1. Umahluko phakathi kwee-transceivers ze-fiber optic ze-single-mode kunye ne-multi-mode
Ububanzi be-core ye-multimode fiber yi-50~62.5μm, ububanzi bangaphandle be-cladding yi-125μm, kwaye ububanzi be-core ye-single-mode fiber yi-8.3μm, kwaye ububanzi bangaphandle be-cladding yi-125μm. Amaza ombane asebenzayo e-optical fibers yi-0.85 μm kumaza ombane amafutshane, yi-1.31 μm kunye ne-1.55 μm kumaza ombane amade. Ukulahleka kwe-fiber ngokuqhelekileyo kuncipha nge-wavelength, ukulahleka kwe-0.85μm yi-2.5dB/km, ukulahleka kwe-1.31μm yi-0.35dB/km, kwaye ukulahleka kwe-1.55μm yi-0.20dB/km, okuyeyona lahleko iphantsi ye-fiber, ubude be-wavelength yi-1.65. Ukulahleka okungaphezulu kwe-μm kudla ngokwanda. Ngenxa yesiphumo sokufunxa se-OHˉ, kukho iincopho zokulahleka kuluhlu lwe-0.90~1.30μm kunye ne-1.34~1.52μm, kwaye ezi zigaba zimbini azisetyenziswa ngokupheleleyo. Ukusukela ngeminyaka yoo-1980, iifayibha zemowudi enye bezisoloko zisetyenziswa, kwaye ubude obude be-1.31 μm busetyenziswe kuqala.
Ifayibha ye-Multimode
Ifayibha ye-Multimode: I-core yeglasi ephakathi ityebile (50 okanye 62.5μm), enokudlulisa ukukhanya ngeendlela ezahlukeneyo. Kodwa ukusasazeka kwayo phakathi kwe-intermodal kukhulu, nto leyo ethintela imvamisa yokudlulisa imiqondiso yedijithali, kwaye kuya kuba nzima ngakumbi ngokwanda komgama. Umzekelo: ifayibha ye-600MB/KM ine-bandwidth ye-300MB kuphela kwi-2KM. Ke ngoko, umgama wokudluliselwa kwefayibha ye-multimode mfutshane kakhulu, ngokubanzi ziikhilomitha ezimbalwa kuphela.
ifayibha yemo enye
Ifayibha yemowudi enye (Ifayibha yemowudi enye): Umbindi weglasi ephakathi ubhityile kakhulu (ububanzi bemowudi ngokubanzi yi-9 okanye i-10 μm), kwaye yindlela enye yokukhanya inokudluliselwa. Ke ngoko, ukusasazeka kwayo phakathi kwemodal kuncinci kakhulu, okufanelekileyo kunxibelelwano olude, kodwa kukwakho nokusasazeka kwezinto kunye nokusasazeka kwe-waveguide, ngoko ke ifayibha yemowudi enye ineemfuno eziphezulu kububanzi be-spectral kunye nokuzinza komthombo wokukhanya, oko kukuthi, ububanzi be-spectral kufuneka bube mxinwa kwaye buzinzile. Yiba mhle. Kamva, kwafunyaniswa ukuba kubude be-1.31 μm, ukusasazeka kwezinto kunye nokusasazeka kwe-waveguide yefayibha yemowudi enye zilungile kwaye zimbi, kwaye ubukhulu bufana ncamashi. Oku kuthetha ukuba kubude be-1.31 μm, ukusasazeka okupheleleyo kwefayibha yemowudi enye yi-zero. Kwiimpawu zokulahleka kwefayibha, i-1.31μm yifestile nje yokulahleka okuphantsi kwefayibha. Ngale ndlela, ummandla wobude be-1.31μm ube yindawo efanelekileyo yokusebenza yonxibelelwano lwe-optical fiber, kwaye ikwayindlela ephambili yokusebenza yeenkqubo zonxibelelwano lwe-optical fiber ezisebenzayo. Iiparameter eziphambili ze-1.31μm i-fiber eqhelekileyo ye-single-mode zimiselwa yi-International Telecommunication Union ITU-T kwingcebiso ye-G652, ngoko ke le fiber ikwabizwa ngokuba yi-G652 fiber.
Ngaba iteknoloji yemowudi enye kunye neyemowudi ezininzi ziveliswa ngaxeshanye? Ngaba yinyani ukuba eyona iphambili kunye neyemowudi ezininzi iphambili? Ngokubanzi, imowudi ezininzi isetyenziselwa imigama emifutshane, kwaye imowudi enye kuphela esetyenziselwa imigama emide, kuba ukuhanjiswa kunye nokwamkelwa kweefayibha zemowudi ezininzi Isixhobo sibiza kancinci kunemowudi enye.
Ifayibha yemowudi enye isetyenziselwa ukudlulisa idatha kumgama omde, kwaye ifayibha yemowudi ezininzi isetyenziselwa ukudlulisa idatha ngaphakathi. Imowudi enye kuphela enokusetyenziselwa ukudlulisa idatha kumgama omde, kodwa imowudi ezininzi azisoloko zisetyenziselwa ukudlulisa idatha ngaphakathi.
Nokuba iifayibha ze-optical ezisetyenziswa kwiiseva nakwizixhobo zokugcina zi-single-mode okanye zi-multi-mode. Uninzi lwazo zisebenzisa ii-multi-mode, kuba ndisebenza kuphela kwiifayibha ze-optical zonxibelelwano kwaye andicaci kakuhle ngalo mba.
Ngaba iifayibha ze-optical kufuneka zisetyenziswe ngababini, kwaye ngaba kukho naziphi na izixhobo ezifana nee-single-hole single-mode fiber signal converters?
Ngaba i-optical fiber kufuneka isetyenziswe ngababini? Ewe, kwisiqingatha sesibini sombuzo, ngaba ufuna ukuhambisa nokufumana ukukhanya kwi-optical fiber enye? Oku kunokwenzeka. Inethiwekhi ye-optical fiber ye-1600G backbone ye-China Telecom inje.
Umahluko ophambili phakathi kwee-transceivers ze-fiber optic zemowudi enye kunye nee-transceivers ze-fiber optic zemowudi ezininzi ngumgama wokudlulisela. I-transceiver ye-fiber optic yemowudi ezininzi yi-transmission yesignali ye-node ezininzi kunye ne-port ezininzi kwimo yokusebenza, ngoko ke ukudluliselwa komgama wesignali kufutshane kakhulu, kodwa kulula ngakumbi, kwaye akufuneki ukusebenzisa ulwakhiwo lwe-intranet yendawo. I-fiber enye yi-transmission ye-node enye, ngoko ke ifanelekile ukudluliselwa kwemigca ye-trunk yomgama omde kwaye yenza ulwakhiwo lwenethiwekhi yendawo enqamlezileyo.
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2. Indlela yokwahlula ii-transceivers ze-fiber optic ze-single-mode kunye ne-multi-mode
Ngamanye amaxesha, kufuneka siqinisekise uhlobo lwe-transceiver ye-fiber optic, ngoko ke singazi njani ukuba i-transceiver ye-fiber optic yi-single-mode okanye yi-multi-mode?
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1. Yahlula kwintloko enempandla, khupha isiciko sothuli se-fiber optic transceiver, uze ujonge umbala wezinto ezikwi-interface entloko enempandla. Icala elingaphakathi le-single-mode TX kunye ne-RX interfaces ligqunywe nge-ceramics ezimhlophe, kwaye i-multi-mode interface imdaka.
2. Yahlula kwimodeli: ngokubanzi bona ukuba kukho u-S kunye no-M kwimodeli, u-S uthetha imo enye, u-M uthetha imo ezininzi.
3. Ukuba ifakiwe kwaye isetyenzisiwe, ungayibona umbala we-fiber jumper, i-orenji inemodi ezininzi, umthubi unemodi enye.
Ixesha lokuthumela: Septemba-01-2022