AmakhompyuthaImishini

I single imodi fibre futhi multimode ngokungafani

Uma kuziwa ukuthumela idatha kusuka endaweni eyodwa kude komunye, okwandisa esikhundleni bendabuko zethusi wire osonkontileka ikhasimende ababemenyelwe laying ikhebula optical. Mayelana nalesi ubuchwepheshe okuthakazelisayo esinawo namuhla futhi sizobe ukukhuluma.

Fiber-optic zokuxhumana line (FOL) usebenza isimiso ukudluliswa amaza okukhanya ngeziteshi ekhethekile eyenziwe okumsulwa kakhulu asebenza ngebhethri ingilazi. amaza kagesi of zikagesi enikeziwe ukuze Converter isignali, okudala ekusakazeni yokukhanya pulses futhi adlulisele ukuba ikhebula. Ngakolunye uhlangothi owamukelayo ukukhanya uthola ukusakaza kanye transcode ke emuva pulses kagesi. Ngoba yonke inqubo is ngekhompyutha elawulwa futhi ukuguqulwa digital, ukuhlanekezela ongaphakeme.

Ukwakha isifaki ezinjalo, sebenzisa izinto ezikhethekile - olulodwa-mode fibre futhi multimode.

Optic imigqa kwakuthé chithi saka kangaka, hhayi kuphela ngenxa yokungabi bikho zokungalihloniphi ukudluliselwa isignali. Phakathi izinzuzo obungenakuphikwa lobu buchwepheshe band ezibanzi, ebuthaka kakhulu isignali attenuation, ukumelana okungenakuqhathaniswa kunoma ukuphazamiseka bemvelo kagesi, elikhulu yokudlulisela uhla, okwenza amashumi amaningi amakhilomitha. A inzuzo enkulu inkonzo njalo okwesikhathi eside nezokuxhumana, wabeka usebenzisa isifaki, ube neminyaka eyi-25.

izinhlobo fibre

Lapho izixhumanisi obandayo usebenzisa umugqa fiber-optic kuyakhethwa noma multimode noma Imodi Umucu owodwa.

Kuyini lokhu ikhebula? Umnyombo fiber kuyinto asebenza ngebhethri, ultrapure ingilazi, nakho sidlula ugodo ukukhanya. A sishaye ke ingekho ngoba Inkomba igobolondo yezokubona ngaphansana nje nengaphakathi ke, ugongolo ukukhanya ngokuphelele kubonakala kusukela izindonga ngaphakathi fibre.

Multimode kahle ukuze ikwazi ukugijima izindlela abangamakhulu amaningana ukukhanya ukuthi yethulwe ngesikhathi engeli lehlukene. Imodi ngamunye has endleleni zayo futhi, ngenxa yalokho, le esiphelweni isikhathi esiyingqayizivele.

I ethile eyinhloko lolu hlobo fibre - Imodi ukuhlakazwa, okuyinto unciphise le -bandwidth kuletse esiphezulu umugqa obuphelele. Omoya ukuze multimode zokuxhumana imigqa ngokuvamile ibanga esiphezulu mayelana 5 amakhilomitha.

Inkinga wokunciphisa imodi ukuhlakazwa enquma ikhebula nge umyela yezokubona iphrofayela Inkomba ekujuleni kwenhliziyo. Lokhu fibre, ngokungafani kuya ejwayelekile ongakhetha ongakhetha yezokubona Inkomba incipha kusukela core sosizo ukuze igobolondo, onikeza ekwenteni ncono kwemigomo isignali ngocansi.

I single imodi fibre yakhelwe, esekelwe umsebenzi sidlula isiteshi zokuxhumana imodi eyodwa kuphela (eziyisisekelo). Le ndlela kunezinzuzo eziningi. Ezinye izici in the ikhebula, eyenziwe olulodwa-mode ubuchwepheshe, i-oda ezidlula kunelika ezivezwa multimode. Lona okunqumayo ukuthi kuthinta ukukhetha esivuna onjiniyela kuqala laying entsha fibre optic link. Ngempela, elilodwa-mode fibre inikeza attenuation at 0,25db ikhilomitha ngalinye, ukwehluka kwalo lincane kakhulu futhi komkhawulokudonsa ububanzi ihlinzeka ukudluliswa ecacile futhi okusheshayo esiningi idatha ngaphandle ukuhlanekezela.

Kodwa ikhona yini fly wamafutha e lamafutha. Lolu hlobo lungaphezu eqolo ngaphezu kwanoma multimode fibre. Njengoba ubukhulu cores ukukhanya-kuqondise olulodwa-ikhebula lincane kakhulu, okokufaka emisebeni e ikhebuli enjalo kuyinselele futhi kudinga ukuzithiba uqaphele kakhulu splicing. Izixhumi ekupheleni lezi imigqa futhi kuyabiza kakhulu ukwedlula multimode kontseviki imigqa. Ngaphezu kwalokho, ngenxa yokugcina ukuba inkimbinkimbi ukukhanya ugongolo okokufaka ibe core ezibanzi silula, zidlulisele ezishibhile, okuyinto nawo owabhalwa lenqwaba izinkampani ukuncintisana.

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