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G.652D vs G.657A2 muka Aratau Kotahi: Ngā Rerekētanga Matua, te Whakataurite Mahi me te Aratohu Kōwhiri Taupānga
2026-07-31
Mā te whiriwhiri hē i te muka aratau-kotahi ka nui rawa te ngaronga o te whatu, ka kore e whakaaetia te kaupapa, ka kore e hiahiatia te mahi anō, me te maumauria o te haumitanga whakapaipai. Mō ngā tekau tau, G.652D me G.657A2 kua kaha te whakahaere i ngā kaupapa muka whatu o te ao, mai i ngā whatunga tuara waea tawhiti, ngā hononga muka metro, ngā taura pokapū raraunga ki te whakatinanatanga muka FTTH ki te kāinga. He maha ngā kaiwhakahaere hoko, ngā miihini mara me ngā kaihoahoa whatunga e pā tonu ana ki te pōhēhētanga kotahi: Āhea tātou me whakatinana i te muka G.652D? He aha ngā āhuatanga e hiahia ana kia kore e piko te muka G.657A2? Ka taea te hono i ēnei momo muka e rua ki roto i ngā whatunga ranu?
Ko te nuinga o ngā tuhinga ipurangi e whakarārangi ana i ngā tawhā hangarau taketake, engari kāore e aro ki ngā āhuatanga uaua o te hangarau: te ngoikore o te tohu i puta mai i te piko piri, te nui rawa o te utu nā te nui rawa o ngā whakaritenga, ngā mōrearea hototahi i roto i ngā hononga muka whakauru, me te hoahoa taura hē e arahi ana ki te kore pumau o te whatunga mō te wā roa. E whakataurite ana tēnei aratohu whānui i a G.652D me G.657A2 i runga i ngā paerewa ITU-T mana, te wheako hanga papa, te utu katoa o te mana (TCO), me ngā taiao whakatinanatanga tika, e āwhina ana i ngā kaimahi ahumahi ki te whakatau i ngā kōwhiringa muka e ahu mai ana i ngā raraunga me te karo i ngā hapa hangarau utu nui.
1. Whakamāramatanga Taketake me te Papamuri Paerewa ITU-T
1.1 ITU-T G.652D muka
Ko te ITU-T G.652D he muka aratau kotahi marara kore-kore, he iti-te-tihi wai. Koinei te muka aratau kotahi tuku iho e whakamahia whānuitia ana puta noa i te ao, e whakapūmautia ana i raro i te taunakitanga a te ITU-T G.652. Ka whakakorea e te G.652D te tihi mimiti wai tata ki te 1383 nm, ka taea ai te tuku pumau puta noa i ngā roopu whakawhitiwhiti O, S, C, L katoa (1260 nm ~ 1625 nm). Mai i tōna hokohoko, kua noho ko G.652D te muka paerewa mō ngā taura hiko o waho, ngā taura tanumia tika, me ngā taura tuara o te rangi. He pai te tauwehenga whakaitiiti pumau, he hangarau hanga pakari, he hototahi whānui ki ngā taputapu tuku whatu tawhito katoa, me te utu papatipu whakataetae. Heoi, ko tōna herenga matua kei roto i te aro ki te ngaronga piko-rahi me te piko-iti.
1.2 ITU-T G.657A2 muka
Nō te whānau muka aratau-kotahi G.657 o te G.657A2, he mea e tautuhia ana e te ITU-T. He meka hangarau nui tēnei: E tino tutuki ana a G.657A2 i ngā whakaritenga whatu katoa o G.652DAra, ka riro i a G.657A2 ngā tohu mahi tuku katoa o G.652D, me te tāpiri atu i te kaha ārai-piko kua tino whakapaitia. E rua ngā wāhanga o te paerewa G.657 mō ngā muka ātete-piko: Kāwai A (hototahi ki a G.652D) me Kāwai B (kāore e tino pāngia e te piko). Ka tautoko a G.657A2 i te iti rawa o te radius piko o te 7.5 mm, he pai ake i a G.657A1 (10 mm te iti rawa o te radius piko). Ka arotauhia e ngā kaihanga te kōtaha taupū whakaata muka hei hopu i te kaha mārama ki roto i te matua, hei ārai i te turuturu mārama ina tino piko te muka. Nā tēnei hoahoa ka waiho a G.657A2 hei muka pai mō ngā waea ā-whare iti, ngā taura taka FTTH me ngā taura pokapū raraunga kiato teitei.
2. Whakataurite i ngā Tawhā Hangarau Matua
E whakaatu ana te ripanga i raro nei i ngā whakatakotoranga matua e pā tika ana ki te mahi hangarau:
| Tawhā | G.652D | G.657A2 | Pānga Whaihua |
|---|---|---|---|
| Te iti rawa o te pūtoro piko kua tohua | 30 mm (te āhua whakamātautau paerewa) | 7.5 mm | Ka nui te mate tāpiri ka puta mai i a G.652D ina pikohia i raro i te 30 mm; ka iti tonu te mate o G.657A2 ina pikohia kia koi. |
| MFD @1550 nm | 9.2 ±0.4 μm | 8.8~9.2 µm | Ko te rerekētanga iti o te MFD ka hua ake he ngaronga honohono iti i roto i ngā hononga ranu |
| Ngaru roa tapahi taura | ≤1260 nm | ≤1260 nm | He tino ōrite, e whakarite ana i te mahi aratau kotahi i roto i ngā roopu whakawhitiwhiti katoa |
| Te whakaiti noa i te taumahatanga @1550nm | ≤0.20 dB/km | ≤0.21 dB/km | Tata rite tonu te mahi tuku tawhiti |
| Te ngaronga piko-rahi (1550nm) | Te mate nui i raro i te piko piri | He iti rawa te mate tāpiri i te piko 7.5mm | Te āputa mahi nui rawa atu i waenga i ngā momo muka e rua |
| Tauwehenga PMD | ≤0.2 ps/√km | ≤0.2 ps/√km | Tautoko i te tuku 10G, 40G, 100G mō ngā muka e rua |
| Te Kapinga o te Whānuitanga o te Ipurangi | Rōpū O/S/C/L | Rōpū O/S/C/L | Te wātea o te whānuitanga ōrite |
He mea tika kia whakatikahia tētahi hē whānui o te ahumahi: EHARA a G.657A2 i te "pai ake i a G.652D i ngā āhuatanga katoa". Nā tōna arotautanga hanganga mō te ātete piko ka iti te utu hanga. Kāore e tika ana te whakamahi i a G.657A2 ki ngā hononga tuara tika tawhiti me te iti o ngā piko, ā, ka piki ake te utu o te kaupapa.
3. Ngā Rerekētanga Matua: Ngā Wāhi Mamae i Tūtakihia i roto i ngā Kaupapa Tūturu
3.1 Te Mahi Ārai-Pīkoki (Te Painga Tino Motuhake o G.657A2)
Ko te ngaronga piko-macro te tino take o te rahunga o ngā kaupapa muka whatu. Ina pēhia te muka G.652D ki roto i ngā kokonga kuiti, ngā paepae taura iti, ngā pouaka tohatoha whatu kuiti, ngā hurihanga koi o te paipa hiko, ka turuturu te kaha mārama mai i te matua muka, ka piki ake te ngoikore o te whatu. I ngā wā tino kino, ka whakaatuhia e te whakamātautau OTDR ngā mate rerekē, ka hua ake te kore whakaae o te kaupapa.
Ko ngā paerewa hanga e hiahia ana kia ≥30 mm te whānui piko tuturu o te G.652D, kia ≥15 mm te whānui piko hanga rangitahi. I roto i te maha o ngā whakahoutanga o roto, o ngā āhuatanga FTTH whare noho, he uaua ki te whakatutuki i tēnei whakaritenga. He maha ngā wā ka kohia e ngā kaihanga te muka ki roto i ngā paipa pakitara whaiti, ka hangaia he koiri piri ki roto i ngā pouaka ODF e mau ana ki te pakitara. Mā te whakamahi i te G.652D i roto i ēnei taiao ka puta he hapa whatunga huna ka puta noa i ngā marama i muri i te otinga.
He rerekē, ka taea e G.657A2 te tu atu ki te piko auau i te radius 7.5 mm me te ngaronga tāpiri kua whakahaeretia. He nui ake te manawanui hanga a ngā tohunga hangarau mara. Kāore e tūpono ana te hekenga o te tohu i te ara uaua, ngā hurihanga maha, me te takai kāpata kiato. Ka tino whakaitihia e tēnei ngā utu rapurongoā i muri i te tāutanga.
3.2 Te Tawhiti Tuku me te Whai Hua mō te Haerenga Roa
I roto i ngā whatunga tuara o waho tawhiti (te hononga matua o te tāone-ki-te-tāone, ngā hononga matua o te metro, te roa neke atu i te 20 km), ko G.652D tonu te whiringa matua. He pai ake te mahi whakaitiiti, ā, ka whakaitihia te utu taura mō ia kiromita e te hanga papatipu. Nā te mea ka tāutahia ngā taura tuara ki roto i ngā awaawa, i ngā huarahi rererangi rānei me ngā piko ngawari kua whakaritea, kāore he take mō ngā muka kore-piko.
Ka taea e G.657A2 te tautoko i te tuku tawhiti, engari ko te utu muka tāpiri ka kore e whai hua ngā tahua kaupapa. He maha ngā kaihoko e whakahou hē ana i ngā taura tuara katoa ki te G.657A2, ka moumou moni koretake.
3.3 Te Hototahi me te Hononga i waenganui i a G.652D me G.657A2
He pātai e pātaihia pinepinetia ana: Ka taea e G.652D te hono me G.657A2 i roto i te hononga whatu kotahi? Whakautu: Ae, e whakaaetia ana te honohono ranu, engari me whakahaere e ngā kaihangarau te ngaronga o te honohono. Nā te iti o ngā rerekētanga o te diameter o te mara aratau, ka puta pea te ngaronga whakaurunga neke atu i te 0.3dB mēnā he hē ngā tawhā honohono. Ngā taunakitanga mahi pai rawa atu:
- Whakamahia ngā hononga honohono me ngā kōtaha honohono muka G.657 motuhake;
- Whakamātautauhia te OTDR e rua ngā ahunga i te 1310nm me te 1550nm i muri i te honohono;
- Āta karohia ngā pūwāhi honohono maha i waenganui i a G.652D me G.657A2 i runga i te hononga kotahi.
He mea noa te whakatakotoranga ranu i roto i ngā whatunga urunga: G.652D mō ngā taura whāngai o waho, kātahi ka taka ngā taura G.657A2 mai i ngā pūwāhi tohatoha ki ngā whare o te kiritaki. Ka whakatauritehia e tēnei hoahoa ranu te utu me te mahi piko, e whakamahia whānuitia ana e ngā kaiwhakahaere waea o te ao.
3.4 Te Utu me te Ōhanga Kaupapa Katoa
He nui ake te utu o te muka mata G.657A2 ki te whakaritea ki te G.652D paerewa. Mō ngā kaupapa tuara o waho nui me ngā mano kiromita muka, ka nui haere te rerekētanga utu.
Heoi, kāore e taea e te tātari utu te arotahi noa ki te utu muka mata. Me aromatawai tātou i te utu katoa o te mana pupuri:
- Mena ka whakamahia ki roto i ngā taiao piko-maha o roto: Ka karohia e G.657A2 te mahi anō, ka whakaitihia te mōrearea o te rahunga hanga, ka whakaitihia ngā whakapaunga whakahaere me te tiaki mō te wā roa. He tika te utu muka teitei ake i mua.
- Ngā ara pūtu o waho tika: Ka tukuna e G.652D te mahi tuku ōrite me te iti ake o te whakapaunga rauemi.
4. Ngā horopaki tono e taunakitia ana
Āhea te Kōwhiri i te muka G.652D
- Ngā taura tuara waea tawhiti, ngā taura whāngai metro (ngā paipa hiko, tanumia tika, ngā taura GYTA ā-rangi, GYTS, GYFTY);
- Ngā hononga waea whānui tuawhenua, te tuara o waho o te kāmpus, ngā hononga muka tawhiti mō te aroturuki huarahi;
- Ngā kaupapa he ara tika, he awaawa taura paerewa, he wāhi piko rawaka;
- Ngā kaupapa hanganga nui e pāngia ana e te tahua rauemi.
Āhea te Kōwhiri i te muka G.657A2
- Ngā taura taka FTTH, ngā taura whakaara o roto, ngā waea kāinga, ngā whatunga tohatoha whatu whare noho;
- Ngā taura kāpata kiato-teitei o te pokapū raraunga, ngā taura papaki, ngā waea hanganga poutū me te whakapae;
- Ngā kaupapa whakahoutanga whare he whaiti ngā awaawa, he maha ngā kokonga, he iti te wāhi tāutanga;
- Te aroturukitanga haumarutanga i roto i ngā whare, ngā taura haere ararewa, ngā waea ā-roto mō ngā taputapu ahumahi;
- Ngā huihuinga muka kua oti te whakamutu, ngā pouaka pito whatu kiato e hiahia ana kia takai muka matotoru.
5. Ngā Mahanga Ahumahi Noa hei Ārai
Te Mahanga 1: Whakamahia te G.657A2 kia ōrite mō ngā taura katoa
He maha ngā kaihoko e whakangawari ana i te hoko mā te tono i te G.657A2 anake mō te kaupapa katoa. Ahakoa e taea ana i te taha hangarau, ka whakapiki ake i te tahua mō ngā taura tawhiti o waho me te kore he wero piko. Otinga kua arotauhia: Hoahoa whatunga ranu: G.652D whāngai o waho + G.657A2 taura o roto/taka.
Te Mahanga 2: Whakakapia a G.657A2 ki te G.652D iti ake te utu mō ngā waea o roto
Ka whakaitihia e ētahi kaiwhakarato ngā utu mā te whakakapi i ngā taura o roto G.652D ki te G.657A2. Whai muri i te hanganga, ka pāngia ngā kiritaki e te hononga ipurangi kore pumau, te ngaronga o ngā pākete, me te mana whatu e rerekē haere ana. He uaua te tautuhi hapa nā te mea ka puta noa ngā raruraru whakaiti i muri i te whakapiringa o te muka ki roto i ngā pakitara, i ngā paipa rānei. Me hanga kino te whakakapinga, me ngā mate nui. Me tono ngā kaihoko i ngā pūrongo whakamātautau muka hei manatoko i ngā tohu ngaronga piko i mua i te tukunga.
Mahanga 3: Kaua e aro ki ngā whakaritenga mō te pūtoro piko mō G.652D i te wā hangahanga
Ahakoa te kounga teitei o te taura G.652D, mā te tāutanga hē pērā i te piko koi, ngā here taura piri, me te takai iti-whāiti ka kino tonu te mahi a te hononga. Me whakatinana e ngā kaiwhakahaere mara ngā whakaritenga mō te iti rawa o te whāiti piko.
Te Mahanga 4: Te wareware i te whakahaerenga ngaronga honohono i runga i ngā hononga muka ranu
He maha ngā hononga tauutuutu i waenga i te ngaronga whakaurunga puranga G.652D me G.657A2, ka whakapoto i te tawhiti tuku mōrahi. Me whakaiti e ngā kaihoahoa whatunga ngā pūwāhi hononga ranu i ngā wāhi katoa e taea ai.
6. Whakarāpopototanga me te Rārangi Arowhai Kōwhiringa Whakamutunga
Ehara a G.652D me G.657A2 i te kōwhiringa whakataetae ina he pai ake tetahi i tetahi. Ko te kōwhiringa tika e whakawhirinaki ana ki te tahora ara, te taiao tāutanga, ngā āhuatanga piko me te tahua kaupapa.
Rārangi Arowhai Whakatau Tere: Tuarā o waho tawhiti, ara māmā → G.652D Waea ā-roto, taura taka FTTH, kokonga piripono, kāpata piripono → G.657A2 Whatunga urunga whakauru: whāngai o waho + taura kaiwhakamahi o roto → Tahora ranu (G.652D + G.657A2) He iti te wāhi piko, he uaua te hangarau whakahoutanga → Whakaritea te G.657A2 Hanganga matua nui me te whakahaere utu tino kaha → Whakatairangahia a G.652D
I te mea kei te piki haere tonu te hiahia o te ao mō te FTTH, te rorohiko taha me te whakawhānui i ngā pokapū raraunga, ka whakamahia tonutia e ngā kaihangarau muka whatu ngā momo muka e rua. Mā te mārama ki te rohe hangarau i waenga i a G.652D me G.657A2 ka whakakorea ngā hapa whakatakotoranga, ka whakapai ake i te pono o te whatunga, ā, ka arotau i ngā whakapaunga whakapaipai.
Wāhanga FAQ (Wāhanga Matua a Google me te Haerenga ki te Huarahi Roa)
P1: Ka taea e G.657A2 te whakahaere i te tuku 100G/400G, pērā i a G.652D?
A1: Āe. Ka tutuki i a G.657A2 ngā paerewa G.652D katoa, e tautoko ana i te tuku ahokore 10G, 40G, 100G i raro i ngā herenga tawhiti ōrite.
P2: He aha te rerekētanga i waenganui i a G.657A1 me G.657A2?
A2: Ko te iti rawa o te piko o G.657A1 he 10 mm; ka eke te G.657A2 ki te 7.5 mm, he pai ake te mahi ārai-piko mō te whakatinanatanga wero ake i te wāhi whaiti.
Q3: He nui ake te ngaronga tohu o G.657A2 i a G.652D i runga i ngā huarahi tika?
A3: I raro i ngā āhuatanga tika, kāore he piko, he iti noa te rerekētanga whakaiti (iti iho i te 0.01 dB/km). Ka puta noa te āputa ngaronga ina puta te piko pūmau.
Q4: Ka taea e au te whakamahi i te muka G.652D mō ngā taura whakapiri o roto?
A4: Kāore i te tūtohutia. He maha ngā wā ka takaihia ngā taura whakapiri ki roto i ngā whatanga. Mā te piko iti ka puta he mate tāpiri tonu, ka pā ki te pumau o te pūnaha.
