Ninu ikole nẹtiwọọki fiber-to-the-home (FTTH), awọn pipin opiti, bi awọn paati pataki ti awọn nẹtiwọọki opitika palolo (PONs), jẹ ki pinpin olumulo pupọ ti okun kan nipasẹ pinpin agbara opiti, ni ipa taara iṣẹ nẹtiwọọki ati iriri olumulo. Nkan yii ṣe itupalẹ awọn imọ-ẹrọ pataki ni igbero FTTH lati awọn iwo mẹrin: yiyan imọ-ẹrọ splitter opiti, apẹrẹ faaji nẹtiwọọki, iṣapeye ipin ipin, ati awọn aṣa iwaju.
Aṣayan Splitter Optical: PLC ati FBT Technology Comparision
1. Planar Lightwave Circuit (PLC) Splitter:
• Atilẹyin kikun-band (1260-1650 nm), o dara fun awọn ọna ṣiṣe gigun-pupọ;
• Ṣe atilẹyin pipin aṣẹ-giga (fun apẹẹrẹ, 1 × 64), pipadanu ifibọ ≤17 dB;
• Iduroṣinṣin iwọn otutu (-40 ° C si 85 ° C iyipada <0.5 dB);
• Iṣakojọpọ kekere, botilẹjẹpe awọn idiyele ibẹrẹ ga ni iwọn.
2. Fipo Biconical Taper (FBT) Pipin:
Atilẹyin nikan kan pato wefulenti (fun apẹẹrẹ, 1310/1490 nm);
• Ni opin si pipin-ibere-kekere (labẹ 1 × 8);
• Ipadanu pipadanu pataki ni awọn agbegbe otutu otutu;
• Iye owo kekere, o dara fun awọn oju iṣẹlẹ ti o ni ihamọ isuna.
Ilana yiyan:
Ni awọn agbegbe ti o ga julọ ti ilu (awọn ile gbigbe ti o ga julọ, awọn agbegbe iṣowo), awọn pipin PLC yẹ ki o wa ni pataki lati pade awọn ibeere pipin ti o ga julọ nigba mimu ibamu pẹlu awọn igbesoke XGS-PON / 50G PON.
Fun awọn oju iṣẹlẹ igberiko tabi iwuwo kekere, awọn pipin FBT le jẹ yiyan lati dinku awọn idiyele imuṣiṣẹ akọkọ. Awọn asọtẹlẹ ọja tọkasi ipin ọja PLC yoo kọja 80% (LightCounting 2024), ni akọkọ nitori awọn anfani iwọn imọ-ẹrọ rẹ.
Apẹrẹ faaji Nẹtiwọọki: Centralized dipo Pipin Pinpin
1. Centralized Ipele-1 Splitter
• Topology: OLT → 1× 32/1×64 splitter (ti a fi ranṣẹ si yara ẹrọ / FDH) → ONT.
• Awọn oju iṣẹlẹ ti o wulo: Awọn CBD ilu, awọn agbegbe ibugbe iwuwo giga.
• Awọn anfani:
- 30% ilọsiwaju ni ṣiṣe ipo aṣiṣe;
- Ipadanu ipele-ọkan ti 17-21 dB, atilẹyin gbigbe 20 km;
- Imugboroosi agbara iyara nipasẹ rirọpo pipin (fun apẹẹrẹ, 1×32 → 1×64).
2. Pipin Olona-Level Splitter
•Topology: OLT → 1×4 (Ipele 1) → 1×8 (Ipele 2) → ONT, sìn 32 ìdílé.
• Awọn oju iṣẹlẹ ti o yẹ: Awọn agbegbe igberiko, awọn agbegbe oke-nla, awọn ohun-ini abule.
• Awọn anfani:
- Din awọn iye owo okun ẹhin pada nipasẹ 40%;
- Ṣe atilẹyin isanpada nẹtiwọọki oruka (iyipada aṣiṣe ẹka aifọwọyi);
- Adaptable si eka ibigbogbo.
Iṣapeye ti ipin Pipin: Iwontunwonsi Ijinna Gbigbe ati Awọn ibeere Bandiwidi
1. Olumulo Concurrency ati idaniloju Bandiwidi
Labẹ XGS-PON (10G ibosile) pẹlu iṣeto ni pipin 1 × 64, bandiwidi tente oke fun olumulo jẹ isunmọ 156Mbps (oṣuwọn 50% concurrency);
Awọn agbegbe iwuwo giga nilo Ipin Bandiwidi Yiyiyi (DBA) tabi ẹgbẹ C ++ ti o gbooro lati mu agbara pọ si.
2. Ipese Igbesoke ojo iwaju
Ifipamọ ≥3dB ala agbara opiti lati gba ọjọ ogbó okun;
Yan PLC splitters pẹlu adijositabulu yapa ratio (fun apẹẹrẹ, Configurable 1×32 ↔ 1×64) lati yago fun ikoledanu.
Awọn aṣa iwaju ati Innovation Imọ-ẹrọ
Imọ-ẹrọ PLC ṣe itọsọna pipin aṣẹ-giga:Ilọsiwaju ti 10G PON ti tan awọn pipin PLC sinu isọdọmọ akọkọ, atilẹyin awọn iṣagbega ailopin si 50G PON.
Isomọ arabara faaji:Pipọpọ pipin ipele ẹyọkan ni awọn agbegbe ilu pẹlu pipin ipele pupọ ni awọn agbegbe igberiko ṣe iwọntunwọnsi ṣiṣe ati idiyele agbegbe.
Imọ-ẹrọ ODN ti oye:eODN ngbanilaaye atunto latọna jijin ti awọn ipin pipin ati asọtẹlẹ aṣiṣe, imudara oye iṣẹ ṣiṣe.
Aṣeyọri isọpọ Silicon photonics:Awọn eerun PLC-ikanni Monolithic 32-ikanni PLC dinku awọn idiyele nipasẹ 50%, muu ṣiṣẹ 1 × 128 awọn ipin pipin ultra-giga lati ni ilọsiwaju gbogbo idagbasoke ilu ọlọgbọn opiti.
Nipasẹ yiyan imọ-ẹrọ ti a ṣe deede, imuṣiṣẹ ayaworan ti o rọ, ati iṣapeye ipin pipin ti o ni agbara, awọn nẹtiwọọki FTTH le ṣe atilẹyin ni imunadoko gigabit broadband rollout ati awọn ibeere itankalẹ imọ-ẹrọ gigun ti ọdun mẹwa iwaju.
Akoko ifiweranṣẹ: Oṣu Kẹsan-04-2025