 μm, ukuchithwa kwezinto eziphathekayo kunye ne-waveguide dispersion of the single-mode fiber is positive and negative, kwaye ubukhulu bufana ncakasana.Oku kuthetha ukuba kwi-wavelength ye-1.31 μm, i-dispersion iyonke ye-fiber ye-mode eyodwa yi-zero.Ukususela kwiimpawu zokulahlekelwa kwefiber, i-1.31μm yifestile ephantsi yelahleko yefiber.Ngale ndlela, ummandla we-wavelength we-1.31μm uye waba yifestile efanelekileyo yokusebenza yonxibelelwano lwefiber optical, kwaye ikwayeyona nto iphambili yokusebenza kweenkqubo zonxibelelwano lwefiber optical.Iiparamitha eziphambili ze-1.31μm ze-fiber ye-mode eyodwa zichongwa yi-International Telecommunication Union ITU-T kwisincomo se-G652, ngoko le fiber ibizwa ngokuba yi-G652 fiber.
Ngaba itekhnoloji yemowudi enye kunye neendlela ezininzi ziveliswa ngaxeshanye?Ngaba yinyani ukuba eyona iphambili kwaye imowudi eninzi iphambili?Ngokuqhelekileyo, i-multi-mode isetyenziselwa umgama omfutshane, kwaye imowudi enye kuphela isetyenziselwa imigama ekude, kuba ukuhanjiswa kunye nokwamkelwa kweefibers ze-multi-mode Isixhobo siphantsi kakhulu kunendlela enye.
I-fiber yemodi enye isetyenziselwa ukuhanjiswa komgama omde, kwaye i-fiber ye-multi-mode isetyenziselwa ukuhanjiswa kwedatha yangaphakathi.Kuphela imowudi enye ingasetyenziselwa umgama omde, kodwa imowudi eninzi ayisetyenziselwa ukuhanjiswa kwedatha yangaphakathi.
Ingaba iifayili ze-optical ezisetyenziswa kwiiseva kunye nezixhobo zokugcina ziyi-mode eyodwa okanye i-multi-mode Uninzi lwazo lusebenzisa i-multi-mode, kuba ndibandakanyeka kuphela kwimicu yonxibelelwano ye-optical fibers kwaye ayicaci kakuhle malunga nalo mbandela.
Ngaba iintsinga zamehlo kufuneka zisetyenziswe ngambini, kwaye ngaba kukho nasiphi na isixhobo esifana nomngxuma omnye-kwimowudi enye yeziguquli zomqondiso wefayibha?
Ngaba i-optical fiber kufuneka isetyenziswe ngababini?Ewe, kwisiqingatha sesibini sombuzo, ngaba uthetha ukuhambisa nokufumana ukukhanya kwifiber enye ye-optical?Oku kunokwenzeka.I-China Telecom ye-1600G i-backbone optical fiber network ifana nale.
Owona mahluko usisiseko phakathi kwe-fiber optic transceivers enemodi enye kunye ne-multi-mode fiber optic transceivers ngumgama wothumelo.I-multi-mode optical fiber transceiver yi-multi-node kunye ne-multi-port signal transmission kwimodi yokusebenza, ngoko ke ukuhanjiswa komgama wesignali kufutshane, kodwa kukulungele ngakumbi, kwaye akuyomfuneko ukusebenzisa ukwakhiwa kwe-intranet yendawo. .I-fiber enye yindlela yokuhanjiswa kwe-node enye, ngoko ifanelekile ukuhanjiswa kwemigca ye-trunk emide kwaye ibandakanya ukwakhiwa kwenethiwekhi yendawo ye-cross-metropolitan.
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2. Indlela yokwahlula i-single-mode kunye ne-multi-mode fiber optic transceivers
Ngamanye amaxesha, kufuneka siqinisekise uhlobo lwe-fiber optic transceiver, ngoko ukufumanisa njani ukuba i-fiber optic transceiver iyindlela enye okanye i-multi-mode?
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1. Ukwahlula kwintloko yempandla, khupha i-fiber optic transceiver bald head dust cap, kwaye ujonge umbala wamacandelo ojongano kwintloko yempandla.Icala langaphakathi lendlela enye ye-TX kunye ne-RX yojongano igqunywe ngeekeramics ezimhlophe, kwaye i-interface ye-multi-mode imdaka.
2. Ukwahlula kumzekelo: ngokuqhelekileyo ubone ukuba kukho i-S kunye ne-M kwimodeli, i-S ithetha imodi enye, i-M ithetha i-multi-mode.
3. Ukuba ifakiwe kwaye isetyenzisiwe, unokubona umbala we-fiber jumper, i-orenji yimowudi eninzi, i-yellow yindlela enye.
Ixesha lokuposa: Sep-01-2022