Hauv kev tsim kho network fiber-to-the-home (FTTH), cov khoom faib tawm optical, ua cov khoom tseem ceeb ntawm cov network passive optical (PONs), ua rau ntau tus neeg siv sib koom ua ke ntawm ib qho fiber los ntawm kev faib hluav taws xob optical, cuam tshuam ncaj qha rau kev ua haujlwm ntawm network thiab kev paub ntawm tus neeg siv. Tsab xov xwm no tshuaj xyuas cov thev naus laus zis tseem ceeb hauv kev npaj FTTH los ntawm plaub qhov kev xav: kev xaiv thev naus laus zis splitter optical, kev tsim qauv network, kev sib cais piv optimization, thiab yav tom ntej.
Kev Xaiv Optical Splitter: Kev Sib Piv ntawm PLC thiab FBT Technology
1. Planar Lightwave Circuit (PLC) Splitter:
• Kev txhawb nqa tag nrho (1260–1650 nm), tsim nyog rau ntau lub wavelength systems;
•Txhawb kev faib ua qib siab (piv txwv li, 1 × 64), kev poob ntxig ≤17 dB;
• Kev ruaj khov kub siab (-40 ° C txog 85 ° C kev hloov pauv <0.5 dB);
• Cov ntim khoom me me, txawm hais tias cov nqi pib kim heev.
2. Fused Biconical Taper (FBT) Splitter:
•Txhawb nqa tsuas yog cov wavelengths tshwj xeeb xwb (piv txwv li, 1310/1490 nm);
• Txwv rau kev faib qis qis (qis dua 1 × 8);
• Kev poob qis tseem ceeb hauv qhov chaw kub siab;
• Tus nqi qis, tsim nyog rau cov xwm txheej uas tsis muaj peev nyiaj.
Txoj Kev Xaiv:
Hauv cov cheeb tsam nroog uas muaj neeg coob coob (cov tsev nyob siab, cov cheeb tsam ua lag luam), cov PLC splitters yuav tsum tau muab tso ua ntej kom ua tau raws li qhov yuav tsum tau faib cov kev txiav txim siab thaum tswj hwm kev sib raug zoo nrog XGS-PON / 50G PON hloov kho dua tshiab.
Rau cov xwm txheej nyob deb nroog lossis cov neeg tsawg, FBT splitters yuav raug xaiv los txo cov nqi xa tawm thawj zaug. Kev kwv yees ua lag luam qhia tias PLC kev lag luam yuav tshaj 80% (LightCounting 2024), feem ntau yog vim nws cov txiaj ntsig ntawm kev siv tshuab.
Kev Tsim Qauv Network: Kev Sib Cais Ua Ke Piv Rau Kev Faib Tawm
1. Lub Tshuab Splitter Tier-1 Nruab Nrab
•Topology: OLT → 1 × 32/1 × 64 splitter (xa mus rau hauv chav khoom siv / FDH) → ONT.
• Cov xwm txheej siv tau: Cov nroog CBDs, cov chaw nyob coob coob.
• Cov txiaj ntsig:
- Kev txhim kho 30% ntawm qhov chaw ua txhaum kev ua haujlwm zoo;
- Kev poob ib theem ntawm 17–21 dB, txhawb nqa 20 km kis;
- Kev nthuav dav peev xwm sai sai los ntawm kev hloov splitter (piv txwv li, 1 × 32 → 1 × 64).
2. Muab faib ntau theem Splitter
•Topology: OLT → 1 × 4 (Qib 1) → 1 × 8 (Qib 2) → ONT, pabcuam 32 tsev neeg.
• Cov xwm txheej tsim nyog: Cov cheeb tsam nyob deb nroog, cov cheeb tsam roob, cov tsev villa.
• Cov txiaj ntsig:
- Txo cov nqi fiber ntau los ntawm 40%;
- Txhawb nqa lub nplhaib network redundancy (tsis siv neeg ceg txhaum hloov pauv);
- Haum rau thaj chaw nyuaj.
Kev Txhim Kho Qhov Sib Pauv: Kev Sib Npaug Qhov Deb Ntawm Kev Xa Mus Los thiab Bandwidth Yuav Tsum Tau Ua
1. Kev Sib Tham Ua Ke ntawm Cov Neeg Siv Khoom thiab Kev Paub Tseeb Txog Bandwidth
Nyob rau hauv XGS-PON (10G downstream) nrog 1 × 64 splitter configuration, qhov siab tshaj plaws bandwidth rau ib tus neeg siv yog kwv yees li 156Mbps (50% concurrency rate);
Cov cheeb tsam uas muaj neeg coob coob xav tau Dynamic Bandwidth Allocation (DBA) lossis nthuav dav C ++ band kom txhim kho lub peev xwm.
2. Kev Npaj Txhim Kho Dua Yav Tom Ntej
Khaws cia ≥3dB optical zog margin kom haum rau cov fiber laus;
Xaiv cov PLC splitters nrog cov piv txwv sib cais hloov kho tau (piv txwv li, teeb tsa tau 1 × 32 ↔ 1 × 64) kom tsis txhob muaj kev tsim kho ntxiv.
Cov Qauv Yav Tom Ntej thiab Kev Tsim Kho Tshiab ntawm thev naus laus zis
Kev siv tshuab PLC ua rau muaj kev faib ua pawg siab:Qhov kev nthuav dav ntawm 10G PON tau thawb PLC splitters mus rau hauv kev saws txais yuav, txhawb nqa kev hloov kho seamless rau 50G PON.
Kev siv cov qauv sib xyaw ua ke:Kev sib koom ua ke ntawm kev faib ib theem hauv nroog nrog kev faib ntau theem hauv cov cheeb tsam nroog ua rau muaj kev sib npaug ntawm kev ua haujlwm zoo thiab tus nqi.
Kev siv tshuab ODN ntse:eODN ua rau muaj kev hloov kho dua tshiab ntawm cov piv sib cais thiab kev kwv yees qhov txhaum, txhim kho kev txawj ntse ua haujlwm.
Kev tshawb pom txog kev sib koom ua ke ntawm silicon photonics:Cov chips PLC monolithic 32-channel txo cov nqi los ntawm 50%, ua rau 1 × 128 ultra-high splitting ratios los txhawb kev txhim kho lub nroog ntse tag nrho.
Los ntawm kev xaiv cov thev naus laus zis tshwj xeeb, kev tsim kho vaj tse yooj ywm, thiab kev ua kom zoo dua qub, FTTH tes hauj lwm tuaj yeem txhawb nqa gigabit broadband rollout thiab cov kev xav tau kev hloov pauv thev naus laus zis yav tom ntej kaum xyoo.
Lub sijhawm tshaj tawm: Cuaj hlis-04-2025