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Cov Lus Nug Feem Ntau
G.657.A1 vs G.657.A2: Kev Sib Piv Tag Nrho ntawm Cov Fiber Uas Tsis Muaj Kev Xav Tau Ib Hom
2026-08-06
FTTH, FTTB, MDU ntau lub tsev nyob hauv tsev xov hlau, compact data-center cabling thiab micro-duct deployment tau muab tso rau pem hauv ntej cov kev cai nruj rau kev ua haujlwm ntawm fiber bending. Ib txwm muaj G.652.D ib hom fiber yuav tsim cov macrobending poob thaum lub vojvoog khoov me dhau, ua rau muaj kev cuam tshuam ntawm qhov muag ntau dhau, kev pabcuam PON tsis ruaj khov, kev poob qis tsis tu ncua thiab txawm tias fiber tawg ntawm qhov chaw. ITU-T tau tso tawm tus qauv G.657 los daws qhov teeb meem no, txhais ob qho kev hloov pauv fiber rov qab-sib xws li khoov-tsis rhiab heev: G.657.A1 thiab G.657.A2.
Muaj ntau tus kws ua haujlwm hauv network, cov neeg cog lus ua haujlwm thiab cov neeg ua haujlwm yuav khoom ntsib teeb meem thoob ntiaj teb: Qhov sib txawv ntawm kev txawj ntse tiag tiag ntawm G.657.A1 thiab G.657.A2 yog dab tsi? Vim tias lawv zoo ib yam li pom, yuav ua li cas kom tsis txhob raug dag los ntawm cov khoom tsis raug? Qhov xwm txheej twg xaiv A1 thiab qhov twg yuav tsum siv A2? Ntau qhov project raug kev pheej hmoo zais cia: siv A1 hauv qhov chaw nqaim hnyav, ua rau kev lees txais tsis ua tiav, rov ua dua tom qab muag kev saib xyuas thiab siab dua tag nrho cov nqi project hauv lub sijhawm ntev, txawm tias tus nqi khoom siv pib tau txuag.
Tsab xov xwm no piv G.657.A1 thiab G.657.A2 los ntawm ITU-T cov qauv txheem, kev poob khoov, kev sib raug zoo, cov xwm txheej ntawm daim ntawv thov, kev tshuaj xyuas tus nqi-txiaj ntsig, cov teeb meem engineering ib txwm muaj thiab cov txheej txheem txheeb xyuas kev yuav khoom, pab koj xaiv cov fiber kom raug rau FTTH, cov xov hlau sab hauv tsev, MDU thiab micro-duct projects.
1. Cov Lus Txhais Tseem Ceeb & ITU-T Cov Qauv Txheej Txheem
Ob leeg G.657.A1 thiab G.657.A2 koom nrog Pawg A khoov-tsis rhiab heev ib hom fiber, tag nrho rov qab sib xws nrog cov fiber G.652.D qub, uas txhais tau tias phim hom-teb-txoj kab uas hla, tuaj yeem ncaj qha spliced lossis txuas nrog G.652.D deployed network uas twb muaj lawm yam tsis muaj kev poob splicing siab heev. Lawv yog cov fiber ib hom qis-dej-peak, txhawb nqa O/S/C/L ntau-band kis, hloov kho rau PON, 10G PON, XGS-PON thiab yav tom ntej high-speed optical access networks.
Qhov sib txawv tseem ceeb tshaj plaws yog nyob rau hauv qhov tsawg kawg nkaus uas tso cai rau khoov vojvoog thiab macrobending-loss index nyob rau hauv qhov khoov vojvoog me me, txhais los ntawm ITU-T G.657-2024 standardITU.
| Cov Qauv | G.657.A1 | G.657.A2 |
|---|---|---|
| Qhov tsawg kawg nkaus khoov vojvoog teev tseg | 10 hli | 7.5 hli |
| Macrobending poob @15 hli radius, 10 tig, 1550 nm | ≤0.25 dB | ≤0.03 dB |
| Macrobending poob @10 hli radius, 1 tig, 1550 nm | ≤0.75 dB | ≤0.10 dB |
| Macrobending poob @7.5 hli radius, 1 tig, 1550 nm | Tsis tau teev tseg | ≤0.50 dB |
| Hom-teb txoj kab uas hla @ 1310 nm | 8.6 ± 0.4 μm | 8.6 ± 0.4 μm |
| Kev Sib Haum Xeeb | Ua raws li G.652.D tag nrho | Ua raws li G.652.D tag nrho |
| Tus nqi sib piv ib txwm muaj | Lub hauv paus | +8 ~ 15% siab dua A1 |
Lus Cim Tseem Ceeb: Tsis muaj qhov sib txawv ntawm cov fiber liab qab ntawm G.657.A1 thiab G.657.A2. Koj tsis tuaj yeem qhia lawv sib nrug los ntawm xim txheej lossis tsos. Tsuas yog macrobending-loss kuaj hauv chaw kuaj mob thiaj li tuaj yeem txheeb xyuas tus qauv tseeb. Ntau tus neeg muag khoom tsis zoo sau npe G.657.A1 ua G.657.A2 kom tau txais txiaj ntsig ntxiv, uas yog qhov kev pheej hmoo zais cia loj hauv kev ua haujlwm yuav khoom.
2. Kev sib piv kev ua tau zoo tob tob
2.1 Kev tiv thaiv khoov thiab kev poob macrobending
Kev poob ntawm macrobending yog qhov tseem ceeb ntawm qhov sib txawv ntawm ob lub fibers no. Thaum cov fiber khoov, ib feem ntawm lub teeb liab overflows cladding, tsim attenuation. Lub vojvoog khoov me dua, qhov cuam tshuam ntau dua.
G.657.A1 tau zoo tshaj plaws rau qhov tsawg kawg nkaus khoov vojvoog 10 hli. Nyob rau hauv kev tsim kho ib txwm muaj, nws qhov kev ua tau zoo ruaj khov. Tab sis thaum yuam kom khoov rau hauv 7.5 hli ntse, macrobending poob nce siab, uas yuav thawb PON txuas nyiaj txiag tawm ntawm ntau yam, coj ONU tsis ruaj khov online, random pob poob, qeeb qeeb qeeb los ntawm cov neeg siv kawg, tshwj xeeb tshaj yog pom tseeb nyob rau hauv 1550 nm thiab 1625 nm ntev-wavelength teeb liab.
G.657.A2 siv cov qauv tsim tshwj xeeb uas siv cov khoom siv doping los ua lub hauv paus, uas tiv thaiv tau qhov xau ntawm lub teeb thaum khoov me me. Thaum khoov lub vojvoog 15 hli, qhov poob ntawm kaum tig tsuas yog ≤0.03 dB xwb, qis dua A1. Nws txhawb nqa qhov tsawg kawg nkaus ntawm 7.5 hli. Txawm tias thaum tus neeg teeb tsa ua kom lub ces kaum ntse ntse 90-degree, kev sib txuas me me hauv kev sib txuas lossis lub thawv optical-box nqaim, qhov kev txo qis ntawm lub teeb liab tseem nyob qis, ua rau cov neeg ua haujlwm hauv thaj teb kam rau siab dua. Txawm tias kev ua haujlwm tsis raug yuav tsis ua rau muaj kev poob loj ntawm lub teeb liab tam sim ntawd.
2.2 Kev sib raug zoo ntawm lub network thiab kev ua haujlwm ntawm kev sib txuas
Ob qho tib si A1 thiab A2 phim G.652.D hom-teb-txoj kab uas hla. Cov kws tshaj lij hauv thaj chaw tuaj yeem ncaj qha txuas G.657.A1/A2 nrog cov fiber G.652.D qub hauv lub network sab nraud-cog. Tsis tas yuav hloov kho splicing-program tshwj xeeb. Lub tshuab fusion splicer calibrated ib txwm tuaj yeem tau txais tus nqi poob splicing tsim nyog.
Lub tswv yim siv tau: Txawm hais tias kev sib haum xeeb zoo, qhov kawg ntawm cov fiber qias neeg, qhov txiav tsis zoo tseem yuav ua rau muaj kev poob splicing ntau. Rau kev sib xyaw ua ke ntawm cov fiber, cov cuab yeej txiav siab thiab cov khoom siv fusion-splicing uas tau kho tas li raug pom zoo kom lav qhov txuas zoo.
2.3 Kev ntseeg siab ntawm lub tshuab
Ob lub fibers ua tau raws li 0.69 GPa pov thawj-kev ntxhov siab mechanical tus qauv ntawm ITU-T. Nyob rau hauv cov nqe lus ntawm tensile tsis kam, txheej-txheej mechanical khoom, tsis muaj qhov sib txawv pom tseeb. Qhov sib txawv yog pom tseeb hauv kev ua haujlwm mechanical-kev ntxhov siab-tiv taus kev ua tau zoo nyob rau hauv rov ua dua qhov xwm txheej khoov ntse. G.657.A2 tuaj yeem dais ntau zaus me me-voj voog khoov yam tsis muaj kev pheej hmoo zais, tsim rau cov xwm txheej uas fiber yuav raug kho dua thiab rov ua dua tom qab kev teeb tsa.
2.4 Tus nqi thiab qhov xwm txheej ntawm cov khoom xa tuaj
G.657.A1 muaj cov txheej txheem tsim khoom yooj yim, muaj khoom txaus thoob ntiaj teb, tus nqi ruaj khov, tsim nyog rau kev yuav khoom loj.
G.657.A2 xav tau kev tswj hwm cov txheej txheem doping kom meej. Tus nqi khoom siv raw siab dua. Hauv qee lub voj voog ua lag luam, kev muab khoom yuav nruj, lub sijhawm siv tau ntawm kev hais nqe luv luv, kev hloov pauv ntawm tus nqi loj dua. Ntau tus thawj tswj hwm qhov project feem ntau xaiv A2 rau txhua qhov xwm txheej siv, uas coj cov nqi pov tseg tsis tsim nyog rau cov haujlwm yam tsis muaj qhov yuav tsum tau khoov me me.
3. Kev Tshuaj Xyuas Qhov Xwm Txheej ntawm Daim Ntawv Thov: Thaum twg yuav tsum xaiv G.657.A1, thaum twg yuav tsum xaiv G.657.A2
Xaiv G.657.A1 rau cov xwm txheej no
- Kev xa tawm FTTH drop-cable txheem: los ntawm lub txee faib khoom ntawm txoj kev mus rau phab ntsa sab nraud ntawm lub tsev, txoj kev xa khoom yog qhov qhib dav, tsis muaj cov ces kaum ntse heev.
- Cov xov hlau MDU tshiab hauv tsev: qhov chaw kav dej txaus, cov qauv tsim kho tswj hwm qhov khoov vojvoog ≥10 hli nruj me ntsis.
- Cov haujlwm tsim kho vaj tse loj uas muaj nyiaj tsawg, feem ntau cov kev yog ncaj, tsuas yog ib nrab ntawm cov ntu uas khoov maj mam xwb.
- Qhov project tsim kho dua tshiab ntawm cov network sib xyaw, kev sib txuas ua ke nrog cov fiber G.652.D sab nraud uas twb muaj lawm, nrhiav kev sib npaug ntawm kev ua tau zoo.
G.657.A1 muab kev muaj peev xwm khoov tau zoo ntawm tus nqi khoom siv qis dua. Tsuav yog pab pawg tsim kho ua raws li 10 hli qhov tsawg kawg nkaus khoov-radius specification, network-khiav-ruaj khov tuaj yeem lav tag nrho.
Yuav tsum xaiv G.657.A2 rau cov xwm txheej no
- Kev kho dua tshiab lub tsev qub cov xov hluav taws xob sab hauv tsev: cov kav dej nqaim zais, ces kaum ntawm phab ntsa tig 90-degree, qhov chaw xov hluav taws xob tsawg.
- MDU ceev ceev, lub thawv faib khoom me me, kev sib txuas kaw sab hauv coiling ntom ntom, kev txuas hluav taws xob hauv txee qhov chaw txwv.
- Kev xa tawm micro-duct, sab hauv tsev fiber jumper ua ntej, lub tsev-hauv-phab ntsa faus fiber.
- Kev kho dua tshiab nrog qhov zoo ntawm kev tsim kho tsis tuaj yeem tswj tau: tus neeg teeb tsa yuav ua rau muaj kev khoov me me thaum lub sijhawm tsim kho. Siv A2 los txhim kho qhov ua yuam kev ntawm tag nrho cov txuas.
- Kev sib txuas lus ntawm cov neeg siv khoom uas xav tau kev ntseeg siab: kev tsim kho lag luam, zej zog siab, zam kev saib xyuas tom qab muag uas tshwm sim los ntawm kev ua tsis tiav ntawm kev khoov.
Kev ceeb toom tseem ceeb: Yog tias koj siv G.657.A1 hauv cov xwm txheej uas xav tau 7.5 hli kev ua haujlwm khoov, koj yuav dhau qhov kev xeem lees txais ntawm lub Hoobkas, tab sis qhov teeb meem zais cia yuav tawg tom qab ntau lub hlis ntawm kev ua haujlwm: kev hloov pauv kub, kev hloov pauv me ntsis ntawm cov fiber yuav ua rau maj mam nce ntxiv ntawm kev poob macrobending, ua rau kev pabcuam tsis ua haujlwm. Qhov txhaum no nyuaj rau nrhiav hauv kev ua haujlwm txhua hnub, coj tus nqi OPEX siab rau cov neeg teb xov tooj.
4. Cov teeb meem thoob ntiaj teb hauv kev lag luam thiab cov yuam kev ib txwm muaj
Qhov mob 1: Kev dag ntxias pom kev txheeb xyuas tus kheej
Muaj ntau tus neeg yuav khoom yuam kev ntseeg tias lawv tuaj yeem paub qhov txawv ntawm A1 / A2 los ntawm cov tsos ntawm fiber. Qhov tseeb, cov txheej txheem fiber liab qab, cov tsos ntawm cable sab nraud tsis muaj qhov sib txawv. Cov cable uas muaj cim tsis raug yog qhov nyuaj rau tshuaj xyuas thaum tau txais cov khoom, cov teeb meem tsuas yog tshwm sim tom qab kev tsim kho tiav, coj cov nqi kho dua tshiab loj heev rau sab project.
Qhov Mob 2: Kev xaiv ntau dhau lossis tsis txaus
Ob qho kev coj ua tsis ncaj ncees uas feem ntau tshwm sim:
- Txhua yam hauv A2: Txawm hais tias qhov chaw xa khoom tiag tiag li cas los xij, txhua yam khoom siv G.657.A2, ua rau tus nqi ntawm qhov project nce ntxiv yam tsis tsim nyog.
- Txhua yam hauv A1: Nrhiav kev pheej yig yam tsis muaj kev xav, siv A1 thaum kho tsev qub, thiab thaum kho cov kav dej nqaim thiab khoov hnyav. Cov ntsuas kev lees txais tsis tsim nyog, lossis thaum lub sijhawm tom qab kev pabcuam tsis ruaj khov.
Kev xav kom raug: Sib txawv raws li qhov xwm txheej ntawm txoj kev xa xov hauv qhov chaw. Faib thaj chaw ua haujlwm: siv A1 rau qhov qhib txoj kev, txais yuav A2 rau qhov chaw nqaim hauv tsev, paub txog qhov sib npaug ntawm tus nqi thiab kev ua tau zoo.
Qhov mob 3: Tsis meej pem G.657.A series thiab G.657.B series
G.657.A1/A2 khaws cia tag nrho G.652.D rov qab-kev sib raug zoo, haum rau FTTH nkag mus rau hauv network. G.657.B2/B3 lub hom phiaj ultra-small-bending-radius sab hauv tsev-luv-ntev xov hlau, ib feem-index deviates los ntawm G.652.D, tsis haum rau qhov chaw ntev-ntev-sab nraum-cog splicing scene. Ntau tus engineers sib xyaw A-series thiab B-series, ua rau muaj kev pheej hmoo sib xws hauv network reconstruction projectITU.
Qhov mob 4: Tsis quav ntsej daim ntawv qhia txog kev sim ua ntau ntau hauv kev yuav khoom
Daim ntawv xaj yuav khoom tsuas yog cim hom fiber xwb, tab sis tsis tas yuav tsum tau tus neeg muag khoom muab daim ntawv qhia txog kev poob ntawm cov khoom siv ntau ntau. Thaum muaj kev hloov pauv cuav, tus neeg ua haujlwm yuav ris tag nrho cov kev poob.
5. Cov kev coj ua zoo tshaj plaws rau kev yuav khoom thiab kev xa tawm
- Cov lus qhia txog kev siv tshuab meej hauv daim ntawv yuav khoom: Sib txawv hom fiber raws li qhov xwm txheej me, tsis txhob qhia ib qho qauv rau tag nrho qhov project.
- Yuav tsum tau tus neeg muag khoom muab cov ntawv qhia txog kev sim macrobending-loss uas sib xws, tsom mus rau 1550 nm macrobending-loss index hauv qab 15 hli thiab 10 hli bending radius, qhov no yog txoj hauv kev zoo tshaj plaws los txheeb xyuas qhov tseeb-thiab-cuav A1 / A2.
- Rau cov lus qhia txog kev tsim kho: Txawm tias siv G.657.A2, tsis txhob ua kom puas tsuaj rau qhov khoov-voj-voog hauv kev tsim kho. Kev tiv thaiv khoov me me yog qhov ua txhaum-ua siab ntev-muaj peev xwm, tsis txhawb kom-kev coj cwj pwm tsis zoo-kev tsim kho. Tus qauv-kev tsim kho tseem yuav tsum tau ua raws.
- Kev suav nyiaj txiag ntawm qhov txuas: Thaum tsim qhov txuas PON, khaws qee qhov kev txo qis rau qhov poob macrobending, tshwj xeeb tshaj yog rau seem hluav taws xob sab hauv tsev.
- Kev lees txais-kev xeem: Tsis yog tsuas yog sim tag nrho-qhov txuas-kev poob xwb, tab sis kuj them sai sai rau qhov ntev-wavelength-(1550 nm, 1625 nm) attenuation tus nqi. Ntev-wavelength yog rhiab heev rau macrobending poob, tuaj yeem nthuav tawm qhov zais-khoov-qhov tsis zoo zoo.
6. Cov Lus Qhia Luv Luv
G.657.A1 thiab G.657.A2 yog ob qho tib si laus khoov-tsis rhiab heev ib-hom-fiber rau niaj hnub FTTx network. G.657.A1 tsom mus rau dav dav-FTTH-drop-cable thiab nruab nrab-khoov-qhov chaw, nrog rau qhov zoo dua tus nqi; G.657.A2 yog tsom mus rau qhov chaw nqaim, kev kho dua tshiab qub, qhov chaw siab-density-sab hauv tsev-xaim hluav taws xob, muab kev ua tau zoo dua tiv thaiv macrobending-kev ua tau zoo dua thiab kev tsim kho-kev ua txhaum-kev kam rau siab dua, ntawm tus nqi siab dua.
Tsis muaj qhov zoo dua kiag li ntawm G.657.A1 thiab G.657.A2. Lub hauv paus ntawm kev xaiv yog kev sib phim fiber-kev ua tau zoo nrog qhov tseeb-kev teeb tsa-xwm txheej. Kev nrhiav qhov muag tsis pom ntawm qhov siab-spec lossis ntau dhau-kev nrhiav ntawm tus nqi qis yuav coj ob qho tib si-kev pheej hmoo project. Cov kws ua vaj tse thiab cov thawj coj kev yuav khoom yuav tsum sib xyaw ua ke-xwm txheej pipeline, kev kho dua tshiab-lossis-tsim tshiab-tsim, kev tsim kho-pab pawg-muaj peev xwm, project-budget los txiav txim siab zoo. Lub caij no, txhawb nqa cov khoom tuaj-kev txheeb xyuas, tiv thaiv kev pheej hmoo khoom tsis raug, zam kev poob hnyav tom qab-cable-tso-ua tiav.
Rau cov neeg teb xov tooj, cov neeg sib koom ua ke thiab cov neeg yuav cable, kev paub txog qhov sib txawv ntawm G.657.A1 vs G.657.A2 pab txhim kho kev ruaj khov ntawm lub network, tswj hwm tag nrho cov nqi ntawm lub neej, txo cov haujlwm tom qab muag khoom ntawm FTTH project.
