I-Fiber to the Home (FTTH) uhlelo olufaka ama-fiber optics kusuka endaweni ephakathi ngqo ezakhiweni ngazinye njengezindlu namafulethi. Ukufakwa kwe-FTTH sekuhambe ibanga elide ngaphambi kokuba abasebenzisi basebenzise ama-fiber optics esikhundleni sethusi ukuze bafinyelele i-inthanethi ye-broadband.
Kunezindlela ezimbili eziyisisekelo zokusebenzisa inethiwekhi ye-FTTH enesivinini esikhulu:amanethiwekhi optical asebenzayo(AON) kanye nokungasebenziamanethiwekhi optical(I-PON).
Ngakho-ke amanethiwekhi e-AON ne-PON: uyini umehluko?
Iyini inethiwekhi ye-AON?
I-AON iyisakhiwo senethiwekhi esiqondile lapho ubhalisile ngamunye enomugqa wakhe we-fiber optic oqedwa ku-optical concentrator. Inethiwekhi ye-AON ihlanganisa amadivayisi okushintsha asebenza ngogesi njengama-router noma ama-switching aggregators ukuphatha ukusatshalaliswa kwesignali kanye nokubonisana okuqondisiwe kumakhasimende athile.
Amaswishi avuliwe futhi avaliwe ngezindlela ezahlukene ukuqondisa izimpawu ezingenayo neziphumayo ezindaweni ezifanele. Ukuthembela kwenethiwekhi ye-AON kubuchwepheshe be-Ethernet kwenza ukusebenzisana phakathi kwabahlinzeki kube lula. Ababhalisile bangakhetha ihadiwe enikeza amazinga edatha afanele futhi ikhule njengoba izidingo zabo zanda ngaphandle kokudinga ukulungisa kabusha inethiwekhi. Kodwa-ke, amanethiwekhi e-AON adinga okungenani i-switch aggregator eyodwa ngobhalisile ngamunye.
Iyini inethiwekhi ye-PON?
Ngokungafani namanethiwekhi e-AON, i-PON iyisakhiwo senethiwekhi esisuka kumaphuzu amaningi esisebenzisa ama-splitter angasebenzi ukuhlukanisa nokuqoqa amasignali optical. Ama-splitter e-fibre avumela inethiwekhi ye-PON ukuthi ikhonze ababhalisile abaningi ku-fiber eyodwa ngaphandle kwesidingo sokufaka ama-fiber ahlukene phakathi kwehabhu nomsebenzisi wokugcina.
Njengoba igama lisho, amanethiwekhi e-PON awafaki imishini yokushintsha enenjini kanye nama-fiber bundle abelana ngezingxenye zenethiwekhi. Imishini esebenzayo idingeka kuphela emthonjeni naseziphethweni zokwamukela zesignali.
Kunethiwekhi evamile ye-PON, i-PLC splitter iyisici esiyinhloko. Ama-fibre optic taps ahlanganisa amasignali amaningi e-optical abe yi-output eyodwa, noma ama-fibre optic taps athatha okokufaka okukodwa kwe-optical bese ekusabalalisa kuma-output amaningi ngamanye. Lawa ma-taps e-PON aqondene nezinhlangothi ezimbili. Ukuze kucace, amasignali e-fiber optic angathunyelwa phansi kusuka ehhovisi eliphakathi ukuze asakazwe kubo bonke ababhalisile. Amasignali avela kubabhalisile angathunyelwa phezulu futhi ahlanganiswe abe yi-fiber eyodwa ukuxhumana nehhovisi eliphakathi.
Amanethiwekhi e-AON vs PON: Umehluko kanye Nezinketho
Amanethiwekhi e-PON kanye ne-AON akha umgogodla we-fiber optic wesistimu ye-FTTH, okuvumela abantu namabhizinisi ukuthi bafinyelele i-inthanethi. Ngaphambi kokukhetha i-PON noma i-AON, kubalulekile ukuqonda umehluko phakathi kwawo.
Ukusatshalaliswa Kwesignali
Uma kukhulunywa ngamanethiwekhi e-AON kanye ne-PON, umehluko omkhulu phakathi kwawo yindlela isignali ye-optical esatshalaliswa ngayo kumakhasimende ngamunye ohlelweni lwe-FTTH. Kuhlelo lwe-AON, ababhalisile banezinqwaba ze-fiber ezinikezelwe, ezibavumela ukuthi bakwazi ukufinyelela ku-bandwidth efanayo, kunokuba kube yi-bandwidth eyabiwe. Kunethiwekhi ye-PON, ababhalisile babelana ngengxenye ye-fiber bundle yenethiwekhi ku-PON. Ngenxa yalokho, abantu abasebenzisa i-PON bangathola nokuthi uhlelo lwabo luhamba kancane ngoba bonke abasebenzisi babelana nge-bandwidth efanayo. Uma kuvela inkinga ngaphakathi kohlelo lwe-PON, kungaba nzima ukuthola umthombo wenkinga.
Izindleko
Izindleko ezinkulu eziqhubekayo kunethiwekhi yizindleko zokusebenzisa imishini nokulungisa. I-PON isebenzisa amadivayisi angasebenzi adinga ukulungiswa okuncane futhi angenawo ugesi kunenethiwekhi ye-AON, okuyinethiwekhi esebenzayo. Ngakho-ke i-PON ishibhile kune-AON.
Ibanga Lokumbozwa kanye Nezicelo
I-AON ingamboza ibanga elingafika kumakhilomitha angu-90, kanti i-PON ivame ukukhawulelwa yizintambo zekhebula le-fiber optic ezingafika kumakhilomitha angu-20 ubude. Lokhu kusho ukuthi abasebenzisi be-PON kumele babe seduze nendawo nesignali yokuqala.
Ngaphezu kwalokho, uma kuhlotshaniswa nohlelo lokusebenza noma isevisi ethile, kudingeka kucatshangelwe ezinye izici eziningana. Isibonelo, uma izinsizakalo ze-RF nevidiyo zizosetshenziswa, khona-ke i-PON ngokuvamile iyona kuphela ikhambi elisebenzayo. Kodwa-ke, uma zonke izinsizakalo zisekelwe ku-Internet Protocol, khona-ke i-PON noma i-AON ingafaneleka. Uma kuhileleke amabanga amade futhi ukuhlinzeka ngamandla nokupholisa izingxenye ezisebenzayo ensimini kungaba yinkinga, khona-ke i-PON ingaba yisinqumo esingcono kakhulu. Noma, uma ikhasimende eliqondiwe lingelokuhweba noma iphrojekthi ihilela amayunithi amaningi okuhlala, khona-ke inethiwekhi ye-AON ingafaneleka kakhulu.
Amanethiwekhi e-AON vs. PON: Yimuphi u-FTTH owuthandayo?
Uma ukhetha phakathi kwe-PON noma i-AON, kubalulekile ukucabangela ukuthi yiziphi izinsizakalo ezizolethwa ngenethiwekhi, i-topology yenethiwekhi iyonke, nokuthi obani amakhasimende ayinhloko. Abaqhubi abaningi basebenzise ingxube yamanethiwekhi womabili ezimweni ezahlukene. Kodwa-ke, njengoba isidingo sokusebenzisana kwenethiwekhi kanye nokukhula kwayo kuqhubeka nokukhula, izakhiwo zenethiwekhi zivame ukuvumela noma iyiphi i-fiber ukuthi isetshenziswe ngokushintshana kuzinhlelo zokusebenza ze-PON noma ze-AON ukuze kuhlangatshezwane nezidingo zezidingo zesikhathi esizayo.
Isikhathi sokuthunyelwe: Okthoba-24-2024