ʻO ka PON (Passive Optical Network) kahi pūnaewele ʻike passive, ʻo ia hoʻi ʻo ka ODN (optical distribution network) ma waena o ka OLT (optical line terminal) a me ka ONU (optical network unit) ʻaʻohe mea hana, a hoʻohana wale i nā fiber optical. a me nā ʻāpana passive.Hoʻohana nui ʻo PON i ka ʻōnaehana pūnaewele point-to-multipoint, ʻo ia ka ʻenehana nui e ʻike ai i ka FTTB/FTTH.
Loaʻa i ka ʻenehana PON ka nui o nā ʻike, a hoʻonui mau ʻia.ʻO ka hoʻomohala ʻana o ka ʻenehana xPON mai APON, BPON, a ma hope GPON a me EPON.ʻO kēia nā ʻenehana o nā ʻano hoʻoili like ʻole a me nā kūlana hoʻouna i kūkulu ʻia i nā manawa like ʻole.
He aha ka EPON?
ʻO EPON (Ethernet Passive Optical Network) he Ethernet passive optical network.Hoʻokumu ʻia ʻo EPON ma ka ʻenehana PON o Ethernet, kahi e hui pū ai i nā pono o ka ʻenehana PON a me ka ʻenehana Ethernet.Hoʻohana ia i ka hoʻolālā point-to-multipoint a me ka hāʻawi ʻana i ka fiber optical passive e hāʻawi i nā lawelawe he nui ma luna o Ethernet.Ma muli o ka hoʻokele waiwai a me ka maikaʻi o ka EPON, ʻo ia ke ala kamaʻilio maikaʻi loa e ʻike ai i nā "ʻekolu pūnaewele i hoʻokahi" a me "mile hope".
He aha ka GPON?
ʻO GPON (Gigabit-Capable Passive Optical Network) he Gigabit passive optical network a i ʻole Gigabit passive optical network.ʻOkoʻa nā kūlana i hāpai ʻia e EPON a me GPON.Hiki ke ʻōlelo ʻia he ʻoi aku ka holomua o ka GPON a hiki ke hoʻouna i nā bandwidth hou aʻe, a hiki ke lawe mai i nā mea hoʻohana hou aʻe ma mua o EPON.ʻOiai ʻoi aku ka maikaʻi o ka GPON ma mua o EPON ma nā kumukūʻai kiʻekiʻe a me nā lawelawe he nui, ʻoi aku ka paʻakikī o ka ʻenehana o GPON a ʻoi aku kona kumukūʻai ma mua o EPON.No laila, i kēia manawa, ʻo EPON a me GPON nā ʻenehana me nā noi ākea ākea PON.ʻO ka ʻenehana e koho ai e pili ana i ke kumukūʻai o ke komo ʻana i ka fiber optical a me nā koi ʻoihana.E ʻoi aku ka maikaʻi o ka GPON no nā mea kūʻai aku me ka bandwidth kiʻekiʻe, multi-service, QoS a me nā koi palekana a me ka ʻenehana ATM e like me ka iwi kuamoʻo.ʻO ka hoʻomohala e hiki mai ana ka bandwidth kiʻekiʻe.No ka laʻana, ua hoʻomohala ka ʻenehana EPON / GPON i 10 G EPON / 10 G GPON, a e hoʻomaikaʻi hou ʻia ka bandwidth.
Ke hoʻomau nei ka hoʻonui ʻana i ka mana o nā mea hoʻolako pūnaewele, pono e hoʻonui ʻia ka versatility o nā ʻoihana e hoʻokō i kēia koi ulu.ʻO ka Fiber-to-the-home (FTTH) passive optical network (PON) ʻo ka ʻenehana i hoʻohana nui ʻia i kēia manawa.ʻO nā mea maikaʻi o ka ʻenehana PON ʻo ia ka mea hiki ke hōʻemi i ka noho ʻana o nā kumu waiwai fiber optical backbone a mālama i ke kālā;maʻalahi ka hoʻolālā pūnaewele a ikaika ka hiki ke hoʻonui;he haʻahaʻa ka haʻahaʻa haʻahaʻa o nā hāmeʻa passive optical, a ʻaʻole maʻalahi ke keʻakeʻa ʻia e ke kaiapuni o waho;a ikaika ka hiki ke kākoʻo ʻoihana.