TheMach-Zehnder Modulator(MZ Modulator) na'ura ce mai mahimmanci don daidaita siginar gani bisa ka'idar tsangwama. Ka'idar aikinsa ita ce kamar haka: A reshe mai siffar Y a ƙarshen shigarwar, hasken shigarwa ya kasu kashi biyu na haske kuma ya shiga tashoshi na gani guda biyu don watsawa bi da bi. An yi tashar gani da kayan lantarki. Ta hanyar amfani da tasirinsa na photoelectric, lokacin da siginar lantarki da aka yi amfani da shi a waje ya canza, za a iya canza ma'anar refractive na kayansa, wanda ya haifar da bambance-bambancen hanyoyi na gani daban-daban tsakanin igiyoyin haske guda biyu suna kaiwa reshe mai siffar Y a ƙarshen fitarwa. Lokacin da siginar gani a cikin tashoshi na gani guda biyu suka isa reshe mai siffar Y a ƙarshen fitarwa, haɗuwa zai faru. Saboda jinkirin lokaci daban-daban na sigina na gani guda biyu, tsangwama na faruwa a tsakanin su, yana mai da bayanan banbancin lokaci da siginar gani biyu ke ɗauka zuwa bayanan ƙarfin siginar fitarwa. Don haka, ana iya samun nasarar aikin daidaita siginar lantarki akan masu ɗaukar hoto ta hanyar sarrafa sigogi daban-daban na ƙarfin lodin na'urar modulator na Maris-Zehnder.
Ainihin sigogi naMZ Modulator
Mahimman sigogi na MZ Modulator kai tsaye suna shafar aikin na'urar motsi a cikin yanayin aikace-aikace daban-daban. Daga cikin su, mahimman sigogi na gani da ma'aunin lantarki sune kamar haka.
Sigar gani:
(1) bandwidth na gani (3db bandwidth): Matsakaicin kewayon lokacin da ƙimar amsawar mitar ta ragu ta 3db daga matsakaicin ƙimar, tare da naúrar kasancewa Ghz. bandwidth na gani yana nuna kewayon mitar sigina lokacin da na'urar ke aiki akai-akai kuma siga ce don auna ƙarfin bayanan mai ɗaukar hoto a cikinelectrooptic modulator.
(2) Ragewar ɓarna: Matsakaicin matsakaicin ƙarfin ƙarfin gani ta hanyar injin lantarki zuwa mafi ƙarancin ƙarfin gani, tare da naúrar dB. Matsakaicin ɓarna shine ma'auni don ƙididdige ikon sauya wutar lantarki na na'ura mai daidaitawa.
(3) Komawa hasara: Ragowar ƙarfin haske mai haske a ƙarshen shigarwar namai daidaitawazuwa shigar da wutar lantarki, tare da naúrar dB. Asara mai da baya siga ce da ke nuna ƙarfin abin da ya faru da ke nuna baya ga tushen siginar.
(4) Hasara: Matsakaicin ikon gani na fitarwa zuwa ikon shigar da na'ura mai canzawa lokacin da ya kai matsakaicin ƙarfin fitarwa, tare da naúrar kasancewa dB. Asarar shigarwa alama ce da ke auna asarar wutar gani ta hanyar shigar da hanyar gani.
(5) Matsakaicin ikon shigar da gani: Yayin amfani na yau da kullun, MZM Modulator shigar da ƙarfin gani ya kamata ya zama ƙasa da wannan ƙimar don hana lalacewar na'urar, tare da naúrar kasancewa mW.
(6) Zurfin daidaitawa: Yana nufin rabon girman siginar daidaitawa zuwa girman mai ɗauka, yawanci ana bayyana shi azaman kashi.
Sigar lantarki:
Wutar lantarki ta rabin-wave: Yana nufin bambancin ƙarfin lantarki da ake buƙata don ƙarfin tuƙi don canza mai modulator daga yanayin kashewa zuwa yanayin kunnawa. Ƙarfin gani na MZM Modulator ya bambanta ci gaba tare da canjin ƙarfin lantarki. Lokacin da fitarwa na modulator ya haifar da bambance-bambancen digiri na 180, bambanci a cikin ƙarfin lantarki wanda ya dace da mafi ƙarancin madaidaicin madaidaicin madaidaicin shine ƙarfin rabin-wave, tare da naúrar V. An ƙaddara wannan siga ta hanyar abubuwa kamar kayan aiki, tsari da tsari, kuma shine madaidaicin ma'auni na asali.MZM Modulator.
(2) Matsakaicin ƙarfin wutar lantarki na DC: Yayin amfani na yau da kullun, ƙarfin shigar da son zuciya na MZM yakamata ya zama ƙasa da wannan ƙimar don hana lalacewar na'urar. Naúrar ita ce V. Ana amfani da wutar lantarki na nuna son kai na DC don sarrafa halin son zuciya na modulator don saduwa da buƙatun daidaitawa daban-daban.
(3) Matsakaicin ƙimar siginar RF: Yayin amfani na yau da kullun, shigar da siginar lantarki na RF na MZM yakamata ya zama ƙasa da wannan ƙimar don hana lalacewar na'urar. Naúrar ita ce V. Siginar mitar rediyo sigina ce ta lantarki wacce za a daidaita ta akan mai ɗaukar hoto.
Lokacin aikawa: Juni-16-2025