Isixhumi se-fiber optical
Isixhumi se-fiber optic siqukethe i-fiber kanye nepulaki kuzo zombili iziphetho zefayibha.Ipulaki iqukethe iphinikhodi kanye nesakhiwo sokukhiya se-peripheral.Ngokwezinqubo zokukhiya ezihlukene, izixhumi zefiber zingahlukaniswa ngohlobo lwe-FC, uhlobo lwe-SC, uhlobo lwe-LC, uhlobo lwe-ST kanye nohlobo lwe-KTRJ.
Isixhumi se-FC samukela indlela yokukhiya intambo futhi iyisixhumi esinyakazayo se-fiber okuwukusungulwa kwasekuqaleni nokusetshenziswa kakhulu.
I-SC iyilunga elingunxande elakhiwe yi-NTT.Ingafakwa ngokuqondile futhi isuswe ngaphandle kokuxhumeka kwentambo.Uma iqhathaniswa nesixhumi se-FC, inendawo encane yokusebenza futhi kulula ukuyisebenzisa.Imikhiqizo ye-Ethernet esezingeni eliphansi ivame kakhulu.
Isixhumi se-ST sathuthukiswa yi-AT&T futhi sisebenzisa indlela yokukhiya i-bayonet.Izinkomba zepharamitha eziyinhloko zilingana nezixhumi ze-FC ne-SC, kodwa azivamile kuzicelo zenkampani.Ngokuvamile asetshenziswa kumadivayisi anemodi eminingi futhi asetshenziswa kaningi uma edokwe nemishini yabanye abakhiqizi.
Izikhonkwane ze-KTRJ zenziwe ngepulasitiki futhi zibekwe ngezikhonkwane zensimbi.Njengoba inani lokufakwayo nokukhishwayo landa, izindawo zokukhwelana ziyaguga, futhi ukuzinza kwesikhathi eside akukuhle njengezixhumi zephini le-ceramic.
Ulwazi lwefiber optical
I-fiber optical iyi-conductor edlulisa amaza okukhanya.I-fiber ye-optical ingahlukaniswa ibe i-fibre yemodi eyodwa kanye ne-multimode fiber kusukela kumodi yokudlulisa amehlo.
Ku-fiber yemodi eyodwa, ukudluliswa kokukhanya kunemodi eyodwa kuphela eyisisekelo, okusho ukuthi ukukhanya kudluliselwa kuphela eduze komgogodla wangaphakathi we-fiber.Njengoba ukusabalalisa kwemodi kugwenywe ngokuphelele, i-fiber yemodi eyodwa inebhendi yokudlulisela ebanzi futhi ifanelekile. yokuxhumana nge-fiber esheshayo, yebanga elide.
Ku-multimode fiber, kunezindlela eziningi zokudlulisa amehlo.Ngenxa yokuhlakazeka noma ukuphambuka, ukusebenza kokudlulisela kwe-optical fibre kubi, ibhande lemvamisa lincane, izinga lokudlulisela lincane, nebanga lifushane.
Imingcele yesici se-fiber optical
Isakhiwo se-fiber optical yakhiwe ngaphambili yi-quartz fibre rod, kanti ububanzi bangaphandle be-multimode fibre kanye ne-single mode fiber yokuxhumana zombili ziyi-125.μm.
I-slimming ihlukaniswe izingxenye ezimbili: I-Core kanye ne-Cladding layer.I-fiber core yemodi eyodwa inobubanzi obungu-8~10μm.I-multimode fiber core diameter inezincazelo ezimbili ezijwayelekile, kanti ububanzi obuyingqikithi bungu-62.5μm (okujwayelekile kwase-US) no-50μm (Izinga laseYurophu).
Ukucaciswa kwe-fiber interface kunencazelo enjalo: 62.5μm / 125μm multimode fiber, okuyi-62.5μm ibhekisela kububanzi obuwumgogodla wefayibha, kanye no-125μm ibhekisela kububanzi obungaphandle befayibha.
Imicu yemodi eyodwa isebenzisa ubude begagasi obungu-1310 nm noma u-1550 nm.
Imicu ye-Multimode isebenzisa ubude begagasi obungama-850 nm.
I-fiber yemodi eyodwa kanye ne-multimode fiber ingahlukaniswa ngombala.Umzimba wangaphandle wefayibha yemodi eyodwa uphuzi, kanti umzimba wangaphandle we-multimode fibre unombala osawolintshi.
I-Gigabit optical port
Izimbobo ze-Gigabit optical zingasebenza ngazo zombili izindlela zokuphoqelelwa kanye nezokuxoxisana ngokuzenzakalela.Ezicacisweni ze-802.3, imbobo ye-Gigabit optical isekela kuphela isivinini esingu-1000M futhi isekela amamodi e-duplex egcwele (Egcwele) kanye ne-half-duplex (Half).
Umehluko obaluleke kakhulu phakathi kwezingxoxo ezizenzakalelayo nokuphoqelela ukuthi ukusakaza kwekhodi okuthunyelwa lapho kokubili kusungula isixhumanisi esibonakalayo kuhlukile.Imodi yezingxoxo ezizenzakalelayo ithumela ikhodi /C/, okuwukusakaza kwekhodi yokumisa, futhi imodi ephoqelelwe ithumela / I / ikhodi, okuwukusakaza okungenamsebenzi.
I-Gigabit optical port self - inqubo yokuxoxisana
Okokuqala: zombili iziphetho zisethelwe kumodi yezingxoxo ezizenzakalelayo
Izinhlangothi zombili zithumelana/ukusakazwa kwekhodi komunye nomunye.Uma / C/amakhodi amathathu afanayo atholwa ngokulandelana futhi ukusakaza kwekhodi etholiwe kufana nemodi yokusebenza yesiphetho sasendaweni, elinye iqembu libuyisela ikhodi /C/ ngempendulo ye-Ack.Ngemuva kokuthola imininingwane ye-Ack, untanga ubheka ukuthi bobabili bangaxhumana futhi basethe ichweba kuhulumeni we-UP.
Okwesibili:isiphelo esisodwa sisethelwe ekuxoxisaneni okuzenzakalelayo, isiphetho esisodwa sisethelwe ekubeni yisibopho
Isiphetho sengxoxo esizenzakalelayo sithumela u-/C/stream, futhi isiphetho esiphoqelelwe sithumela i-/I/stream.Isiphetho esiphoqayo asikwazi ukunikeza untanga ulwazi lwezingxoxo lwesiphetho sendawo, futhi asikwazi ukubuyisela impendulo ye-Ack kontanga.Ngakho-ke, itheminali yezingxoxo ezizenzakalelayo PHANSI.Kodwa-ke, isiphetho esiphoqayo ngokwaso singabona i-/C/code, futhi sicabange ukuthi isiphetho sontanga siyimbobo eyazifanelayo, ngakho-ke setha imbobo yendawo ngokuqondile kusifunda se-UP.
Okwesithathu:zombili iziphetho zisethelwe kumodi eyisibopho
Amaqembu amabili athumelana/mina/imifudlana.Ngemva kokuthola i/I/stream, untanga ubheka ukuthi untanga iyichweba elifana nontanga.
Uyini umehluko phakathi kwe-multimode ne-singlemode fiber?
Imodi eningi:
Imicu engahamba isuka emakhulwini iye ezinkulungwaneni zezindlela ibizwa ngokuthi i-multimode (MM) fibers.Ngokusho kokusabalalisa kwe-radial index of refractive in the core kanye ne-cladding, ingabuye ihlukaniswe ibe yisinyathelo se-multimode fiber kanye ne-gradual multimode fiber.Cishe konke imicu ye-multimode inosayizi ongu-50/125 μm noma 62.5/125 μm, futhi umkhawulokudonsa (inani lolwazi oludluliswa yifayibha) ngokuvamile lingu-200 MHz ukuya ku-2 GHz. .I-diode ekhipha ukukhanya noma i-laser isetshenziswa njengomthombo wokukhanya.
Imodi eyodwa:
Ifayibha engasakaza imodi eyodwa kuphela ibizwa ngokuthi i-fibre yemodi eyodwa.Iphrofayili yenkomba ye-fiber refractive ejwayelekile (SM) ifana ne-fibre yesinyathelo, ngaphandle kokuthi ububanzi obuyisisekelo buncane kakhulu kune-multimode fiber.
Usayizi we-fiber yemodi eyodwa ngu-9-10/125μm futhi inomkhawulokudonsa ongapheli kanye nezici zokulahlekelwa eziphansi kune-multimode fiber.Ama-transceivers optical wemodi eyodwa avame ukusetshenziselwa ukudluliswa kwebanga elide, ngezinye izikhathi afinyelela ku-150 kuya ku-200 amakhilomitha.Ama-LED ane-LD emincane noma imigqa ye-spectral asetshenziswa njengomthombo wokukhanya.
Umehluko nokuxhumana:
Amadivayisi emodi eyodwa ngokuvamile asebenza kuwo womabili amafayibha emodi eyodwa namafayibha e-multimode, kuyilapho amadivaysi e-multimode ekhawulelwe ekusebenzeni kumafayibha e-multimode.