I-Optical Fiber
Ikhebula le-ADSS Fiber Optic
Ikhebula le-ASU Fiber Optic
Ikhebula le-FTTH Fiber Optic
Umfanekiso 8 Intambo ye-Fiber Optic
Ikhebula le-OPGW Fiber Optic
Ikhebula le-Coaxial
Ikhebula le-Ethernet
Ikhebula le-Fiber Optic le-Photoelectric Composite
Ikhebula le-Fiber Optic elingaphansi komhlaba kanye nephayiphi
Ikhebula le-Micro Fiber Optic elivuthelwe umoya
Ikhebula le-Fiber Optic langaphakathi
Ibhokisi Lokusabalalisa le-Fiber Optic
Ibhokisi Le-Termina Lesevisi Yama-Multiport
Ibhokisi Lesiphelo Se-Fiber Optical
Ukuvalwa kwe-Fiber Optic Splice
Ama-Fiber Optic Clamps
Ukufakwa Kwezintambo Ze-Fiber Optic
Ikhebula le-ADSS Fiber
Ikhebula le-ASU Fiber
Ikhebula le-OPGW Fiber
Ikhebula le-FTTH Fiber
Umfanekiso 8 Ikhebula Le-Fiber
Ikhebula le-Fiber elihlanganisiwe le-Photoelectric
Ikhebula Le-Fiber Elingaphansi Komhlaba Nephayiphi
Ikhebula Le-Micro Fiber Elivuthelwe Ngumoya
Ikhebula Le-Fiber Yomoya
Ikhebula Le-Fiber Yangaphakathi
Ibhokisi Lesiphelo Se-Fiber Optical
Ibhokisi Lokusabalalisa le-Fiber Optic
Ibhokisi Le-Termina Lesevisi Yama-Multiport
Ama-Fiber Optic Clamps
Mayelana NATHI
Ithimba Lethu
Umlando
Amandla e-R&D
Isizinda Sokukhiqiza
Indlu Yokugcina Izinto Nokuthuthwa Kwezimpahla
Ikhwalithi
Imibuzo Evame Ukubuzwa
I-G.652D vs G.657A2 Single Mode Fiber: Umehluko Oyinhloko, Ukuqhathaniswa Kokusebenza kanye Nomhlahlandlela Wokukhetha Uhlelo Lokusebenza
2026-07-31
Ukukhetha i-fiber yemodi eyodwa engalungile kuholela ekulahlekelweni okukhulu kokukhanya, ukwehluleka kokwamukelwa kwephrojekthi, ukulungiswa kabusha okungadingekile, kanye nokutshalwa kwezimali okuchithwayo. Sekungamashumi eminyaka, G.652D futhi G.657A2 Kuye kwabusa amaphrojekthi e-fiber optic omhlaba wonke, kusukela kumanethiwekhi e-telecom backbone akude, izixhumanisi ze-metro fiber, izintambo zedatha kuya ekufakweni kwe-FTTH fiber-to-the-home. Abaphathi abaningi bokuthengwa kwempahla, onjiniyela basensimini kanye nabaklami benethiwekhi bahlala bebhekene nokudideka okufanayo: Kufanele sisebenzise nini i-G.652D fiber? Yiziphi izimo ezidinga i-G.657A2 bend-insensitive fiber? Ingabe lezi zinhlobo ezimbili ze-fiber zingahlanganiswa ndawonye kumanethiwekhi e-hybrid?
Izihloko eziningi eziku-inthanethi zibala kuphela amapharamitha obuchwepheshe ayisisekelo ngaphandle kokubhekana namaphuzu obuhlungu bobunjiniyela bangempela: ukuncishiswa kwesignali okungalindelekile okubangelwa ukugoba okuqinile, ukweqiwa kwezindleko ngenxa yokucaciswa ngokweqile, izingozi zokuhambisana ezixhumanisini zefayibha ezixubile, kanye nomklamo wekhebula ongafanele okuholela ekungazinzini kwenethiwekhi yesikhathi eside. Lo mhlahlandlela ophelele uqhathanisa i-G.652D ne-G.657A2 ngokusekelwe ezindinganisweni ezisemthethweni ze-ITU-T, ulwazi lokwakhiwa kwensimu, izindleko eziphelele zobunikazi (i-TCO), kanye nezindawo ezifanele zokuthunyelwa, kusiza ochwepheshe bemboni ukwenza izinqumo zokukhetha ifayibha eziqhutshwa idatha futhi bagweme amaphutha obunjiniyela abizayo.
1. Incazelo Eyisisekelo kanye Nesizinda Esijwayelekile se-ITU-T
1.1 I-ITU-T G.652D Fiber
I-ITU-T G.652D ihlukaniswa njenge-fiber yemodi eyodwa engeyona i-zero dispersion ene-peak ephansi yamanzi. Iyi-fiber yemodi eyodwa yendabuko esetshenziswa kabanzi emhlabeni wonke, ebekwe ngokwesincomo se-ITU-T G.652. I-G.652D isusa i-peak yokumuncwa kwamanzi eseduze ne-1383 nm, okwenza kube nokudluliselwa okuzinzile kuwo wonke ama-band okuxhumana e-O, S, C, L agcwele (1260 nm ~ 1625 nm). Kusukela yathengiswa, i-G.652D isibe yifayibha ejwayelekile yemibhobho yangaphandle, izintambo zomgogodla eziqondile nezingaphakathi emoyeni. Iqukethe i-attenuation coefficient ezinzile, ubuchwepheshe bokukhiqiza obuvuthiwe, ukuhambisana okubanzi nayo yonke imishini yokudlulisa i-optical endala, kanye nentengo enkulu encintisanayo. Kodwa-ke, umkhawulo wayo oyinhloko usekuzweleni ekulahlekelweni kokugoba okukhulu kanye nokugoba okuncane.
1.2 I-ITU-T G.657A2 Fiber
I-G.657A2 ingeyemindeni ye-G.657 yemicu yemodi eyodwa engazweli ukugoba echazwe yi-ITU-T. Iqiniso elibalulekile lobuchwepheshe: I-G.657A2 ihambisana ngokugcwele nazo zonke izincazelo ze-optical ze-G.652DNgamanye amazwi, i-G.657A2 izuza zonke izinkomba zokusebenza kokudlulisela ze-G.652D ngenkathi inezela ikhono elithuthukisiwe kakhulu lokulwa nokugoba. Izinga le-G.657 lihlukanisa imicu ekwazi ukumelana nokugoba ibe yizigaba ezimbili: Isigaba A (esihambisana ne-G.652D) kanye neSigaba B (esingazweli ukugoba okukhulu). I-G.657A2 isekela irediyasi yokugoba encane engu-7.5 mm, esebenza kahle kakhulu kune-G.657A1 (irediyasi yokugoba encane engu-10 mm). Abakhiqizi benza ngcono iphrofayili yenkomba yokukhanya kwe-fiber ukuze babambe amandla okukhanya ngaphakathi kwenhliziyo, bavimbele ukuvuza kokukhanya lapho i-fiber igobile kakhulu. Lo mklamo wenza i-G.657A2 ibe yi-fiber ekhethwayo yokuxhuma izintambo zangaphakathi, izintambo zokudonsa ze-FTTH kanye nezintambo zesikhungo sedatha ezixinene kakhulu.
2. Ukuqhathaniswa kwepharamitha yobuchwepheshe obuyinhloko
Ithebula elingezansi liqokomisa imininingwane ebalulekile ethinta ngqo ukusebenza kobunjiniyela:
| Ipharamitha | G.652D | G.657A2 | Umthelela Osebenzayo |
|---|---|---|---|
| Irediyasi encane egobile ecacisiwe | 30 mm (isimo sokuhlola esijwayelekile) | 7.5 mm | I-G.652D idala ukulahlekelwa okukhulu kakhulu uma igobile ngaphansi kwama-30 mm; I-G.657A2 igcina ukulahlekelwa okuphansi uma igobile ngokucijile |
| I-MFD @1550 nm | 9.2 ±0.4 μm | 8.8~9.2 μm | Umehluko omncane we-MFD udala ukulahlekelwa okuncane kokuxhumanisa ekuxhumaneni kwe-hybrid |
| Ubude besikhathi sokunqunywa kwekhebula | ≤1260 nm | ≤1260 nm | Ihambisana ngokugcwele, iqinisekisa ukusebenza kwemodi eyodwa kuzo zonke izintambo zokuxhumana |
| Ukuncipha okuvamile @1550nm | ≤0.20 dB/km | ≤0.21 dB/km | Ukusebenza kokudlulisa ibanga elide kucishe kufane |
| Ukulahleka kokugoba kwe-Macro (1550nm) | Ukulahlekelwa okuphezulu ngaphansi kokugoba okuqinile | Ukulahlekelwa okungaphezulu okuphansi kakhulu ekugobeni okungu-7.5mm | Igebe elikhulu lokusebenza phakathi kwezinhlobo ezimbili zefayibha |
| Isilinganiso se-PMD | ≤0.2 ps/√km | ≤0.2 ps/√km | Isekela ukudluliswa kwe-10G, 40G, 100G kuzo zombili izintambo |
| Ukumbozwa komkhawulokudonsa | Ibhendi ye-O/S/C/L | Ibhendi ye-O/S/C/L | Ukutholakala kwe-spectrum elinganayo |
Kuyadingeka ukulungisa ukungaqondi kahle okusakazekile embonini: I-G.657A2 AYI “ngcono kune-G.652D kuzo zonke izimo”. Ukulungiswa kwayo kwesakhiwo sokumelana nokugoba kuletha intengo encane yokukhiqiza. Ukusebenzisa i-G.657A2 ezinhlotsheni zomgogodla eziqondile ezikude ezinamagoba ambalwa akudingeki futhi kwandisa izindleko zephrojekthi.
3. Umehluko Oyinhloko: Amaphuzu Obuhlungu Ahlangana Nawo Emisebenzini Yangempela
3.1 Ukusebenza Okungagobile (Inzuzo Evelele Kakhulu ye-G.657A2)
Ukulahlekelwa yi-macro-golding yisona sizathu esikhulu sokwehluleka kwamaphrojekthi e-fiber optic. Lapho i-fiber ye-G.652D iphoqelelwa emakhoneni aqinile, amathreyi ekhebula amancane, amabhokisi okusabalalisa ama-optical acwebezelayo, ukujika kwe-conduit ebukhali, amandla okukhanya aphuma enkabeni ye-fiber, okubangela ukwanda kokuncipha kokukhanya. Ezimweni ezimbi kakhulu, ukuhlolwa kwe-OTDR kukhombisa izehlakalo zokulahlekelwa okungavamile, okuholela ekungamukeleki kwephrojekthi.
Izindinganiso zokwakha zidinga i-G.652D egoba unomphela i-≥30 mm, i-radius egoba ukwakhiwa kwesikhashana i-≥15 mm. Ezimweni eziningi zokuvuselelwa kwangaphakathi, izimo ze-FTTH zokuhlala, lesi sidingo kunzima ukusifeza. Abakhi bavame ukufaka i-fiber emihubheni emincane yodonga, badale ama-coil aqinile ngaphakathi kwamabhokisi e-ODF afakwe odongeni. Ukusebenzisa i-G.652D ezindaweni ezinjalo kudala amaphutha enethiwekhi afihliwe avela ezinyangeni ezimbalwa kuphela ngemva kokuqedwa.
Ngokuphambene nalokho, i-G.657A2 ingamelana nokugoba okuphindaphindiwe ku-radius engu-7.5 mm ngokulahlekelwa okwengeziwe okulawulwayo. Ochwepheshe basensimini bajabulela ukubekezelela okukhulu ukwakhiwa. Umzila oyinkimbinkimbi, ukujika okuningi, ukugoba kwekhabhinethi okuqinile akusafaki ingozi yokuwohloka kwesiginali. Lokhu kunciphisa kakhulu izindleko zokuxazulula izinkinga ngemuva kokufakwa.
3.2 Ibanga Lokudlulisa Nokufaneleka Kokuhamba Ede
Kumanethiwekhi omgogodla angaphandle akude (isiqu esivela edolobheni kuya edolobheni, izixhumanisi ze-metro core, ubude obungaphezu kwamakhilomitha angama-20), i-G.652D isalokhu iyisinqumo esivamile. Ukusebenza kwayo kokunciphisa kuphakeme kancane, futhi ukukhiqizwa kwayo ngobuningi kunciphisa izindleko zekhebula ngekhilomitha. Njengoba izintambo zomgogodla zifakwa emigudwini noma emizileni yasemoyeni enezigobe ezihleliwe nezithambile, asikho isidingo sefayibha engazweli ukugoba.
I-G.657A2 ingasekela ngobuchwepheshe ukudluliselwa kwebanga elide, kodwa izindleko ezengeziwe zefayibha zidala isabelomali sephrojekthi esingesihle. Abathengi abaningi ngephutha bathuthukisa zonke izintambo zomgogodla zibe yi-G.657A2, okubangela ukuchithwa kwemali okungadingekile.
3.3 Ukuhambisana Nokuhlukaniswa Phakathi Kwe-G.652D Ne-G.657A2
Umbuzo ovame ukubuzwa: Ingabe i-G.652D ingaxhumanisa ne-G.657A2 kusixhumanisi esifanayo se-optical? Impendulo: Yebo, ukuxutshwa kwe-hybrid kuvunyelwe, kodwa onjiniyela kumele balawule ukulahleka kokuxutshwa. Ngenxa yokwehluka okuncane kobubanzi bensimu yemodi, amapharamitha okuhlanganisa angafanele angabangela ukulahlekelwa kokufakwa okungaphezu kuka-0.3dB. Izincomo ezinhle kakhulu zokwenza lokhu:
- Sebenzisa ama-fusion splicers anamaphrofayili e-G.657 fiber splicing akhethekile;
- Ukuhlolwa okuphelele kwe-OTDR okuqondiswayo ku-1310nm kanye no-1550nm ngemva kokuxhumanisa;
- Gwema amaphuzu amaningi okushintshana phakathi kwe-G.652D ne-G.657A2 kusixhumanisi esifanayo.
Ukuhlelwa kwe-hybrid kuvamile kumanethiwekhi okufinyelela: i-G.652D yamakhebula okuhambisa angaphandle, bese i-G.657A2 ilahla amakhebula kusuka ezindaweni zokusabalalisa kuya ezindaweni zamakhasimende. Lo mklamo we-hybrid ulinganisela izindleko kanye nokusebenza kokugoba, okwamukelwa kabanzi ngabaqhubi bezokuxhumana emhlabeni jikelele.
3.4 Izindleko kanye Nomnotho Wephrojekthi Ophelele
I-fiber ye-G.657A2 eluhlaza inentengo ephezulu uma iqhathaniswa ne-G.652D ejwayelekile. Kumaphrojekthi amakhulu omgogodla wangaphandle anamakhilomitha ayizinkulungwane e-fiber, igebe lezindleko liqongelela kakhulu.
Kodwa-ke, ukuhlaziywa kwezindleko akugcini nje ngokugxila entengo yefayibha eluhlaza. Sidinga ukuhlola izindleko eziphelele zobunikazi:
- Uma isetshenziswa ezindaweni zangaphakathi, ezinama-multi-gobe: I-G.657A2 igwema ukuphinde ilungiswe, inciphisa ingozi yokwehluleka kokwakha, yehlisa izindleko zokusebenza nokugcinwa kwesikhathi eside. Izindleko eziphezulu zefayibha kusengaphambili ziyafaneleka.
- Imizila ye-trunk eqondile yangaphandle: I-G.652D inikeza ukusebenza okufanayo kokudlulisela ngezindleko eziphansi zezinto.
4. Izimo Zokusebenza Ezinconyiwe
Isikhathi Sokukhetha I-G.652D Fiber
- Izintambo zomgogodla ze-telecom ezikude, izintambo ze-metro feeder (i-duct, i-direct buried, izintambo ze-aerial GYTA, i-GYTS, izintambo ze-GYFTY);
- Imigqa ye-broadband yasemakhaya, umgogodla wangaphandle wekhampasi, izixhumanisi ze-fiber ezikude zokuqapha umgwaqo omkhulu;
- Amaphrojekthi anendlela eqondile, imisele yekhebula esezingeni elifanele, isikhala esanele sokugoba;
- Amaphrojekthi engqalasizinda amakhulu athinta isabelomali sezinto ezibonakalayo.
Isikhathi Sokukhetha I-G.657A2 Fiber
- Izintambo zokudonsa ze-FTTH, izintambo zokuphakamisa zangaphakathi, izintambo zasekhaya, amanethiwekhi okusabalalisa okukhanya kwesakhiwo sendawo yokuhlala;
- Izintambo zekhabhinethi ezibanzi kakhulu zesikhungo sedatha, izintambo zokubopha, izintambo eziqondile nezivundlile;
- Amaphrojekthi okuvuselela izakhiwo anemihubhe emincane, amakhona amaningi, isikhala esincane sokufakwa;
- Ukuqapha ezokuphepha ngaphakathi kwezakhiwo, izintambo zokuhamba ze-lifti, izintambo zangaphakathi zemishini yezimboni;
- Imihlangano yefayibha eqediwe kusengaphambili, amabhokisi e-terminal acwebezelayo adinga ukugoqwa kwefayibha exinene.
5. Izingibe Ezivamile Zemboni Okufanele Zigwenywe
Ingozi 1: Sebenzisa i-G.657A2 ngokulinganayo kuzo zonke izintambo
Abathengi abaningi benza kube lula ukuthenga ngoku-oda i-G.657A2 kuphela kulo lonke iphrojekthi. Nakuba kungenzeka ngokobuchwepheshe, lokhu kwandisa isabelomali sezintambo zangaphandle ezihamba isikhathi eside ngaphandle kwezinselele zokugoba. Isixazululo esilungiselelwe: Umklamo wenethiwekhi ehlanganisiwe: I-feeder yangaphandle ye-G.652D + ikhebula langaphakathi/lokudonsa le-G.657A2.
I-Pitfall 2: Shintsha i-G.657A2 nge-G.652D eshibhile ezintambo zangaphakathi
Abanye abahlinzeki banciphisa izindleko ngokufaka izintambo zangaphakathi ze-G.652D esikhundleni sezintambo zangaphakathi ze-G.657A2. Ngemva kokwakhiwa, amakhasimende abhekene nokuxhumeka kwe-inthanethi okungazinzile, ukulahleka kwephakethe, amandla okukhanya ashintshashintshayo. Ukuxilongwa kwephutha kunzima ngoba izinkinga zokunciphisa zivela kuphela ngemva kokuba i-fiber ilungisiwe ngaphakathi kwezindonga noma emiseleni. Ukufakwa esikhundleni kudinga ukwakhiwa okubhubhisayo, ukulahlekelwa okukhulu. Abathengi kumele bacele imibiko yokuhlolwa kwe-fiber ukuqinisekisa izinkomba zokulahleka kokugoba ngaphambi kokuthunyelwa.
Ingozi 3: Unganaki izidingo zerediyasi yokugoba ye-G.652D ngesikhathi sokwakha
Ngisho noma kunekhebula le-G.652D elisezingeni eliphezulu, ukufakwa okungafanele njengokugoba okubukhali, izibopho zekhebula eziqinile, ukugoba okunerediyasi encane kuzolimaza unomphela ukusebenza kwesixhumanisi. Abaphathi bensimu kumele baqinisekise ukucaciswa okuncane kwerediyasi yokugoba.
Ingozi 4: Ukunganaki ukuphathwa kokulahlekelwa kwe-splicing kuzixhumanisi ze-hybrid fiber
Ama-splice amaningi ashintshana phakathi kokulahlekelwa kokufakwa kwe-stack ye-G.652D ne-G.657A2, okunciphisa ibanga lokudlulisa eliphezulu. Abaklami benethiwekhi kufanele banciphise amaphuzu e-splice e-hybrid lapho kungenzeka khona.
6. Isifinyezo kanye nohlu lokuhlola lokukhetha kokugcina
I-G.652D kanye ne-G.657A2 akuzona izindlela zokuncintisana lapho enye isebenza kahle kakhulu kunenye. Ukukhetha okulungile kuncike ekwakhiweni kwendlela, indawo yokufaka, izimo zokugoba kanye nesabelomali sephrojekthi.
Uhlu Lokuhlola Izinqumo Ezisheshayo: Umgogodla wangaphandle oqhele ibanga elide, umzila olula → G.652D Izintambo zangaphakathi, ikhebula lokudonsa le-FTTH, amakhona aqinile, amakhabethe amancane → G.657A2 Inethiwekhi yokufinyelela exubile: i-feeder yangaphandle + ikhebula lomsebenzisi wangaphakathi → Isakhiwo se-hybrid (G.652D + G.657A2) Indawo elinganiselwe yokugoba, ubunjiniyela bokuvuselela obuyinkimbinkimbi → Beka phambili i-G.657A2 Ingqalasizinda enkulu yesiqu enokulawulwa kwezindleko okuqinile → Beka phambili i-G.652D
Njengoba isidingo somhlaba wonke se-FTTH, i-edge computing kanye nokwandiswa kwesikhungo sedatha kuqhubeka nokukhula, onjiniyela be-fiber optic bazoqhubeka nokusebenzisa zombili izinhlobo ze-fiber. Ukuqonda umngcele wezobuchwepheshe phakathi kwe-G.652D ne-G.657A2 kususa amaphutha okucacisa, kuthuthukisa ukuthembeka kwenethiwekhi futhi kuthuthukisa ukusetshenziswa kwemali.
Isigaba Semibuzo Ebuzwa Njalo (Isiqephu Esivelele Sika-Google kanye Nethrafikhi Ende Yomsila)
Umbuzo 1: Ingabe i-G.657A2 ingasebenzisa ukudluliselwa kwe-100G/400G okufanayo ne-G.652D?
A1: Yebo. I-G.657A2 ihlangabezana nazo zonke izindinganiso ze-G.652D, isekela ukudluliswa okuqondile kwe-10G, 40G, 100G ngaphansi kwemikhawulo yebanga elifanayo.
UMBUZO 2: Uyini umehluko phakathi kwe-G.657A1 ne-G.657A2?
A2: Irediyasi yokugoba encane ye-G.657A1 ingu-10 mm; I-G.657A2 ifinyelela ku-7.5 mm, ukusebenza okungcono kokulwa nokugoba ukuze kusetshenziswe isikhala esincane esinzima.
Umbuzo 3: Ingabe i-G.657A2 inokulahlekelwa okukhulu kwesiginali kune-G.652D emizileni eqondile?
A3: Ngaphansi kwezimo eziqondile, ezingagobi, umehluko wokunciphisa uphansi kakhulu (ngaphansi kuka-0.01 dB/km). Igebe lokulahlekelwa livela kuphela uma kwenzeka ukugoba okuqinile.
Q4: Ngingayisebenzisa yini i-fiber ye-G.652D kuma-patch cords angaphakathi?
A4: Akukhuthazwa. Izintambo zokubopha zivame ukugoqwa ngaphakathi kwama-rack. Ukugoba okuncane kuzoletha ukulahlekelwa okwengeziwe okuqhubekayo, okuthinta ukuzinza kwesistimu.
