Ukuthi ukuxhumanisa imiphakathi noma amazwekazi adlulayo, isivinini nokunemba kuyizimfuneko ezimbili ezibalulekile zamanethiwekhi e-fiber optic aphatha ukuxhumana kwemisebenzi ebalulekile. Abasebenzisi badinga izixhumanisi ezisheshayo ze-FTTH kanye noxhumo lweselula lwe-5G ukuze bathole i-telemedicine, imoto ezimele, inkomfa ngevidiyo nezinye izinhlelo zokusebenza ezijulile zomkhawulokudonsa. Ngokuvela kwenani elikhulu lezikhungo zedatha kanye nokuthuthukiswa okusheshayo kobuhlakani bokwenziwa nokufunda komshini, okuhambisana nesivinini senethiwekhi esisheshayo nokusekelwa kwe-800G nangaphezulu, zonke izici zefiber sezibalulekile.
Ngokwezinga le-ITU-T G.650.3, ukuhlolwa kwesizinda se-optical time domain reflectometer (OTDR), idivayisi yokuhlola ukulahleka kwe-optical (OLTS), i-chromatic dispersion (CD), kanye nokuhlolwa kwe-polarization mode dispersion (PMD) kuyadingeka ukuze kwenziwe ukuhlonza i-fiber okuphelele nokuqinisekisa ukusebenza okuphezulu kwenethiwekhi. Ngakho-ke, ukuphatha amanani e-CD kuyisihluthulelo sokuqinisekisa ubuqotho bokudlulisela kanye nokusebenza kahle.
Nakuba i-CD iyisici esingokwemvelo sawo wonke ama-optical fibers, okuwukunwetshwa kwe-broadband pulses ebangeni elide, ngokusho kwezinga le-ITU-T G.650.3, ukuhlakazeka kuba yinkinga kuma-optical fibers namazinga okudlulisa idatha angaphezu kwe-10 Gbps. I-CD ingathinta kakhulu ikhwalithi yesignali, ikakhulukazi ezinhlelweni zokuxhumana ezinesivinini esikhulu, futhi ukuhlola kuwukhiye wokubhekana nale nselele.
Yini i-CD?
Uma ama-pulse okukhanya amaza ahlukene asakazeka kumafiber optical, ukuhlakazwa kokukhanya kungabangela ukunqwabelana kwe-pulse kanye nokuhlanekezela, ekugcineni kuholele ekwehleni kwekhwalithi yesiginali edlulisiwe. Kunezindlela ezimbili zokuhlakazeka: ukuhlakazwa kwezinto ezibonakalayo kanye nokuhlakazeka kwe-waveguide.
I-Material dispersion iyisici esingokwemvelo kuzo zonke izinhlobo zemicu ye-optical, engabangela ubude begagasi obuhlukene ukuthi busakazeke ngesivinini esihlukene, ekugcineni kubangele ubude begagasi obufinyelela ku-transceiver ekude ngezikhathi ezahlukene.
Ukuhlakazeka kwe-Waveguide kwenzeka esakhiweni se-waveguide samafiber okubona, lapho amasiginali okubona asakazeka phakathi nendawo kanye nokuvala amafayibha, anezinkomba ezihlukile ze-refractive. Lokhu kubangela ushintsho kububanzi benkambu yemodi kanye nokuhluka kwejubane lesignali kubude beza obubodwa.
Ukugcina izinga elithile le-CD kubalulekile ukuze ugweme ukwenzeka kweminye imiphumela engaqondile, ngakho-ke i-zero CD ayifaneleki. Kodwa i-CD kufanele ilawulwe ngezinga elamukelekayo ukuze kugwenywe imithelela engemihle kubuqotho besignali kanye nekhwalithi yesevisi.
Uyini umthelela wohlobo lwefiber ekuhlakazweni?
Njengoba kushiwo ngaphambili, i-CD iyisici semvelo esingokwemvelo sanoma iyiphi i-optical fiber, kodwa uhlobo lwefayibha ludlala indima ebalulekile ekulawuleni i-CD. Ama-opharetha enethiwekhi angakhetha amafayibha okuhlakazeka “emvelo” noma amafayibha ane-dispersion curves offset ukuze kuncishiswe umthelela we-CD phakathi kwebanga elithile lobude begagasi.
Ifayibha esetshenziswa kakhulu kumanethiwekhi anamuhla ifayibha ejwayelekile ye-ITU-T G.652 enokusabalalisa kwemvelo. I-ITU-T G-653 zero dispersion shifted fiber ayikusekeli ukudluliswa kwe-DWDM, kuyilapho i-G.655 non-zero dispersion shifted fiber ine-CD ephansi, kodwa ilungiselelwe amabanga amade futhi ibiza kakhulu.
Ekugcineni, opharetha kufanele baqonde izinhlobo zefiber optics kumanethiwekhi abo. Uma iningi lemicu ye-optical liyi-G.652 evamile, kodwa ezinye ziyizinye izinhlobo zemicu, khona-ke uma ama-CD kuzo zonke izixhumanisi engakwazi ukubonakala, ikhwalithi yesevisi izothinteka.
Ekuphetheni
Ukuhlakazwa kweChromatic kuseyinselelo okufanele kubhekwane nayo ukuze kuqinisekiswe ukwethembeka nokusebenza kahle kwezinhlelo zokuxhumana ezinesivinini esikhulu. Izici ze-fiber nokuhlola zibalulekile ekuxazululeni inkimbinkimbi yokuhlakazwa, ukunikeza ochwepheshe nonjiniyela ukuqonda ukuze baklame, basebenzise, futhi bagcine ingqalasizinda ephethe ukuxhumana kwemishini ebalulekile yomhlaba wonke. Ngokuthuthuka okuqhubekayo nokwandiswa kwenethiwekhi, iSoftel izoqhubeka nokusungula futhi yethule izixazululo emakethe, okuhola indlela ekusekeleni ukwamukelwa kobuchwepheshe obuphambili.
Isikhathi sokuthumela: Mar-20-2025