II-Mach-Zehnder Modulator(I-MZ Modulator) iyithuluzi elibalulekile lokushintsha amasignali optical ngokusekelwe kumgomo wokuphazanyiswa. Umgomo wayo wokusebenza umi kanje: Egatsheni elimise okwe-Y ekugcineni kokufaka, ukukhanya okokufaka kuhlukaniswe ngamagagasi amabili okukhanya futhi kungena iziteshi ezimbili ezihambisanayo ze-optical zokudlulisa ngokulandelana. Ishaneli ye-optical yenziwe ngezinto ze-electro-optic. Ngokusebenzisa umphumela wayo we-photoelectric, lapho isignali kagesi esetshenziswa ngaphandle ishintsha, inkomba ye-refractive yezinto zayo siqu ingashintshwa, okuholela ekuhlukeni kwendlela ye-optical ehlukile phakathi kwemishayo emibili yokukhanya efinyelela egatsheni elimise okwe-Y ekugcineni kokuphuma. Lapho amasignali okubona eziteshini ezimbili ze-optical efinyelela egatsheni elimise okwe-Y ekugcineni kokuphumayo, ukuhlangana kuzokwenzeka. Ngenxa yokubambezeleka kwesigaba esihlukile samasignali amabili okubona, ukuphazamiseka kwenzeka phakathi kwawo, okuguqula ulwazi lomehluko wesigaba oluthwalwa amasiginali amabili okubona kulwazi lokuqina lwesiginali yokuphumayo. Ngakho-ke, umsebenzi wokushintsha amasiginali kagesi ezithwali ezibonayo ungafinyelelwa ngokulawula imingcele ehlukahlukene ye-voltage yokulayisha ye-modulator ye-March-Zehnder.
Imingcele eyisisekelo yeI-MZ Modulator
Imingcele eyisisekelo ye-MZ Modulator ithinta ngqo ukusebenza kwesimodeli ezimeni ezihlukahlukene zohlelo lokusebenza. Phakathi kwazo, imingcele ebalulekile ye-optical kanye nemingcele kagesi ilandelayo.
Imingcele ye-Optical:
(1) Umkhawulokudonsa wokubuka (umkhawulokudonsa we-3db) : Ibanga lefrikhwensi lapho i-amplitude yokusabela yefrikhwensi yehla ngo-3db ukusuka kunani eliphakeme, neyunithi iyi-Ghz. I-Optical bandwidth ikhombisa ububanzi befrikhwensi yesiginali lapho imoduli isebenza ngokujwayelekile futhi iyipharamitha yokulinganisa umthamo wolwazi wesiginali yenethiwekhii-electro-optic module.
(2) Isilinganiso sokuqedwa: Isilinganiso somkhawulo omkhulu ophumayo wamandla okubona ngemoduli ye-electro-optic ukuya emandleni abonakalayo amancane, neyunithi ye-dB. Isilinganiso sokushabalala siyipharamitha yokuhlola amandla okushintsha i-electro-optic yemoduli.
(3) Ukulahlekelwa kokubuyisela: Isilinganiso samandla okukhanya abonisiwe ekugcineni kokufaka kwe-imoduliemandleni okukhanya okokufaka, ngeyunithi ye-dB. Ukulahlekelwa kokubuyisela kuyipharamitha ebonisa amandla esigameko aboniswa emuva kumthombo wesignali.
(4) Ukulahlekelwa kokufakwayo: Isilinganiso samandla okukhanya okukhiphayo kumandla okubona okokufaka wemoduli uma ifinyelela amandla ayo okukhipha aphezulu, iyunithi ibe yi-dB. Ukulahlekelwa kokufakwayo kuyinkomba ekala ukulahleka kwamandla okubonakalayo okubangelwa ukufakwa kwendlela yokubona.
(5) Ubukhulu bamandla okubona okokufaka: Phakathi nokusetshenziswa okuvamile, amandla okubona okokufaka we-MZM Modulator kufanele abe ngaphansi kwaleli nani ukuze kuvinjwe umonakalo wedivayisi, iyunithi ibe yi-mW.
(6) Ukujula kokuguquguquka: Kubhekisela esilinganisweni se-amplitude yesignali yokushintshashintsha ku-amplitude yenkampani yenethiwekhi, ngokuvamile evezwa njengephesenti.
Amapharamitha kagesi:
I-half-wave voltage: Isho umehluko we-voltage odingekayo ukuze i-voltage yokushayela ishintshe imodulator isuke esimweni esivaliwe iye kwesesimeni. Amandla okukhipha optical we-MZM Modulator ayahluka ngokuqhubekayo ngokushintsha kwe-voltage echema. Lapho okukhipha i-modulator kukhiqiza umehluko wesigaba esingu-180-degree, umehluko ku-voltage echema ehambisana nephoyinti eliphansi eliseduze futhi iphuzu eliphakeme liyi-voltage engamagagasi anguhhafu, eneyunithi engu-V. Le parameter inqunywa izici ezifana nempahla, isakhiwo kanye nenqubo, futhi iyipharamitha engokwemvelo yeI-MZM Modulator.
(2) I-voltage enkulu yokuchema ye-DC: Ngesikhathi sokusetshenziswa okuvamile, i-voltage yokuchema yokufaka ye-MZM kufanele ibe ngaphansi kwaleli nani ukuze kuvinjelwe ukulimala kwedivayisi. Iyunithi ingu-V. I-voltage echema ye-DC isetshenziselwa ukulawula isimo sokuchema semoduli ukuze kuhlangatshezwane nezidingo ezihlukile zokumodareyitha.
(3) Inani eliphakeme kakhulu lesignali ye-RF: Ngesikhathi sokusetshenziswa okuvamile, isignali kagesi ye-RF efakwayo ye-MZM kufanele ibe ngaphansi kwaleli nani ukuze kuvinjelwe ukulimala kwedivayisi. Iyunithi ingu-V. Isignali yefrikhwensi yomsakazo isignali kagesi ezoshintshwa ingene kusithwali esibonayo.
Isikhathi sokuthumela: Jun-16-2025