Kaho ea marang-rang ea fiber-to-the-home (FTTH), li-splitter tsa optical, e le likarolo tsa mantlha tsa marang-rang a marang-rang (PONs), li nolofalletsa basebelisi ba bangata ho arolelana fiber e le 'ngoe ka ho fana ka matla a optical, ka ho toba ho ama ts'ebetso ea marang-rang le phihlelo ea mosebedisi. Sengoliloeng sena se sekaseka ka mokhoa o hlophisehileng mahlale a mantlha a moralo oa FTTH ho tsoa liponong tse 'ne: khetho ea theknoloji ea optical splitter, moralo oa meralo ea marang-rang, ts'ebeliso ea karohano ea karohano, le mekhoa ea nako e tlang.
Khetho ea Optical Splitter: PLC le FBT Technology Comparison
1. Planar Lightwave Circuit (PLC) Splitter:
•Tšehetso ea sehlopha se feletseng (1260-1650 nm), e loketseng mekhoa e mengata ea maqhubu a maqhubu;
• E tšehetsa ho arohana ka mokhoa o phahameng (mohlala, 1 × 64), tahlehelo ea ho kenya ≤17 dB;
•Botsitso bo phahameng ba mocheso (-40°C ho 85°C fluctuation <0.5 dB);
•Liphutheloana tse nyane, leha litšenyehelo tsa pele li batla li le holimo.
2. Sekhahla sa Fused Biconical Taper (FBT):
• E ts'ehetsa feela bolelele ba maqhubu a itseng (mohlala, 1310/1490 nm);
• E lekanyelitsoe ho arola ka mokhoa o tlaase (ka tlase ho 1 × 8);
•Ho feto-fetoha ho hoholo ha tahlehelo libakeng tsa mocheso o phahameng;
• Theko e tlaase, e loketseng maemo a haelloang ke tekanyetso.
Leano la Khetho:
Libakeng tsa litoropo tse nang le batho ba bangata (mehaho e phahameng ea bolulo, literekeng tsa khoebo), li-splitter tsa PLC li lokela ho behoa pele ho finyella litlhoko tse phahameng tsa ho arola ha li ntse li boloka ho lumellana le lintlafatso tsa XGS-PON/50G PON.
Bakeng sa maemo a mahaeng kapa a fokolang, ho ka khethoa li-splitter tsa FBT ho fokotsa litšenyehelo tsa pele tsa ho romela. Likhakanyo tsa 'maraka li bonts'a hore karolo ea mmaraka ea PLC e tla feta 80% (LightCounting 2024), haholoholo ka lebaka la melemo ea eona ea thekenoloji ea scalability.
Moralo oa Meaho ea Marang-rang: Bohareng ho Bapana le Ho Arohakana ho Arohaneng
1. Centralized Tier-1 Splitter
•Topology: OLT → 1×32/1×64 splitter (e behiloe ka kamoreng ea lisebelisoa/FDH) → ONT.
•Maemo a sebetsang: Li-CBD tsa litoropo, libaka tsa bolulo tse nang le batho ba bangata.
•Melemo:
- ntlafatso ea 30% ea katleho ea sebaka sa liphoso;
- tahlehelo ea mohato o le mong oa 17–21 dB, e tšehetsang phetiso ea 20 km;
- Katoloso e potlakileng ea matla ka ho fetola li-splitter (mohlala, 1×32 → 1×64).
2. Ajoa Multi-Level Splitter
•Topology: OLT → 1×4 (Boemo ba 1) → 1×8 (Boemo ba 2) → ONT, e sebeletsa malapa a 32.
• Maemo a loketseng: Libaka tsa mahaeng, libaka tse lithaba, libaka tsa bolulo.
•Melemo:
- E fokotsa litšenyehelo tsa fiber ea mokokotlo ka 40%;
- E ts'ehetsa ho fokotsoa ha marang-rang a marang-rang (ho fetoha ha phoso ea lekala ka boiketsetso);
- E lumellana le sebaka se rarahaneng.
Ntlafatso ea Karohano ea Karohano: Ho Lekanya Bohole ba Phetiso le Litlhoko tsa Bandwidth
1. Concurrency ea mosebelisi le Tiisetso ea Bandwidth
Tlas'a XGS-PON (10G tlase) e nang le tlhophiso ea 1 × 64 ea li-splitter, tlhōrō ea bandwidth ka mosebedisi e ka bang 156Mbps (50% ea concurrency rate);
Libaka tse teteaneng haholo li hloka Dynamic Bandwidth Allocation (DBA) kapa sehlopha se atolositsoeng sa C++ ho ntlafatsa bokhoni.
2. Tokiso ea Ntlafatso ea Bokamoso
Boloka ≥3dB matla a optical margin ho amohela botsofali ba fiber;
Khetha li-splitter tsa PLC tse nang le likarohano tse ka feto-fetohang tsa ho arola (mohlala, tse lokisehang 1 × 32 ↔ 1 × 64) ho qoba kaho e sa hlokahaleng.
Mekhoa ea Bokamoso le Boqapi ba Theknoloji
Theknoloji ea PLC e etella pele karohano ea maemo a holimo:Ho ata ha 10G PON ho entse hore li-splitter tsa PLC li amohelehe ka mokhoa o tloaelehileng, ho tšehetsa lintlafatso tse se nang moeli ho 50G PON.
Ho amoheloa ha meralo ea Hybrid:Ho kopanya karohano ea boemo bo le bong libakeng tsa litoropo le karohano ea mekhahlelo e mengata libakeng tsa litoropo e leka-lekanya katleho ea tšireletso le litšenyehelo.
Theknoloji e bohlale ea ODN:eODN e etsa hore ho be le tlhophiso e hole ea likarohano tse arohaneng le ho bolela esale pele liphoso, e ntlafatsa bohlale ba ts'ebetso.
Katleho ea ho kopanya silicon photonics:Li-chips tsa Monolithic 32-channel PLC li fokotsa litšenyehelo ka 50%, li nolofalletsa 1 × 128 likarolo tse arohaneng tse phahameng haholo ho ntšetsa pele nts'etsopele ea toropo e bohlale.
Ka khetho ea thekenoloji e hlophisitsoeng, phepelo ea meralo e feto-fetohang, le ntlafatso e matla ea karohano, marang-rang a FTTH a ka ts'ehetsa ka nepo ho phatlalatsoa ha gigabit Broadband le litlhoko tsa ntlafatso ea theknoloji ea lilemo tse leshome tse tlang.
Nako ea poso: Sep-04-2025