Ua hoʻopiʻi paha ʻoe iā ʻoe iho, "He pūnaewele weliweli kēia," ke lohi kāu pili pūnaewele? I kēia lā, e kamaʻilio mākou e pili ana i ka Passive Optical Network (PON). ʻAʻole ia ka pūnaewele "ʻino" āu e manaʻo ai, akā ʻo ka ʻohana superhero o ka honua pūnaewele: PON.
1. PON, ka "Superhero" o ka Honua Pūnaewele
PONe pili ana i kahi pūnaewele fiber optic e hoʻohana ana i kahi topology point-to-multipoint a me nā splitters optical e hoʻouna i ka ʻikepili mai kahi wahi hoʻouna hoʻokahi i nā mea hoʻohana he nui. Loaʻa iā ia kahi kikowaena laina opitika (OLT), kahi ʻāpana kikowaena optical (ONU), a me kahi pūnaewele hoʻolaha optical (ODN). Ke hoʻohana nei ʻo PON i kahi ʻoihana ʻike ʻike holoʻokoʻa holoʻokoʻa a he P2MP (Point to Multiple Point). Hāʻawi ia i nā pōmaikaʻi e like me ka mālama ʻana i nā kumuwaiwai fiber, ʻaʻole koi i ka mana no ka ODN, hoʻomaʻamaʻa i ke komo ʻana o ka mea hoʻohana, a me ke kākoʻo ʻana i ke komo ʻana i nā lawelawe lehulehu. ʻO ia kahi ʻenehana ākea fiber optic e hoʻolaha ʻia nei e nā mea hana.
Ua like ka PON me ka "Ant-Man" o ka honua pūnaewele: paʻa akā ikaika loa. Hoʻohana ʻo ia i ka fiber optical ma ke ʻano o ka hoʻouna ʻana a hāʻawi i nā hōʻailona optical mai ke keʻena kikowaena i nā mea hoʻohana he nui ma o nā polokalamu passive, e hiki ai i nā lawelawe ākea ākea kiʻekiʻe, kūpono, a haʻahaʻa.
E noʻonoʻo inā he superhero ko ka honua pūnaewele, ʻo PON ka Superman understated. ʻAʻole ia e koi i ka mana a hiki ke "lele" i ka honua pūnaewele, e lawe mai ana i ka ʻike pūnaewele māmā i nā tausani o nā hale.
2. Nā Pono Koʻikoʻi o PON
ʻO kekahi o nā "mana nui" o PON ʻo ia ka māmā māmā. Ke hoʻohālikelike ʻia me nā ʻupena uea keleawe kuʻuna, hoʻohana ʻo PON i ka fiber optical, e hopena i ka wikiwiki o ka hoʻouna ʻana.
E noʻonoʻo i ka hoʻoiho ʻana i kahi kiʻiʻoniʻoni ma ka home, a ʻike koke ʻia ma kāu hāmeʻa e like me ke kilokilo. Eia kekahi, kū'ē ka fiber optical i ka uila a me ka hoʻopili electromagnetic, a ʻaʻole kūlike kona kūpaʻa.
3. GPON & EPON
ʻO nā lālā kaulana ʻelua o ka ʻohana ʻenehana PON ʻo GPON a me EPON.
GPON: Ka Mana o ka ʻohana PON
GPON, e kū ana no Gigabit-Capable Passive Optical Network,ʻo ia ka mana o kaʻohana PON. Me ka wikiwiki o ka downlink a hiki i ka 2.5 Gbps a me ka wikiwiki o ka uplink o 1.25 Gbps, hāʻawi ia i ka wikiwiki kiʻekiʻe, ka mana kiʻekiʻe, ka leo, a me nā lawelawe wikiō i nā hale a me nā ʻoihana. E noʻonoʻo e hoʻoiho i kahi kiʻiʻoniʻoni ma ka home. ʻAe ʻo GPON iā ʻoe e ʻike i nā hoʻoiho koke. Eia kekahi, ʻoi aku ka maʻalahi o nā ʻano asymmetric o GPON i ka mākeke lawelawe data broadband
EPON: Ka Hoku Wikiwiki o ka Ohana PON
EPON, pōkole no Ethernet Passive Optical Network, ʻo ia ka hōkū wikiwiki o ka ʻohana PON. Me ka symmetrical 1.25 Gbps upstream and downstream speeds, kākoʻo maikaʻi ia i nā mea hoʻohana me nā pono hoʻouka ʻikepili nui. ʻO ka symmetry o EPON ka mea i koho maikaʻi loa no nā ʻoihana a me nā mea hana maʻiʻo me nā koi hoʻouka nui.
ʻO GPON a me EPON nā ʻenehana PON ʻelua, ʻokoʻa i nā kikoʻī ʻenehana, nā helu hoʻouna, nā ʻano hana, a me nā ʻano encapsulation. Loaʻa i kēlā me kēia GPON a me EPON ko lākou mau pono ponoʻī, a ʻo ke koho e pili ana i nā koi noi kikoʻī, ka waihona kālā, a me ka hoʻolālā pūnaewele.
Me ka holomua o ka ʻenehana, ke emi nei ka ʻokoʻa ma waena o nā mea ʻelua. Nā ʻenehana hou, e like me XG-PON (10-Gigabit-Capable Passive Optical Network) aXGS-PON(10-Gigabit-Capable Symmetric Passive Optical Network), hāʻawi i nā wikiwiki kiʻekiʻe a hoʻomaikaʻi i ka hana.
Nā noi o ka ʻenehana PON
Loaʻa i ka ʻenehana PON kahi ākea o nā noi:
Loaʻa i ka home broadband: Hāʻawi i nā lawelawe pūnaewele kiʻekiʻe i nā mea hoʻohana home, kākoʻo i ke kahe wikiō wehewehe kiʻekiʻe, pāʻani pūnaewele, a me nā mea hou aku.
Nā pūnaewele ʻoihana: Hāʻawi i nā ʻoihana me nā pilina pūnaewele paʻa, e kākoʻo ana i ka hoʻouna ʻana i ka ʻikepili nui a me nā lawelawe ʻikepili kapua.
ʻO PON kahi "mea kīʻaha akamai." No ka mea he passive, hoʻemi nui ʻia nā kumukūʻai mālama. ʻAʻole pono nā mea hana e hoʻokomo a mālama i nā lako mana no kēlā me kēia mea hoʻohana, e mālama ana i kahi kālā nui. Eia kekahi, maʻalahi loa ka hoʻonui ʻana i ka pūnaewele PON. ʻAʻole koi ʻia ka ʻeli ʻana; ʻO ka hoʻomaikaʻi wale ʻana i nā mea hana ma ka node waena e hōʻoluʻolu i ka pūnaewele holoʻokoʻa.
Nā kūlanakauhale akamai: Ma ke kūkulu ʻana i ke kūlanakauhale akamai, hiki i ka ʻenehana PON ke hoʻohui i nā mea ʻike like ʻole a me nā lako nānā, e hiki ai i ka halihali naʻauao, nā kukui akamai, a me nā ʻenehana ʻē aʻe.
Ka manawa hoʻouna: ʻAukake-14-2025