Hauv fiber-to-the-home (FTTH) network tsim, optical splitters, raws li cov khoom tseem ceeb ntawm passive optical networks (PONs), pab kom cov neeg siv ntau sib koom ntawm ib qho fiber ntau los ntawm kev faib hluav taws xob kho qhov muag, cuam tshuam ncaj qha rau kev ua haujlwm hauv network thiab cov neeg siv kev paub. Kab lus no tau txheeb xyuas cov thev naus laus zis tseem ceeb hauv FTTH kev npaj los ntawm plaub qhov kev xav: optical splitter technology xaiv, network architecture tsim, splitting ratio optimization, thiab yav tom ntej tiam.
Optical Splitter Xaiv: PLC thiab FBT Technology Sib Piv
1. Planar Lightwave Circuit Court (PLC) Splitter:
• Kev them nyiaj yug puv-band (1260–1650 nm), haum rau ntau lub voj voog;
• Txhawb nqa kev txiav txim siab siab (piv txwv li, 1 × 64), kev nkag poob ≤17 dB;
• Kub kub stability (-40 ° C mus rau 85 ° C hloov <0.5 dB);
• Cov ntim me me, tab sis cov nqi pib kuj tseem siab.
2. Fused Biconical Taper (FBT) Splitter:
•Supports xwb wavelengths (xws li, 1310/1490 nm);
• Txwv rau kev txiav txim qis qis (hauv qab 1 × 8);
• Tsis tshua muaj kev hloov pauv hauv qhov chaw kub kub;
• Tus nqi qis, tsim nyog rau cov xwm txheej txwv nyiaj txiag.
Kev xaiv tswv yim:
Nyob rau hauv nroog high-density cheeb tsam (cov tsev nyob hauv siab, cov cheeb tsam kev lag luam), PLC splitters yuav tsum tau ua ntej kom tau raws li qhov kev txiav txim siab sib cais thaum tswj kev sib raug zoo nrog XGS-PON / 50G PON hloov khoom dua tshiab.
Rau cov xwm txheej nyob deb nroog lossis qhov tsawg tsawg, FBT splitters yuav raug xaiv los txo cov nqi xa tawm thawj zaug. Kev ua lag luam kwv yees qhia PLC kev lag luam sib koom yuav ntau dua 80% (LightCounting 2024), feem ntau vim nws cov txiaj ntsig thev naus laus zis.
Network Architecture Design: Centralized piv rau Distributed Spliting
1. Centralized Tier-1 Splitter
•Topology: OLT → 1 × 32 / 1 × 64 splitter (deployed nyob rau hauv cov khoom siv chav tsev / FDH) → ONT.
• Cov xwm txheej siv tau: Hauv nroog CBDs, thaj chaw muaj neeg nyob siab.
• Qhov zoo:
- 30% kev txhim kho hauv qhov chaw ua haujlwm tsis raug;
- Ib-theem poob ntawm 17-21 dB, txhawb 20 km kis tau tus mob;
- Muaj peev xwm nthuav dav los ntawm kev hloov pauv hloov pauv (xws li 1 × 32 → 1 × 64).
2. Faib Multi-Level Splitter
•Topology: OLT → 1 × 4 (Qib 1) → 1 × 8 (Qib 2) → ONT, pab 32 tsev neeg.
• Cov xwm txheej tsim nyog: thaj chaw nyob deb nroog, cheeb tsam roob, villa vaj tse.
• Qhov zoo:
- Txo cov nqi qaum fiber ntau los ntawm 40%;
- Txhawb lub nplhaib network redundancy (tsis siv neeg ceg hloov pauv);
- Adaptable rau complex struts.
Optimization ntawm Splitting Ratio: Ntsuas qhov sib kis qhov deb thiab Bandwidth xav tau
1. Tus neeg siv kev sib txuam thiab kev ruaj ntseg Bandwidth
Nyob rau hauv XGS-PON (10G downstream) nrog 1 × 64 splitter configuration, ncov bandwidth ib tus neeg siv yog kwv yees li 156Mbps (50% concurrency rate);
High-density cov cheeb tsam xav tau Dynamic Bandwidth Allocation (DBA) lossis nthuav C ++ band los txhim kho lub peev xwm.
2. Kev npaj kho dua tshiab yav tom ntej
Reserve ≥3dB optical zog paj kom haum rau fiber ntau laus;
Xaiv PLC splitters nrog adjustable splitting ratios (xws li, configurable 1 × 32 ↔ 1 × 64) kom tsis txhob redundant tsim.
Yav Tom Ntej Trends thiab Technological Innovation
PLC thev naus laus zis ua rau kev txiav txim siab siab:Kev loj hlob ntawm 10G PON tau txhawb nqa PLC splitters rau hauv kev saws me nyuam, txhawb kev hloov kho seamless rau 50G PON.
Hybrid architecture txais yuav:Kev sib koom ua ke ib-theem kev sib cais hauv nroog nrog ntau theem kev sib cais hauv thaj chaw suburban sib npaug kev pab them nqi thiab nqi.
Intelligent ODN technology:eODN tso cai rau cov chaw taws teeb reconfiguration ntawm splitting ratios thiab ua txhaum kev twv, txhim khu kev txawj ntse ua hauj lwm.
Silicon photonics integration breakthrough:Monolithic 32-channel PLC chips txo cov nqi los ntawm 50%, ua kom 1 × 128 ultra-high splitting ratios mus rau kev txhim kho tag nrho-optical ntse nroog.
Los ntawm kev xaiv thev naus laus zis, hloov pauv kev tsim vaj tsev, thiab kev sib cais qhov sib txawv ntawm qhov ua kom zoo, FTTH tes hauj lwm tuaj yeem txhawb nqa gigabit broadband rollout thiab yav tom ntej xyoo caum-ntev technological evolution yuav tsum tau.
Post lub sij hawm: Sep-04-2025