Njengoba sazi, kusukela ngeminyaka yawo-1990s, ubuchwepheshe be-WDM WDM buye basetshenziselwa izixhumanisi ze-fibre-optic ezidonsa isikhathi eside zamakhulu noma izinkulungwane zamakhilomitha. Ezifundeni eziningi zezwe, ingqalasizinda yefayibha iyimpahla yayo ebiza kakhulu, kuyilapho izindleko zezingxenye ze-transceiver ziphansi.
Kodwa-ke, ngokuqhuma kwamazinga edatha kumanethiwekhi afana ne-5G, ubuchwepheshe be-WDM buya ngokuya bubaluleke kakhulu kuzixhumanisi ezifinyeziwe futhi, ezisetshenziswa ngamavolumu amakhulu kakhulu ngakho-ke zizwela kakhulu izindleko kanye nobukhulu bemihlangano ye-transceiver.
Njengamanje, lawa manethiwekhi asathembele ezinkulungwaneni zemicu yokubona yemodi eyodwa edluliselwa ngokuhambisana ngamashaneli okuphindaphindeka kokuhlukaniswa komkhathi, ngamanani aphansi kakhulu edatha okungenani angamakhulu ambalwa ama-Gbit/s (800G) isiteshi ngasinye, ngenani elincane elingenzeka. izicelo ku-T-class.
Kodwa-ke, esikhathini esizayo esibonakalayo, umqondo wokufana kwendawo ovamile uzofinyelela ngokushesha emikhawulweni yokukala kwawo, futhi kuzodingeka uhambisane nokuhambisana okubonakalayo kokusakazwa kwedatha ku-fiber ngayinye ukuze kuqhutshekwe nokwenyuka okwengeziwe kwamazinga edatha. Lokhu kungase kuvule isikhala esisha sokufaka isicelo sobuchwepheshe be-WDM, lapho ukulinganisa okuphezulu ngokwenani lamashaneli nezinga ledatha kubalulekile.
Kulo mongo,i-optical frequency comb generator (FCG)idlala indima ebalulekile njengomthombo wokukhanya ohlangene, ongaguquki, wamaza amaningi onganikeza inani elikhulu labathwali be-optical abachazwe kahle. Ukwengeza, inzuzo ebaluleke kakhulu yama-optical frequency combs ukuthi imigqa yekama ilingana ngokwemvelo ngamafrikhwensi, ngaleyo ndlela ixegisa imfuneko yamabhendi onogada aphakathi kweziteshi futhi igwema ukulawulwa kwamafrikhwensi okungadingeka kumugqa owodwa ohlelweni oluvamile kusetshenziswa. uhlu lwama-lasers e-DFB.
Kubalulekile ukuqaphela ukuthi lezi zinzuzo azisebenzi kubathumeli be-WDM kuphela kodwa nakwabamukelayo, lapho ama-array e-discrete local oscillator (LO) angathathelwa indawo yi-generator eyodwa yamakamu. Ukusetshenziswa kwamajeneretha e-LO comb kuqhubezela phambili kusiza ukucutshungulwa kwesignali yedijithali eziteshini ze-WDM, ngaleyo ndlela kunciphisa inkimbinkimbi yomamukeli nokwandisa ukubekezelela umsindo kwesigaba.
Ukwengeza, ukusetshenziswa kwamasiginali we-LO comb ngokuvala kwesigaba sokwamukela okuhambisanayo okuhambisanayo kuze kwenza kube nokwenzeka ukwakha kabusha i-waveform yesizinda sesikhathi sayo yonke isiginali ye-WDM, ngaleyo ndlela kunxeshezelwe ukonakala okubangelwa ukungaboni ngaso linye kwe-optical nonlinearities ku-transmission fiber. Ngaphezu kwalezi zinzuzo zomqondo zokudluliswa kwesignali okusekelwe kumakamu, usayizi omncane kanye nokukhiqizwa kwenqwaba okungabizi kakhulu nakho kuwukhiye kuma-transceivers e-WDM azayo.
Ngakho-ke, phakathi kwemiqondo eyahlukene yokukhiqiza isignali yekama, amadivaysi e-chip-scale athakaselwa ngokukhethekile. Uma kuhlanganiswe neziyingi ezihlanganisiwe ze-photonic ezibukhali kakhulu zokushintsha isignali yedatha, ukuphindaphinda, umzila nokwamukela, imishini enjalo ingase ibe nokhiye wama-transceiver e-WDM ahlangene, asebenza kahle kakhulu angenziwa ngobuningi ngezindleko eziphansi, namandla okudlulisela afika emashumini. ye-Tbit/s nge-fiber ngayinye.
Isibalo esilandelayo sibonisa uhlelo lwesidlulisi se-WDM sisebenzisa i-optical frequency comb FCG njengomthombo wokukhanya wamaza amaningi.Isiginali yenhlanganisela ye-FCG iqala ngokuhlukaniswa nge-demultiplexer (DEMUX) bese ingena kumoduli ye-EOM electro-optical. Ngokusebenzisa, isiginali ingaphansi kwe-QAM quadrature amplitude modulation ethuthukisiwe ukuze kusebenze kahle kokubonwayo (SE).
Lapho i-transmitter egress, iziteshi zihlanganiswa kabusha ku-multiplexer (MUX) futhi amasignali e-WDM adluliselwa nge-fiber yemodi eyodwa. Ekupheleni kokwamukela, isamukeli se-wavelength division multiplexing (WDM Rx), sisebenzisa i-oscillator yendawo ye-LO ye-2nd FCG ukuze kutholwe okuhambisanayo kwe-multiwavelength. Amashaneli amasiginali we-WDM okokufaka ahlukaniswa nge-demultiplexer futhi anikezwa kuhlelo oluhlangene olwamukelayo (Coh. Rx). lapho i-demultiplexing frequency ye-oscillator yendawo LO isetshenziswa njengereferensi yesigaba somamukeli ngamunye ohlangene. Ukusebenza kwalezi zixhumanisi ze-WDM ngokusobala kuncike kakhulu kujeneretha yesignali yekama engaphansi, ikakhulukazi ububanzi bomugqa obonakalayo namandla okubona ngomugqa wekama ngamunye.
Kunjalo, ubuchwepheshe be-optical Commb technology busesesigabeni sokuthuthuka, futhi izimo zokusetshenziswa kwabo kanye nosayizi wemakethe kuncane uma kuqhathaniswa. Uma inganqoba izingqinamba zobuchwepheshe, yehlise izindleko futhi ithuthukise ukwethembeka, khona-ke kuzokwazi ukufeza izinhlelo zokusebenza zesikali ekudluliselweni kwe-optical.
Isikhathi sokuthumela: Nov-21-2024