Kwi-fiber-to-the-home (FTTH) ukwakhiwa kwenethiwekhi, i-splitters optical, njengamacandelo angundoqo we-passive optical networks (PONs), yenza ukuba ukwabelana ngabasebenzisi abaninzi kwifiber enye ngokusasazwa kwamandla okukhanya, okuchaphazela ngokuthe ngqo ukusebenza kwenethiwekhi kunye namava omsebenzisi. Eli nqaku lihlalutya ngokucwangcisiweyo itekhnoloji ephambili kucwangciso lwe-FTTH ukusuka kwiimbono ezine: ukhetho lwetekhnoloji ye-optical splitter, uyilo loyilo lwenethiwekhi, ulungelelwaniso lokwahlulahlula, kunye neendlela ezizayo.
UKhetho lwe-Splitter ye-Optical: I-PLC kunye ne-FBT Technology Comparison
1. ISekethe yoLwave ye-Planar (PLC) iSplitter:
• Inkxaso yebhendi epheleleyo (1260–1650 nm), ilungele iinkqubo zamaza amaninzi;
• Ixhasa ukuhlukana okuphezulu (umzekelo, 1 × 64), ilahleko yokufaka ≤17 dB;
• Uzinzo lobushushu obuphezulu (-40 ° C ukuya ku-85 ° C ukuguquguquka <0.5 dB);
•Ukupakishwa okuncinci, nangona iindleko zokuqala ziphezulu.
2. I-Biconical Taper eFused (FBT) iSplitter:
•Ixhasa kuphela ubude bobude obukhethekileyo (umz., 1310/1490 nm);
• Ukukhawulelana nokwahlulahlula okuphantsi (ngaphantsi kwe-1 × 8);
• Ukuguquguquka okukhulu kwelahleko kwiindawo zobushushu obuphezulu;
• Iindleko eziphantsi, zilungele iimeko zokunyanzeliswa kohlahlo lwabiwo-mali.
Isicwangciso soKhetho:
Kwiindawo ezixineneyo ezidolophini (izakhiwo eziphakamileyo zokuhlala, izithili zorhwebo), i-PLC i-splitter kufuneka ibekwe phambili ukuze ihlangabezane neemfuno eziphezulu zokwahlula ngelixa zigcina ukuhambelana nokuphuculwa kwe-PON ye-XGS-PON / 50G.
Kwiimeko zasemaphandleni okanye eziphantsi, i-FBT splitters ingakhethwa ukunciphisa iindleko zokuthunyelwa kokuqala. Uqikelelo lwentengiso lubonisa ukuba isabelo semakethi ye-PLC siya kudlula i-80% (Ukubalwa kokuKhanya ngo-2024), ngenxa yoncedo lwetekhnoloji yokulinganisa.
Uyilo lweNethiwekhi yoLwakhiwo: Indawo esembindini ngokuchasene noKwahlulahlula
1. ISiqwenga esiseMbindini weNqanaba loku-1
•I-Topology: OLT → 1×32/1×64 isiqhekeza (ibekwe kwigumbi lezixhobo/FDH) → ONT.
•Iimeko ezisebenzayo: Ii-CBD ezisezidolophini, iindawo zokuhlala ezixinene kakhulu.
•Izinto eziluncedo:
- i-30% yokuphucula ukusebenza kakuhle kwendawo ephosakeleyo;
- Ilahleko yenqanaba elinye le-17–21 dB, exhasa ukuhanjiswa kwe-20 km;
- Ukwandiswa komthamo okukhawulezayo ngokutshintsha isiqhekeza (umzekelo, 1×32 → 1×64).
2. Ukusasazwa kwe-Multi-Level Splitter
•I-Topology: OLT → 1×4 (iNqanaba loku-1) → 1×8 (iNqanaba 2) → I-ONT, inceda amakhaya angama-32.
• Iimeko ezifanelekileyo: Imimandla yasemaphandleni, imimandla yeentaba, iindawo zokuhlala.
•Izinto eziluncedo:
- Ukunciphisa iindleko ze-backbone fiber ngama-40%;
- Ixhasa i-ring network redundancy (ukutshintsha kwefault yesebe ngokuzenzekelayo);
- Ukulungelelaniswa kumhlaba onzima.
UPhulo loLwahlulo loLwahlulo: ukuLungelelanisa uMgama woThutho kunye neeMfuno zeBhandwidth
1. Concurrency yomsebenzisi kunye neBandwidth Assurance
Ngaphantsi kwe-XGS-PON (i-10G ezantsi) kunye ne-1 × 64 ukucwangciswa kwe-splitter, i-bandwidth ephezulu yomsebenzisi malunga ne-156Mbps (i-50% ye-concurrency rate);
Iindawo ezinoxinano oluphezulu zifuna i-Dynamic Bandwidth Allocation (DBA) okanye ibhendi eyandisiweyo ye-C++ ukunyusa umthamo.
2. UBonelelo loPhuculo lwexesha elizayo
Gcina ≥3dB umda wamandla okukhanya ukulungiselela ukuguga kwefayibha;
Khetha abahluli be-PLC abanemilinganiselo yokwahlula okuhlengahlengiswayo (umzekelo, uhlengahlengiso 1×32 ↔ 1×64) ukunqanda ulwakhiwo olungafunekiyo.
IiNdlela zexesha elizayo kunye noTshintsho lweTekhnoloji
Itekhnoloji ye-PLC ikhokelela ekuqhekekeni okuphezulu:Ukwandiswa kwe-10G PON kuye kwaqhubela phambili i-PLC i-splitters ibe yindlela yokwamkelwa eqhelekileyo, exhasa ukuphuculwa komthungo kwi-50G PON.
Ukwamkelwa kolwakhiwo lweHybrid:Ukudibanisa inqanaba elinye lokwahlulwa kwiindawo ezisezidolophini kunye nokwahlulwa kwamanqanaba amaninzi kwizowuni zasezidolophini kulinganisa ukusebenza kakuhle kunye neendleko.
Itekhnoloji ekrelekrele ye-ODN:I-eODN yenza kube lula uhlengahlengiso olukude lwemilinganiselo yokwahlula kunye noqikelelo lwempazamo, iphucula ubukrelekrele bokusebenza.
Impumelelo yokudityaniswa kwe-silicon photonics:Iitshiphusi ze-PLC ze-Monolithic ze-32-channel zinciphisa iindleko nge-50%, zivumela i-1 × 128 i-ultra-high-high-splitting ratios ukuqhubela phambili uphuhliso lwesixeko esihlakaniphile.
Ngokukhetha itekhnoloji elungiselelweyo, ukusasazwa kolwakhiwo oluguquguqukayo, kunye nokulungiswa komlinganiselo wokwahlula, uthungelwano lwe-FTTH lunokuxhasa ngokufanelekileyo ukukhutshwa kwe-gigabit Broadband kunye neemfuno zokuzivelela kobuchwepheshe kwixesha elizayo.
Ixesha lokuposa: Sep-04-2025