PON (Passive Optical Network) pụtara na ọ nweghị akụrụngwa ọ bụla na-arụ ọrụ ma na-eji naanị Optical Fiber na Pasive Components n'etiti OLT (Opikal Line Terminal) na ONU (Optikal Network Unit).Na PON na teknụzụ bụ isi iji mejuputa FTTB / FTTH, bụ nke na-anabata isi na nhazi netwọkụ ọtụtụ.
Enwere otutu ọdịnaya na teknụzụ PON, teknụzụ PON na-emegharị ma na-emelite mgbe niile.Teknụzụ XPON mepụtara site na APON, BPON, na emechaa EPON na GPON.Enwere ụdị nnyefe dị iche iche na ụkpụrụ nnyefe emepụtara n'oge dị iche iche.
Kedu ihe bụ APON?
Na njedebe nke 1990s, ITU ( International Telecommunication Union ) buru ụzọ tụọ APON site na iji Asynchronous Transfer Mode (ATM) maka nkwurịta okwu ngwugwu.APON na-eji nke Centralized na statistical multiplexing nke ATM, jikọtara ya na nkekọrịta ọrụ nke passive divider on optical fiber and Optical Line Terminal, nke na-eme ka ọnụ ahịa dị ala site na 20% ~ 40% karịa usoro PDH / SDH omenala dabere na sekit. ịgbanwee.
Kedu ihe bụ BPON?
Site na mmepe ngwa ngwa nke teknụzụ Ethernet, APON anaghịzi eji ya eme ihe.N'oge a, a tụpụtara echiche Broadband Passive Optical Network (BPON).BPON bụ nkwalite ọkọlọtọ APON, nke a na-akpọbu APON, mana emesịa gbanwee ka ọ bụrụ BPON maka ebumnuche dị iche iche.BPON gbadoro ụkwụ na usoro ATM, yana ọsọ mgbago elu na mgbada nke 155Mbpas na 622Mbps n'otu n'otu.N'otu oge ahụ, Ọ na-agbakwụnye oke bandwidth ike, nchekwa na ọrụ ndị ọzọ, ma nwee ike ịnye ohere Ethernet, nnyefe vidiyo, Lines mgbazinye dị elu na ọrụ ndị ọzọ.
Kedu ihe bụ EPON?
N'ihi na elu nkenye ego na-eri nke BPON, ọ e mechara dochie ya na ndị ọzọ na-eri-irè na ngwa ngwa EPON.EPON (Ethernet Passive Optical Network) bụ Ethernet Passive Optical Network.EPON PON technology dabeere na Ethernet integrates uru nke PON technology na Teknụzụ Ethernet, na-anabata ihe owuwu Point ruo Multi-point, transive fiber optical nnyefe,
N'ihi na elu nkenye ego na-eri nke BPON, ọ e mechara dochie ya na ndị ọzọ na-eri-irè na ngwa ngwa EPON.EPON (Ethernet Passive Optical Network) bụ Ethernet Passive Optical Network.EPON PON technology dabeere na Ethernet integrates uru nke PON technology na Ethernet technology, adopts Point to- Multi-point structure, passive optical fiber nnyefe, na-enye ọrụ dị iche iche na Ethernet.N'ihi na EPON bụ akụ na ụba na ịrụ ọrụ nke ọma na-ebugharị, ọ bụ ụzọ kasị dị irè iji nweta "netwọọdụ atọ n'otu" na nkwukọrịta “mile ikpeazụ”.
Kedu ihe bụ GPON?
GPON (Gigabit-Capable Passive Optical Network) bụ Gigabit Passive Optical Network ma ọ bụ Gigabit Passive Optical Network.EPON na GPON na-eji ụkpụrụ dị iche iche, na GPON na-arụ ụka na ọ dị elu karị, na-enwe ike ịnyefe bandwidth ma na-ebu ndị ọrụ karịa EPON. Ọ bụ ezie na GPON nwere. uru dị na nnukwu ọsọ na ọtụtụ ọrụ ma e jiri ya tụnyere EPON, nkà na ụzụ GPON dị mgbagwoju anya na ọnụ ahịa ya dị elu karịa nke EPON. Ya mere, ugbu a, EPON na GPON bụ teknụzụ ndị a na-ejikarị eme ihe maka ịnweta brọdband PON, na nhọrọ nke. nkà na ụzụ na-adabere karịa na ọnụahịa nke ịnweta eriri anya na ihe ndị chọrọ azụmahịa.GPON ga-adabara ndị ahịa nwere nnukwu bandwidth, ọtụtụ ọrụ, QoS na nchekwa chọrọ, na teknụzụ ATM dị ka ọkpụkpụ azụ. Mmepe n'ọdịnihu dị elu bandwidth, dịka ọmụmaatụ. , EPON/GPON nkà na ụzụ na-emepụta 10 G EPON / 10 G GPON, bandwit ga-akawanye mma.
Ịmara maka APON,BPON,EPON,GPON
Dị ka ikike na-achọ ndị na-enye netwọk na-aga n'ihu na-abawanye, ọnụọgụ nke ịnweta netwọk ga-agbasawanye iji gboo mkpa a na-eto eto. Fiber to the home (FTTH) passive optical network (PON) ohere netwọkụ anya bụ ihe a na-ejikarị eme ihe na teknụzụ. Uru nke nkà na ụzụ PON bụ na ọ nwere ike belata iji ihe onwunwe azụ azụ azụ ma chekwaa ego. Usoro netwọk na-agbanwe agbanwe, ike siri ike ịgbasa; Ngwa ngwa anya na-agafe agafe nwere ọnụego ọdịda dị ala ma ọ dịghị mfe ịbanye na gburugburu ebe obibi. Nkwado azụmahịa siri ike. ike, wdg.