Umehluko phakathi kwe-single-mode kanye ne-multi-mode fibre optic transceivers Izindlela ezi-3 zokuhlukanisa i-single-mode kanye ne-multi-mode fibre optic transceivers

1. Umehluko phakathi kwama-transceivers e-fiber optic yemodi eyodwa enemodi eyodwa

I-diameter eyinhloko ye-multimode fiber ingu-50 ~ 62.5μm, ububanzi obungaphandle be-cladding buyi-125μm, futhi ububanzi obuyingqikithi ye-fiber yemodi eyodwa ingu-8.3μm, kanti ububanzi obungaphandle bokuvala buyi-125μm.Amaza amaza asebenzayo emicu yokubona angu-0.85 μm ngamaza amafushane, 1.31 μm no-1.55 μm ngamaza amade.Ukulahleka kwe-fiber ngokuvamile kuncipha ngobude be-wavelength, ukulahlekelwa ngu-0.85μm ngu-2.5dB/km, ukulahlekelwa ngu-1.31μm ngu-0.35dB/km, kanti ukulahlekelwa ngu-1.55μm ngu-0.20dB/km, okuwukulahlekelwa okuphansi kakhulu i-fiber, ubude begagasi obungu-1.65 Ukulahlekelwa ngaphezu kwe-μm kuvame ukwanda.Ngenxa yomphumela wokumuncwa we-OHˉ, kukhona iziqongo zokulahlekelwa kububanzi obungu-0.90~1.30μm no-1.34~1.52μm, futhi lezi zigaba ezimbili azisetshenziswa ngokugcwele.Kusukela ngawo-1980, imicu yemodi eyodwa ijwayele ukusetshenziswa, kanti ubude begagasi bude be-1.31 μm busetshenziswe kuqala.
I-Multimode fiber

I-Multimode fiber: Ingqikithi yengilazi emaphakathi ishubile (50 noma 62.5μm), engadlulisa ukukhanya ngezindlela eziningi.Kodwa ukuhlakazeka kwayo kwe-intermodal kukhulu, okukhawulela imvamisa yokudlulisa amasignali edijithali, futhi kuzoba kubi kakhulu ngokwanda kwebanga.Isibonelo: i-600MB/KM fiber inomkhawulokudonsa ongu-300MB kuphela ku-2KM.Ngakho-ke, ibanga lokudluliswa kwefayibha ye-multimode lifushane, ngokuvamile lingamakhilomitha ambalwa kuphela.

I-fiber yemodi eyodwa
I-fiber yemodi eyodwa (I-Single Mode Fiber): Umongo wengilazi omaphakathi mncane kakhulu (ububanzi obuwumgogodla ngokuvamile bungu-9 noma u-10 μm), futhi imodi yokukhanya eyodwa kuphela engadluliswa.Ngakho-ke, ukuhlakazeka kwayo kwe-intermodal kuncane kakhulu, okulungele ukuxhumana okude, kodwa kukhona nokuhlakazeka kwezinto ezibonakalayo kanye nokuhlakazeka kwe-waveguide, ngakho-ke i-fiber yemodi eyodwa inezidingo eziphakeme kububanzi be-spectral nokuzinza komthombo wokukhanya, okungukuthi. , ububanzi be-spectral kufanele bube buncane futhi buzinze.Uziphathe kahle.Kamuva, kwatholakala ukuthi ku-wavelength ye-1.31 μm, ukuhlakazeka kwezinto ezibonakalayo kanye nokuhlakazeka kwe-waveguide ye-fiber yemodi eyodwa kukhona okuhle nokubi, futhi ubukhulu bufana ncamashi.Lokhu kusho ukuthi kubude begagasi obungu-1.31 μm, ukuhlakazwa okuphelele kwefayibha yemodi eyodwa kunguziro.Kusukela kuzici zokulahlekelwa kwefayibha, i-1.31μm imane nje iyifasitela elilahlekelwa kancane lefiber.Ngale ndlela, isifunda se-wavelength esingu-1.31μm sesiphenduke iwindi elikahle lokusebenza lokuxhumana nge-fiber optical, futhi liphinde libe ibhande eliyinhloko elisebenzayo lezinhlelo zokuxhumana ze-optical fiber.Imingcele eyinhloko ye-1.31μm evamile ye-fiber yemodi eyodwa inqunywa yi-International Telecommunication Union ITU-T esincomweni se-G652, ngakho le fiber ibizwa nangokuthi i-G652 fiber.

Ingabe ubuchwepheshe bemodi eyodwa kanye nemodi eminingi kukhiqizwa ngesikhathi esisodwa?Ingabe kuyiqiniso ukuthi okuthuthuke kakhulu futhi imodi eminingi ithuthuke kakhulu?Ngokuvamile, i-multi-mode isetshenziselwa amabanga amafushane, futhi imodi eyodwa kuphela isetshenziselwa amabanga akude, ngoba ukudluliswa nokwamukela imicu yemodi eminingi Idivayisi ishibhile kakhulu kunemodi eyodwa.

I-fiber yemodi eyodwa isetshenziselwa ukudlulisa ibanga elide, futhi i-multi-mode fiber isetshenziselwa ukudluliswa kwedatha yasendlini.Imodi eyodwa kuphela engasetshenziselwa ibanga elide, kodwa imodi eminingi ayisetshenziselwa ukudluliswa kwedatha yasendlini.

Kungakhathaliseki ukuthi ama-optical fibers asetshenziswa kumaseva namadivayisi wesitoreji anemodi eyodwa noma imodi eminingi Iningi lazo lisebenzisa imodi eminingi, ngoba ngizibandakanye kuphela ekuxhumaneni optical fibers futhi angicaci kahle ngalolu daba.

Ingabe imicu yokubona kufanele isetshenziswe ngababili, futhi ingabe ikhona imishini efana neziguquli zesignali ye-fibre yemodi eyodwa yembobo eyodwa?

Ingabe i-optical fiber kufanele isetshenziswe ngababili?Yebo, engxenyeni yesibili yombuzo, ingabe uqonde ukudlulisa nokwamukela ukukhanya ku-fiber eyodwa optical?Lokhu kungenzeka.Inethiwekhi ye-fiber optical fiber yaseChina Telecom ifana nalokhu.

Umehluko obaluleke kakhulu phakathi kwama-transceivers e-fiber optic yemodi eyodwa kanye nama-multi-mode fiber optic transceivers yibanga lokudlulisela.I-multi-mode optical fiber transceiver iyi-multi-node kanye ne-multi-port signal transmission kwimodi yokusebenza, ngakho-ke ukudluliswa kwebanga lesiginali kufushane, kodwa kulula kakhulu, futhi akudingekile ukusebenzisa ukwakhiwa kwe-intranet yendawo. .I-Single fibre iyi-node eyodwa yokudlulisa, ngakho ifanele ukudluliswa kwemigqa ye-trunk yebanga elide futhi ihlanganisa ukwakhiwa kwenethiwekhi yendawo enqamula idolobha elikhulu.

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2. Ungawahlukanisa kanjani ama-transceivers e-fiber optic yemodi eyodwa kanye nemodi eminingi

Kwesinye isikhathi, sidinga ukuqinisekisa uhlobo lwe-fiber optic transceiver, ngakho-ke singanquma kanjani ukuthi i-fiber optic transceiver iyimodi eyodwa noma imodi eminingi?

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1. Hlukanisa nempandla enempandla, khipha isivalo sothuli se-fiber optic transceiver, bese ubheka umbala wezingxenye zesixhumi esibonakalayo esempandleni.Uhlangothi lwangaphakathi lwemodi eyodwa ye-TX kanye ne-RX lumbozwe ngezitsha zobumba ezimhlophe, futhi isixhumi esibonakalayo esinamamodi amaningi sinsundu.

2. Hlukanisa nemodeli: ngokuvamile bheka ukuthi kukhona u-S no-M kumodeli, u-S usho imodi eyodwa, u-M usho imodi eminingi.

3. Uma ifakiwe futhi yasetshenziswa, ungabona umbala we-fiber jumper, owolintshi unemodi eminingi, ophuzi yimodi eyodwa.