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Thumela uPhando ukuze ukhuphele iPhepha leDatha yeMveliso

I-G.652D vs G.657A2 Single Mode Fiber: Umahluko oPhambili, Uthelekiso loKusebenza kunye neSikhokelo soKhetho lweSicelo

2026-07-31
Ukukhetha ifayibha yemowudi enye engalunganga kukhokelela ekulahlekelweni kakhulu kwe-optical, ukungaphumeleli kokwamkelwa kweprojekthi, ukuphinda kulungiswe ngokungeyomfuneko, kunye nokuchithwa kwemali-mali. Kangangamashumi eminyaka, G.652D kwaye G.657A2 Ziye zalawula iiprojekthi ze-fiber optic zehlabathi, ukusuka kwiinethiwekhi ze-telecom backbone ezikude, ii-metro fiber links, i-data center cables ukuya kwi-FTTH fiber-to-the-home deployment. Abaphathi abaninzi bokuthenga, iinjineli zasemaphandleni kunye nabayili benethiwekhi bahlala bejongene nokudideka okufanayo: Sifanele siyisebenzise nini i-G.652D fiber? Zeziphi iimeko ezifuna i-G.657A2 bend-insensitive fiber? Ngaba ezi ntlobo zimbini ze-fiber zinokudityaniswa kunye kwiinethiwekhi ze-hybrid?
Uninzi lwamanqaku akwi-intanethi adwelisa kuphela iiparameter zobugcisa ezisisiseko ngaphandle kokujongana namanqaku okwenyani obunzima bobunjineli: ukuncitshiswa kwesignali okungalindelekanga okubangelwa kukugoba okuqinileyo, ukugqithiswa kweendleko ngenxa yokuchazwa okugqithisileyo, iingozi zokuhambelana kwiikhonkco zefayibha ezixutyiweyo, kunye noyilo olungafanelekanga lwentambo olukhokelela ekungazinzini kwenethiwekhi ixesha elide. Esi sikhokelo sibanzi sithelekisa i-G.652D kunye ne-G.657A2 ngokusekelwe kwimigangatho esemthethweni ye-ITU-T, amava okwakha intsimi, iindleko zizonke zobunini (TCO), kunye neendawo ezifanelekileyo zokusasazwa, ukunceda iingcali zoshishino ukuba zenze izigqibo zokukhetha ifayibha eziqhutywa yidatha kwaye ziphephe iimpazamo zobunjineli ezibizayo.
g652d.jpg

1. Inkcazo esisiseko kunye neMvelaphi esemgangathweni ye-ITU-T

1.1 I-ITU-T G.652D Fiber

I-ITU-T G.652D ihlelwa njenge-fiber ye-single-mode engaphantsi kwamanzi amaninzi kwaye ingenazo i-zero dispersion. Yeyona fiber ye-single-mode eqhelekileyo esetyenziswa kakhulu kwihlabathi liphela, imiselwe ngokwengcebiso ye-ITU-T G.652. I-G.652D isusa incopho yokufunxwa kwamanzi kufutshane ne-1383 nm, ivumela ukuhanjiswa okuzinzileyo kwiibhendi zonxibelelwano ze-O, S, C, L ezipheleleyo (1260 nm ~ 1625 nm).
Ukususela oko yathengiswa, i-G.652D iye yaba yifayibha eqhelekileyo yemibhobho yangaphandle, iintambo zomqolo ezingcwatywe ngqo kunye nezomoya. Iqulethe i-attenuation coefficient ezinzileyo, iteknoloji yokuvelisa evuthiweyo, ukuhambelana okubanzi nazo zonke izixhobo zokudlulisa i-optical ezindala, kunye namaxabiso amakhulu akhuphisanayo. Nangona kunjalo, umda wayo oyintloko uxhomekeke ekubuthathaka kwilahleko ye-macro-bending kunye ne-micro-bending.

1.2 I-ITU-T G.657A2 Fiber

I-G.657A2 ikwintsapho ye-G.657 yeefayibha zemowudi enye ezingenakuvakalelwa yi-bend-insensitive ezichazwe yi-ITU-T. Inyani ebalulekileyo yobugcisa: I-G.657A2 ihambelana ngokupheleleyo nazo zonke iinkcukacha ze-optical ze-G.652DNgamanye amazwi, i-G.657A2 ifumana zonke izalathisi zokusebenza kothumelo lwe-G.652D ngelixa yongeza amandla aphucukileyo kakhulu okulwa nokugoba.
Umgangatho we-G.657 wahlula iifayibha ezimelana nokugoba zibe ziindidi ezimbini: Udidi A (oluhambelana ne-G.652D) kunye nodidi B (olungenamvakalelo yokugoba kakhulu). I-G.657A2 ixhasa irediyasi egobayo encinci ye-7.5 mm, iphumelela ngaphezu kwe-G.657A1 (irediyasi egobayo encinci ye-10 mm). Abavelisi balungisa iprofayili yesalathisi se-fiber refractive ukuze babambe amandla okukhanya ngaphakathi kwentliziyo, bethintela ukuvuza kokukhanya xa ifayibha igobile kakhulu. Olu yilo lwenza i-G.657A2 ibe yifayibha ekhethwayo yocingo oluxineneyo lwangaphakathi, iintambo ze-FTTH drop kunye neentambo zedatha ezixineneyo kakhulu.

2. Uthelekiso lweParamitha yoBugcisa obuPhambili

Le theyibhile ingezantsi igxininisa iinkcukacha ezibalulekileyo ezichaphazela ngqo ukusebenza kobunjineli:
Ipharamitha G.652D G.657A2 Impembelelo Esebenzayo
Ubuncinane berediyasi egobileyo echaziweyo 30 mm (imeko yovavanyo eqhelekileyo) 7.5 mm I-G.652D ivelisa ilahleko enkulu eyongezelelweyo xa igobile ngaphantsi kwe-30 mm; I-G.657A2 igcina ilahleko ephantsi xa igobile ngokubukhali
I-MFD @1550 nm 9.2 ± 0.4 μm 8.8~9.2 μm Umahluko omncinci we-MFD udala ilahleko encinci yokudibanisa kwiikhonkco ze-hybrid
Ubude bexesha lokunqunyulwa kwentambo ≤1260 nm ≤1260 nm Ihambelana ngokupheleleyo, iqinisekisa ukusebenza kwemowudi enye kuzo zonke iibhendi zonxibelelwano
Ukuncipha okuqhelekileyo @1550nm ≤0.20 dB/km ≤0.21 dB/km Ukusebenza kothumelo lomgama omde kuphantse kufane
Ukulahleka kwe-Macro-going (1550nm) Ukulahleka okuphezulu phantsi kwe-tight bend Ukulahleka okungaphezulu okuphantsi kakhulu ekugobeni kwe-7.5mm Umsantsa omkhulu wokusebenza phakathi kweentlobo ezimbini zefayibha
I-PMD Coefficient ≤0.2 ps/√km ≤0.2 ps/√km Ixhasa ukuhanjiswa kwe-10G, 40G, 100G kuzo zombini iifayibha
Ububanzi bebhendi Ibhendi ye-O/S/C/L Ibhendi ye-O/S/C/L Ukufumaneka kwe-spectrum elinganayo
Kuyimfuneko ukulungisa ukungaqondani okuxhaphakileyo kushishino: I-G.657A2 AYIKHO “ngcono kune-G.652D kuzo zonke iimeko”. Ukulungiswa kwayo kolwakhiwo lokumelana nokugoba kuzisa ixabiso elincinci lokuvelisa. Ukusebenzisa i-G.657A2 kwiikhonkco ezithe tye zomqolo ezikude ezineegobe ezimbalwa akuyomfuneko kwaye kunyusa iindleko zeprojekthi.

3. Umahluko oPhambili: Amanqaku eNtlungu afunyanwa kwiiprojekthi zokwenyani

3.1 Ukusebenza Okuchasene Nokugoba (Eyona Nzuzo Ibalaseleyo ye-G.657A2)

Ukulahleka kwe-macro-gold yeyona nto iphambili ebangela ukungaphumeleli kweeprojekthi ze-fiber optic. Xa i-G.652D fiber inyanzelwa kwiikona ezixineneyo, iitreyi ezincinci zekhebula, iibhokisi zokusasazwa kwe-compact optical, ukujika kwe-conduit ebukhali, amandla okukhanya aphuma kwi-fiber core, okubangela ukunyuka kokuncipha kwe-optical. Kwiimeko ezinzima, uvavanyo lwe-OTDR lubonisa iziganeko zokulahleka okungaqhelekanga, okubangela ukungamkeleki kweprojekthi.
Imigangatho yokwakha ifuna i-G.652D ehlala igobile i-≥30 mm, i-radius egobileyo yokwakha yexeshana i-≥15 mm. Kwiimeko ezininzi zokulungiswa kwangaphakathi, kwiimeko ze-FTTH zokuhlala, le mfuneko kunzima ukuyifezekisa. Abakhi badla ngokucinezela ifayibha kwiindlela ezincinci zodonga, benze iikhoyili eziqinileyo ngaphakathi kweebhokisi ze-ODF ezifakwe eludongeni. Ukusebenzisa i-G.652D kwiindawo ezinjalo kudala iimpazamo zenethiwekhi ezifihlakeleyo ezibonakala kuphela emva kweenyanga ezimbalwa kugqityiwe.
Ngokwahlukileyo koko, i-G.657A2 inokumelana nokugoba okuphindaphindiweyo kwi-radius ye-7.5 mm kunye nokulahleka okongeziweyo okulawulwayo. Iingcali zasentsimini zinokunyamezela okukhulu ukwakhiwa. Indlela enzima, ukujika okuphindaphindiweyo, ukujijeka kwekhabhinethi encinci akusayi kuba yingozi yokuwohloka kwesignali. Oku kunciphisa kakhulu iindleko zokusombulula iingxaki emva kokufakelwa.

3.2 Umgama woThutho kunye nokufaneleka kohambo olude

Kwinethiwekhi zomqolo ezikude zangaphandle (i-trunk ukusuka kwisixeko ukuya kwisixeko, ii-metro core links, ubude obungaphezulu kwe-20 km), i-G.652D iseyeyona ndlela iphambili. Ukusebenza kwayo kokunciphisa umzimba kuphezulu kancinci, kwaye imveliso enkulu yehlisa iindleko zekhebula ngekhilomitha nganye. Ekubeni iintambo zomqolo zifakelwe kwiipayipi okanye kwiindlela zomoya ezinee-goes ezicwangcisiweyo nezithambileyo, akukho mfuneko yefayibha engayivayo i-going.
I-G.657A2 inokuxhasa ngobuchwephesha ukuhanjiswa kombane okude, kodwa iindleko zefayibha eyongezelelweyo zidala uhlahlo-lwabiwo mali lweprojekthi olungenandleko. Abathengi abaninzi ngempazamo baphucula zonke iintambo zomqolo zibe yi-G.657A2, nto leyo ebangela inkcitho yemali engeyomfuneko.

3.3 Ukuhambelana kunye nokudibanisa phakathi kwe-G.652D kunye ne-G.657A2

Umbuzo obuzwa rhoqo: Ngaba i-G.652D ingadibanisa ne-G.657A2 kwikhonkco elifanayo le-optical?
Impendulo: Ewe, i-hybrid splicing ivumelekile, kodwa iinjineli kufuneka zilawule ukulahleka kwe-splicing.
Ngenxa yomahluko omncinci kububanzi bentsimi ye-mode, iiparameters zokuqhawula ezingafanelekanga zinokubangela ilahleko yokufakwa ngaphezulu kwe-0.3dB. Iingcebiso ezilungileyo zokusebenza:
  1. Sebenzisa ii-fusion splicers ezineeprofayili ze-G.657 fiber splicing ezizinikeleyo;
  2. Uvavanyo lwe-OTDR olupheleleyo oluya kwicala elinye kwi-1310nm kunye ne-1550nm emva kokudibanisa;
  3. Ziphephe iindawo ezininzi ezitshintshanayo phakathi kwe-G.652D kunye ne-G.657A2 kwikhonkco elinye.
Uyilo lwe-hybrid luqhelekile kwiinethiwekhi zokufikelela: i-G.652D yeentambo ze-feeder zangaphandle, ize i-G.657A2 ilahle iintambo ukusuka kwiindawo zokusasaza ukuya kwiindawo zabathengi. Olu yilo lwe-hybrid lulinganisela iindleko kunye nokusebenza okugobileyo, okwamkelwe kakhulu ngabaqhubi beenkonzo zonxibelelwano zehlabathi.

3.4 Ixabiso kunye noQoqosho lweProjekthi iyonke

Ifayibha ye-G.657A2 eluhlaza inexabiso eliphezulu xa ithelekiswa ne-G.652D eqhelekileyo. Kwiiprojekthi ezinkulu zangaphandle ezineekhilomitha ezingamawaka zefayibha, umsantsa weendleko uqokeleleka kakhulu.
Nangona kunjalo, uhlalutyo lweendleko alunakugxila kuphela kwixabiso lefayibha eluhlaza. Kufuneka sivavanye iindleko zizonke zobunini:
  • Ukuba isetyenziswa ngaphakathi, kwiindawo ezigobileyo ezininzi: I-G.657A2 iyakuphepha ukuphinda isetyenzwe, inciphisa umngcipheko wokusilela kokwakha, inciphisa iindleko zokusebenza kunye nokugcinwa kwexesha elide. Ixabiso eliphezulu lefayibha kwangaphambili liyathetheleleka.
  • Iindlela ezithe tye zangaphandle: I-G.652D inika ukusebenza okufanayo kothumelo kunye neendleko eziphantsi zezinto.

4. Iimeko ezicetyiswayo zesicelo

Ixesha lokukhetha i-G.652D Fiber

  1. Iintambo zomqadi zetelecom ezikude, iintambo zemetro feeder (i-duct, i-direct waved, i-aerial GYTA, iintambo zeGYTS, iGYFTY);
  2. Imigca ye-broadband yasemaphandleni, umqolo wangaphandle wekhampasi, ukujonga ii-fiber zomgama omde kwindlela enkulu;
  3. Iiprojekthi ezinendlela ethe tye, imisele yentambo esemgangathweni, indawo eyaneleyo yokugoba;
  4. Iiprojekthi ezinkulu zeziseko zophuhliso ezichaphazela uhlahlo lwabiwo-mali lwezinto eziphathekayo.

Ixesha lokukhetha i-G.657A2 Fiber

  1. Iintambo zokulahla ze-FTTH, iintambo zokuphakamisa izinto zangaphakathi, iintambo zasekhaya, iinethiwekhi zokusasazwa kwe-optical kwizakhiwo zokuhlala;
  2. Iintambo zekhabhinethi ezinoxinano oluphezulu kwiziko ledatha, iintambo zepetshi, iingcingo ezicwangcisiweyo ngokuthe nkqo nangokuthe tye;
  3. Iiprojekthi zokuhlaziya izakhiwo ezineepayipi ezimxinwa, iikona ezininzi, indawo encinci yokufaka;
  4. Ukubeka iliso kukhuseleko ngaphakathi kwizakhiwo, iintambo zokuhamba zelifti, iingcingo zangaphakathi zezixhobo zoshishino;
  5. Iindibano zefayibha ezipheliswe kwangaphambili, iibhokisi zesiphelo ze-compact optical ezifuna ukujijeka kwefayibha exineneyo.

5. Iingxaki Eziqhelekileyo Zoshishino Okufanele Ziphetshwe

Ingxaki 1: Sebenzisa i-G.657A2 ngokulinganayo kuzo zonke iintambo

Abathengi abaninzi benza kube lula ukuthenga ngoku-odola i-G.657A2 kuphela kulo lonke iprojekthi. Nangona kunokwenzeka ngokwetekhnoloji, oku kwandisa uhlahlo lwabiwo-mali lweentambo ezinde zangaphandle ngaphandle kwemingeni yokugoba. Isisombululo esilungiselelweyo: Uyilo lwenethiwekhi ye-hybrid: I-G.652D yangaphandle kunye nentambo yangaphakathi/yokulahla i-G.657A2.

Ingxaki yesi-2: Buyisela i-G.657A2 nge-G.652D engabizi kakhulu kwiintambo zangaphakathi

Abanye ababoneleli banciphisa iindleko ngokufaka iintambo zangaphakathi ze-G.652D endaweni yeentambo zangaphakathi ze-G.657A2. Emva kokwakhiwa, abathengi bajongana nonxibelelwano lwe-intanethi olungazinzanga, ukulahleka kwepakethi, amandla okukhanya atshintshatshintshayo. Ukuxilongwa kwempazamo kunzima kuba iingxaki zokunciphisa umbane zivela kuphela emva kokuba ifayibha ilungisiwe ngaphakathi kweendonga okanye kwiipayipi. Ukutshintshwa kufuna ulwakhiwo olutshabalalisayo, ilahleko enkulu. Abathengi kufuneka bacele iingxelo zovavanyo lwefayibha ukuqinisekisa izalathisi zokulahleka kwegophe ngaphambi kokuthunyelwa.

Umngxunya 3: Ungazinaki iimfuno zerediyasi yokugoba ye-G.652D ngexesha lokwakha

Nokuba kukho intambo ye-G.652D ekumgangatho ophezulu, ukufakelwa okungafanelekanga okufana nokugoba okubukhali, ukubopha intambo okuqinileyo, ukujijeka kwe-radius encinci kuya konakalisa ukusebenza kwekhonkco ngokusisigxina. Abaphathi bentsimi kufuneka baqinisekise ukuba iinkcukacha ze-radius ezigobileyo zincinci.

Ingxaki yesi-4: Ukungahoyi ulawulo lokulahleka kwe-splicing kwiikhonkco ze-hybrid fiber

Ii-splices ezininzi ezitshintshanayo phakathi kwe-G.652D kunye ne-G.657A2 stack loss, nto leyo enciphisa umgama ophezulu wokudluliselwa. Abayili benethiwekhi kufuneka banciphise amanqaku e-hybrid splice apho kunokwenzeka khona.

6. Uluhlu lokuHlola oluSishwankathelo kunye noHlobo lokuGqibela loKhetho

I-G.652D kunye ne-G.657A2 azizo iindlela zokhuphiswano apho enye isebenza ngcono kunenye ngokubanzi. Ukukhetha okuchanekileyo kuxhomekeke kuyilo lwendlela, imeko yokufakela, iimeko zokugoba kunye nohlahlo-lwabiwo mali lweprojekthi.
Uluhlu Lokujonga Izigqibo Ezikhawulezileyo:
Umqolo ongaphandle omgama omde, indlela elula → G.652D
Iingcingo zangaphakathi, intambo yokulahla ye-FTTH, iikona eziqinileyo, iikhabhathi ezincinci → G.657A2
Inethiwekhi yokufikelela exutyiweyo: i-feeder yangaphandle + intambo yomsebenzisi yangaphakathi → Uyilo lwe-hybrid (G.652D + G.657A2)
Indawo egobileyo encinci, ubunjineli bokuhlaziya obunzima → Beka phambili i-G.657A2
Iziseko zophuhliso ezinkulu ezinolawulo olungqongqo lweendleko → Beka phambili i-G.652D
Njengoko imfuno yehlabathi ye-FTTH, i-edge computing kunye nokwandiswa kweziko ledatha kuqhubeka nokukhula, iinjineli ze-fiber optic ziya kuqhubeka nokusebenzisa zombini iintlobo zefayibha. Ukuqonda umda wobugcisa phakathi kwe-G.652D kunye ne-G.657A2 kususa iimpazamo zeenkcukacha, kuphucula ukuthembeka kwenethiwekhi kwaye kuphucula inkcitho yemali.

Icandelo le-FAQ (Isicatshulwa esiPhambili seGoogle kunye neTrafikhi ende)

Umbuzo 1: Ngaba i-G.657A2 ingasebenzisa i-transmission ye-100G/400G efanayo ne-G.652D?

A1: Ewe. I-G.657A2 iyahlangabezana nayo yonke imigangatho ye-G.652D, ixhasa uthumelo oluhambelanayo lwe-10G, 40G, 100G phantsi kwemida efanayo yomgama.

Umbuzo 2: Yintoni umahluko phakathi kwe-G.657A1 kunye ne-G.657A2?

A2: I-G.657A1 ubuncinane i-radius yokugoba yi-10 mm; I-G.657A2 ifikelela kwi-7.5 mm, ukusebenza okungcono kokulwa nokugoba ukuze kube lula ukuseta indawo emxinwa.

Umbuzo 3: Ingaba i-G.657A2 inokulahleka okuphezulu kwesiginali kune-G.652D kwiindlela ezithe tye?

A3: Phantsi kweemeko ezithe tye, ezingagobiyo, umahluko wokunciphisa umzimba awunamsebenzi (ngaphantsi kwe-0.01 dB/km). Umsantsa wokulahleka uvela kuphela xa kugoba ngokuqinileyo.

Umbuzo 4: Ndingayisebenzisa ifayibha ye-G.652D kwiintambo zepetshi zangaphakathi?

A4: Akukhuthazwa. Iintambo zokubopha zihlala zibotshelelwe ngaphakathi kwiirakhi. Ukugoba okuncinci kuya kubangela ilahleko eyongezelelweyo eqhubekayo, nto leyo echaphazela uzinzo lwenkqubo.

Qhagamshelana Nathi, Fumana Iimveliso Ezisemgangathweni kunye Nenkonzo Ecokisekileyo.

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Funda ngokugqithisileyo
2026-07-31

Ukukhetha ifayibha yemowudi enye engalunganga kukhokelela ekulahlekelweni kakhulu kwe-optical, ukungaphumeleli kokwamkelwa kweprojekthi, ukuphinda kulungiswe ngokungeyomfuneko, kunye nokuchithwa kwemali-mali. Kangangamashumi eminyaka, G.652D kwaye G.657A2 Ziye zalawula iiprojekthi ze-fiber optic zehlabathi, ukusuka kwiinethiwekhi ze-telecom backbone ezikude, ii-metro fiber links, i-data center cables ukuya kwi-FTTH fiber-to-the-home deployment. Abaphathi abaninzi bokuthenga, iinjineli zasemaphandleni kunye nabayili benethiwekhi bahlala bejongene nokudideka okufanayo: Sifanele siyisebenzise nini i-G.652D fiber? Zeziphi iimeko ezifuna i-G.657A2 bend-insensitive fiber? Ngaba ezi ntlobo zimbini ze-fiber zinokudityaniswa kunye kwiinethiwekhi ze-hybrid?