Nokuba ukudibanisa uluntu okanye amazwekazi aqalayo, isantya kunye nokuchaneka zizinto ezimbini ezibalulekileyo zothungelwano lwefiber optic ezithwala unxibelelwano lomsebenzi obalulekileyo. Abasebenzisi bafuna amakhonkco e-FTTH akhawulezayo kunye noqhagamshelo lweselula lwe-5G ukufezekisa i-telemedicine, isithuthi esizimeleyo, inkomfa yevidiyo kunye nezinye izicelo ezinzulu ze-bandwidth. Ngokuvela kwenani elikhulu lamaziko eenkcukacha kunye nophuhliso olukhawulezayo lwengqondo yokwenziwa kunye nokufunda koomatshini, kunye nezantya zenethiwekhi ezikhawulezayo kunye nenkxaso ye-800G nangaphezulu, zonke iimpawu zefiber ziye zabaluleka.
Ngokomgangatho we-ITU-T G.650.3, i-optical time domain reflectometer (OTDR), i-optical loss testing device (OLTS), i-chromatic dispersion (CD), kunye ne-polarization mode dispersion (PMD) iimvavanyo ezifunekayo ukwenza ukuchongwa kwefiber ebanzi kunye nokuqinisekisa ukusebenza kwenethiwekhi ephezulu. Ke ngoko, ukulawula amaxabiso eCD kungundoqo ekuqinisekiseni ukuhanjiswa kwemfezeko nokusebenza kakuhle.
Nangona i-CD iyimpawu yendalo yazo zonke iifayili ze-optical fibers, okuyiyo yokwandiswa kwe-broadband pulses kwimigama emide, ngokwe-ITU-T G.650.3 standard, ukusabalalisa kuba yingxaki kwiifibers ze-optical kunye namazinga okudlulisa idatha ngaphezu kwe-10 Gbps. I-CD inokuchaphazela kakhulu umgangatho wesignali, ngakumbi kwiinkqubo zonxibelelwano olukhawulezayo, kwaye uvavanyo lungundoqo ekujonganeni nalo mngeni.
Yintoni iCD?
Xa i-pulse ekhanyayo ye-wavelengths ehlukeneyo isasazeka kwimicu ye-optical, ukusasazwa kokukhanya kunokubangela ukugqithiswa kwe-pulse kunye nokuphazamiseka, ekugqibeleni kukhokelela ekunciphiseni umgangatho wesignali edlulisiweyo. Kukho iindlela ezimbini zokusasazwa: ukusasazwa kwezinto kunye nokusasazwa kwamaza.
Ukusasazwa kwezinto eziphathekayo yinto engokwemvelo kuzo zonke iintlobo zemicu ye-optical, enokubangela ukuba ubude bamaza ahlukeneyo busasazeke ngesantya esahlukileyo, ekugqibeleni kubangele ubude bamaza bufikelele kwi-transceiver ekude ngamaxesha ahlukeneyo.
Ukusasazwa kwe-Waveguide kwenzeka kwisakhiwo se-waveguide se-fiber optical, apho imiqondiso ye-optical isasazeka ngombindi kunye nokugquma kweentsinga, ezineindices ezahlukeneyo ze-refractive. Oku kubangela utshintsho kububanzi bendawo yemowudi kunye nokwahluka kwisantya somqondiso kwizantya nganye zamaza.
Ukugcina iqondo elithile le-CD kubalulekile ukunqanda ukwenzeka kwezinye iziphumo ezingezizo, ngoko ke i-zero CD ayicebisi. Kodwa iCD kufuneka ilawulwe kwinqanaba elamkelekileyo ukunqanda iimpembelelo ezingalunganga kwimfezeko yomqondiso kunye nomgangatho wenkonzo.
Yintoni impembelelo yohlobo lwefayibha kwi-dispersion?
Njengoko bekutshiwo ngaphambili, i-CD luphawu lwendalo lwendalo yayo nayiphi na i-fiber optical, kodwa uhlobo lwefiber ludlala indima ebalulekileyo ekulawuleni iCD. Abaqhubi benethiwekhi banokukhetha "indalo" yokusabalalisa iifayili okanye iifayibha ezine-dispersion curves offset ukunciphisa impembelelo yeCD ngaphakathi koluhlu oluthile lwamaza.
Ifayibha esetyenziswa ngokuqhelekileyo kwiinethiwekhi zanamhlanje yi-fiber ye-ITU-T G.652 esemgangathweni kunye nokusabalalisa kwendalo. I-ITU-T G-653 i-zero dispersion shifted fiber ayixhasi ukuhanjiswa kwe-DWDM, ngelixa i-G.655 i-non-zero dispersion shifted fiber ine-CD ephantsi, kodwa iye yalungiselelwa imigama emide kwaye nayo ibiza kakhulu.
Ekugqibeleni, abaqhubi kufuneka baqonde iintlobo zefiber optics kuthungelwano lwabo. Ukuba ininzi ye-optical fibers i-G.652 eqhelekileyo, kodwa ezinye zizinye iintlobo zeefiber, ngoko ukuba ii-CD kuzo zonke izixhumanisi azikwazi ukubonwa, umgangatho wenkonzo uya kuchaphazeleka.
Ukuququmbela
Ukusasazwa kweChromatic kuhlala kungumngeni ekufuneka kujongwane nawo ukuze kuqinisekiswe ukuthembeka nokusebenza kakuhle kweenkqubo zonxibelelwano olukwisantya esiphezulu. Iimpawu zeFayibha kunye novavanyo zingundoqo ekusombululeni ukuntsonkotha kokusasazwa, ukubonelela ngengqiqo kwiingcali kunye neenjineli ukuyila, ukuhambisa, nokugcina iziseko ezingundoqo ezithwala unxibelelwano olubalulekileyo lwehlabathi. Ngophuhliso oluqhubekayo kunye nokwandiswa kwenethiwekhi, iSoftel iya kuqhubeka nokusungula kunye nokuqalisa izisombululo kwiimarike, ezikhokelela ekuxhaseni ukwamkelwa kobuchwepheshe obuphambili.
Ixesha lokuposa: Mar-20-2025