Siyazi ukuba ukususela ngo-1990, i-WDM wavelength division multiplexing iteknoloji isetyenziselwe i-fiber optic links ezide ezithatha amakhulu okanye amawaka eekhilomitha. Kumazwe amaninzi kunye nemimandla, iziseko ze-fiber optic yeyona asethi yabo ibiza kakhulu, ngelixa ixabiso lamacandelo e-transceiver liphantsi.
Nangona kunjalo, ngokukhula okuqhumayo kwamazinga okuhanjiswa kwedatha yenethiwekhi njenge-5G, iteknoloji ye-WDM ibaluleke kakhulu kwiikhonkco ezimfutshane, kwaye umthamo wokuthunyelwa kweekhonkco ezimfutshane zikhulu kakhulu, okwenza iindleko kunye nobukhulu bezinto ze-transceiver zibe buthathaka.
Okwangoku, ezi intanethi zisaxhomekeke kumawaka ee-fiber ze-optical mode ukuze zihanjiswe ngokufanayo ngokusebenzisa i-space division multiplexing channels, kwaye ireyithi yedatha yetshaneli nganye iphantsi kakhulu, kuninzi kuphela amakhulu ambalwa e-Gbit / s (800G). Inqanaba T linokuba nezicelo eziqingqiweyo.
Kodwa kwixesha elizayo elibonakalayo, ingqikelelo yolungelelwaniso oluqhelekileyo lwesithuba luza kufikelela ngokukhawuleza kumda walo wokulinganisa, kwaye kufuneka longezelelwe ngokuhambelana okubonakalayo kwemijelo yedatha kwifiber nganye ukugcina uphuculo olongezelelweyo kumazinga edatha. Oku kunokuvula isithuba esitsha sosetyenziso setekhnoloji yolwahlulo lwamaza obuninzi, apho ubuninzi benombolo yetshaneli kunye nesantya sedatha kubalulekile.
Kule meko, i-frequency comb generator (FCG), njengomthombo wokukhanya odibeneyo kunye nogxininiso lwamaza amaninzi, inokubonelela ngenani elikhulu labathwali be-optical abachazwe kakuhle, ngaloo ndlela idlala indima ebalulekileyo. Ukongeza, iadvanteji ebaluleke ngakumbi ye-optical frequency comb kukuba imigca ye-comb ilingana ngokuphindaphindiweyo ngamaxesha, enokuthi iphumle iimfuno zamabhendi okugada amatshaneli kwaye ithintele ulawulo lokuphindaphinda olufunekayo kwimigca enye kwizikimu zemveli zisebenzisa i-DFB laser arrays.
Kufuneka kuqatshelwe ukuba ezi zibonelelo azisebenzisi kuphela kwi-transmitter ye-wavelength division multiplexing, kodwa nakwi-receiver yayo, apho i-discrete local oscillator (LO) i-array inokutshintshwa yi-generator eyodwa ye-comb. Ukusetyenziswa kwe-LO comb generators kunokuqhubela phambili ukuququzelela ukusetyenzwa kwesignali yedijithali kwi-wavelength division multiplexing channels, ngaloo ndlela kuncitshiswe ukuntsokotha kommkeli kunye nokuphucula ukunyamezela ingxolo.
Ukongeza, ukusebenzisa imiqondiso ye-LO comb enomsebenzi ovaliweyo wesigaba sokwamkelwa okuhambelanayo kunokwakha kwakhona i-time-domain waveform yayo yonke i-wavelength division multiplexing signal, ngaloo ndlela ihlawulela umonakalo owenziwe yi-optical nonlinearity ye-fiber transmission. Ukongeza kwiinzuzo zengqiqo ezisekelwe kwi-comb signal transmission, ubungakanani obuncinci kunye noqoqosho olusebenzayo lwemveliso yezinga elikhulu nazo ziyimiba ephambili ye-wavelength division multiplexing transceivers.
Ke ngoko, phakathi kweengqikelelo ezahlukeneyo zejeneretha ye-comb, izixhobo zomgangatho we-chip ziphawuleka ngakumbi. Xa zidityaniswe neesekethe ezidityanisiweyo zefotonic ezidityanisiweyo zohlengahlengiso lwedatha, i-multiplexing, i-routing, kunye nolwamkelo, ezo zixhobo zinokuba ngundoqo kwi-compact kunye nesebenzayo ye-wavelength division multiplexing transceivers ezinokuveliswa ngobuninzi ngexabiso eliphantsi, kunye nokuhanjiswa kwamandla amashumi Tbit/s ngefiber nganye.
Kwisiphumo sokuphela kokuthumela, ishaneli nganye iphinda ihlanganiswe nge-multiplexer (MUX), kwaye i-wavelength division multiplexing signal ihanjiswa nge-fiber-mode single. Ekupheleni kokufumana, i-wavelength division multiplexing receiver (WDM Rx) isebenzisa i-LO i-oscillator yendawo ye-FCG yesibini yokukhangela ukuphazamiseka kwamaza amaninzi. Ijelo legalelo lolwahlulo lwamaza ophinda-phindwayo lwezahlulo zesiginali yahlulwe yi-demultiplexer emva koko ithunyelwe kuluhlu olubambeneyo lomamkeli (Coh. Rx). Phakathi kwabo, i-frequency demultiplexing ye-oscillator ye-LO yendawo isetyenziswe njengesalathiso sesigaba sommkeli ngamnye ohambelanayo. Ukusebenza kolu lwahlulo lwamaza ophinda-phindwayo lwekhonkco ngokucacileyo luxhomekeke kakhulu kwisiseko sejenereyitha yomqondiso wekama, ngakumbi ububanzi bokukhanya kunye namandla okukhanya omgca ngamnye wekama.
Ewe kunjalo, itekhnoloji ye-optical frequency comb isekwinqanaba lophuhliso, kwaye iimeko zokusetyenziswa kwayo kunye nobungakanani bentengiso zincinci. Ukuba inokoyisa imiqobo yetekhnoloji, inciphise iindleko, kwaye iphucule ukuthembeka, inokufikelela kwimigangatho yosetyenziso lwenqanaba losulelo lwe-optical.
Ixesha lokuposa: Dec-19-2024