EPON bụ teknụzụ PON dabere na Ethernet.Ọ na-eji teknụzụ PON na oyi akwa anụ ahụ, usoro Ethernet na oyi akwa njikọ data, ịnweta Ethernet site na iji PON topology, na ịnweta ọrụ zuru oke na data, olu, na vidiyo site na iji eriri anya.
Nkọwa ngwaahịa EPON:
EPON na-ebunye ma nata akara n'otu eriri.A na-akpọ usoro a otu usoro nnyefe bidirectional fiber.N'iji teknụzụ multiplexing nkewa nke WDM, otu-fiber bidirectional nnyefe na-enweta ya na ogologo wavelength dị iche iche (downstream 1490nm, upstream 1310nm), a na-ebufe iyi data elu na nke ala n'otu oge n'otu eriri na-enweghị emetụta ibe ya.
N'otu oge ahụ, 1000 BASE-PX-10 U na-akọwa / D na 1000 BASE-PX-20 U / D PON oghere anya na-akwado kacha anya nnyefe nke 10 km na 20 km n'otu n'otu.EPON nwere ike inye 1.25 Gbit / s elu. na ala bandwit.Ọ bụ netwọk ngwa anya na-agafe agafe dabere na Ethernet.The OLT nakweere Ethernet encapsulation na-ebufe ihe Ethernet etiti Ọdịdị.Ya mere, EPON dabere na usoro etiti 802.3.
Dị ka nkwekọrịta nke IEEE802.3ah-2004: ikike nnyefe nke akụkụ OLT karịrị 2dBm, na nnabata nnabata bụ <-27dBm;n'ihi na ike nnyefe ONU karịrị -1dBm, nnabata nnabata bụ <-24dBm, ọnwụ nke njikọ ngwa anya dum ruru <24dB, ruo <23.5dB.Ọnwụ nke EPON elu 1310nm na mgbada 1490nm wavelengths na G.652 fiber bụ ihe dịka 0.3dB / km.Na nchịkọta, mmefu ego ike bụ ihe kacha mkpa maka EPON dị anya.
Njirimara ngwaahịa EPON
①1.25Gbps symmetric otu eriri bidirectional data njikọ
② 3.3V voltaji arụ ọrụ
③DDM dijitalụ nchoputa nlekota oru
④ Mgbochi mgbochi elektrọnik, yana nchedo mgbochi static
⑤ Soro IEC-60825 Klas 1 ọkọlọtọ nchekwa laser
⑥ Commercial na-arụ ọrụ okpomọkụ: 0 ℃ ~ 70 ℃
Ngwa teknụzụ EPON
① Maka ndị ọrụ ọha, enwere ike iji ụdị ngwa dị ka FTTH na FTTB / C / Cab.
② Maka ndị na-azụ ahịa, ụdị mmejuputa dị iche iche dị ka FTTO, FTTB, ma ọ bụ FTTC nwere ike ịnakwere dịka mkpa azụmahịa dị iche iche na ọnụ ọgụgụ onye ọrụ si dị.
③ "Global Eye" na ngwa ndị ọzọ na-achọ nnukwu bandwidth dị elu (karịsịa bandwit elu) nwere ike iji EPON dịka ụzọ ịnweta.PON na-edochi mgba ọkụ mbụ Layer 2 / Layer 3 na ngwọta netwọkụ analog, ebe ọ na-echekwa ọtụtụ transceivers fiber, na ọ chọghị akụrụngwa transceiver ngwa anya vidiyo.
④ N'ihe banyere ụkọ akụrụngwa fiber optic, dị ka ọrụ ime obodo, enwere ike iji atụmatụ nkewa anya na-ekewapụta ọtụtụ ọkwa na ike nkewa na-enweghị nha, ya bụ, ike adịghị nhata mgbe enwere naanị otu ma ọ bụ ọtụtụ cores The ngwa anya splitters na-agbakọta n'ókè site n'ókè.
EPON na-ezute oke bandwidth chọrọ nke ndị ahịa netwọkụ ịnweta, ma nwee ike kesaa bandwidth na-agbanwe agbanwe dịka mgbanwe dị na mkpa onye ọrụ si dị, na-eme ka ndụ ndị bi n'ime obodo dịkwuo mma, dị mma ma dị mma.