Njengoko sisazi, ukusukela ngeminyaka yee-1990, itekhnoloji ye-WDM ye-WDM isetyenziselwe amakhonkco omde we-fiber-optic angamakhulu okanye amawaka eekhilomitha. Kwimimandla emininzi yelizwe, isiseko sefayibha yeyona asethi yaso ebiza kakhulu, ngelixa ixabiso lamacandelo e-transceiver liphantsi.
Nangona kunjalo, kunye nokuqhuma kweereyithi zedatha kwiinethiwekhi ezifana ne-5G, iteknoloji ye-WDM iya ibaluleke kakhulu kwiikhonkco ezimfutshane kunye, ezifakwe kwimiqulu emikhulu kakhulu kwaye ngoko ke zivakalelwa ngakumbi kwiindleko kunye nobukhulu beendibano ze-transceiver.
Okwangoku, ezi intanethi zisaxhomekeke kumawaka eentsinga zemowudi enye ezithunyelwa ngokunxuseneyo ngokusebenzisa amajelo okwahlulahlula isithuba sokuphindaphinda, kunye namazinga edatha asezantsi kakhulu kumakhulu ambalwa eGbit/s (800G) ngetshaneli nganye, enenani elincinci elinokwenzeka. izicelo kwi-T-class.
Nangona kunjalo, kwixesha elizayo elibonakalayo, ingqikelelo yolungelelwaniso oluqhelekileyo lwesithuba kungekudala iza kufikelela kwimida yokukaleka kwayo, kwaye kuya kufuneka incediswe ngokunxulunyaniswa okubonakalayo kwemijelo yedatha kwifiber nganye ukuze kugcinwe ukunyuka okuthe kratya kumazinga edatha. Oku kunokuvula indawo entsha yesicelo setekhnoloji ye-WDM, apho ubuninzi bokulinganisa ngokwenani lamatshaneli kunye nezinga ledatha libalulekile.
Kulo mxholo,i-optical frequency comb generator (FCG)idlala indima ephambili njengomthombo wokukhanya odibeneyo, osisigxina, owenziwe ngamaza amaninzi onokunika inani elikhulu labathwali be-optical echazwe kakuhle. Ukongeza, iadvanteji ebaluleke ngakumbi ye-optical frequency Combs kukuba imigca yekama ilingana ngokwangaphakathi kumaza, ngaloo ndlela ikhulula imfuneko yeebhendi zokugada phakathi kwetshaneli kunye nokuthintela ulawulo lwamaza okuza kufuneka kumgca omnye kwisikimu esiqhelekileyo sisebenzisa. uluhlu lweelaser zeDFB.
Kubalulekile ukuqaphela ukuba ezi zibonelelo azisebenzisi kuphela kwi-WDM transmitters kodwa nakubamkeli babo, apho i-discrete local oscillator (LO) i-arrays ingatshintshwa yi-generator eyodwa ye-comb. Ukusetyenziswa kweejenereyitha ze-LO comb kuququzelela ngakumbi ukusetyenzwa komqondiso wedijithali kumajelo e-WDM, ngaloo ndlela kuncitshiswa ukuntsokotha kommkeli kunye nokwandisa ukunyamezela ingxolo.
Ukongezelela, ukusetyenziswa kweempawu ze-LO comb kunye nesigaba sokuvala ukwamkelwa okuhambelanayo okuhambelanayo nokuba kwenza kube lula ukwakhiwa kwakhona kwe-time-domain waveform ye-WDM yesiginali yonke, ngaloo ndlela kuhlawulela ukukhubazeka okubangelwa yi-optical nonlinearities kwi-fibre yokudlulisa. Ukongeza kwezi nzuzo zengqiqo yokuhanjiswa kwe-comb-based signal, ubungakanani obuncinci kunye nokuveliswa kwexabiso eliphantsi kweendleko nazo zingundoqo kwii-transceivers ze-WDM zexesha elizayo.
Ke ngoko, phakathi kweengqikelelo ezahlukeneyo zejeneretha ye-comb, izixhobo zesikali se-chip zinomdla okhethekileyo. Xa zidityanisiwe kunye neesekethe ezidibeneyo ze-photonic ezidibeneyo zokuguqulwa kwedatha yedatha, i-multiplexing, i-routing kunye nokwamkelwa, ezo zixhobo zinokuthi zibambe isitshixo kwi-compact, i-transceivers ye-WDM esebenzayo kakhulu enokuthi yenziwe ngobuninzi bexabiso eliphantsi, kunye namandla okuhambisa ukuya kwishumi. ye Tbit/s ngefayibha nganye.
Lo mfanekiso ulandelayo ubonisa iskimu somthumeli we-WDM usebenzisa i-optical frequency comb FCG njengomthombo wokukhanya onamaza amaninzi. Ngokusebenzisa, umqondiso uphantsi kwe-QAM ye-quadrature amplitude modulation ye-quadrature ye-optimal spectral performance (SE).
Kwi-transmitter egress, iziteshi ziphinda zihlanganiswe kwi-multiplexer (MUX) kwaye izibonakaliso ze-WDM zithunyelwa kwi-fiber mode eyodwa. Ekupheleni kokufumana, i-wavelength division multiplexing receiver (WDM Rx), isebenzisa i-LO i-oscillator yendawo ye-2nd FCG yokufumanisa i-multiwavelength ehambelanayo. Imijelo yeempawu ze-WDM zegalelo zihlukaniswe yi-demultiplexer kwaye zondliwe kwi-receiver receiver ehambelanayo (Coh. Rx). apho i-demultiplexing frequency ye-oscillator ye-LO yendawo isetyenziswe njengesalathiso sesigaba sommkeli ngamnye ohambelanayo. Ukusebenza kwezi khonkco ze-WDM ngokucacileyo kuxhomekeke kumlinganiselo omkhulu kwi-generator yesignali ye-comb engaphantsi, ngokukodwa ububanzi bomgca we-optical kunye namandla optical ngomgca we-comb.
Ewe kunjalo, itekhnoloji ye-optical frequency comb isekwinqanaba lophuhliso, kwaye iimeko zokusetyenziswa kwayo kunye nobungakanani bentengiso zincinci. Ukuba inokunqoba iibhotile zobugcisa, ukunciphisa iindleko kunye nokuphucula ukuthembeka, ngoko kuya kwenzeka ukuba kufezekiswe izicelo zezinga eliphezulu kwi-optical transmission.
Ixesha lokuposa: Nov-21-2024