Babban mai amfani da na'urar lantarki mai aiki: mai sarrafa lithium niobate mai sirara

Babban aikin na'urar sarrafa hasken lantarki ta lantarki:siraran fim na lithium niobate modulator

Mai daidaita hasken lantarki (electro-optical modulator)Mai daidaita EOM) wani abu ne mai daidaita sauti wanda aka yi ta amfani da tasirin electro-optical na wasu lu'ulu'u na electro-optical, waɗanda za su iya canza siginar lantarki mai sauri a cikin na'urorin sadarwa zuwa siginar gani. Lokacin da aka sanya lu'ulu'u na electro-optical a cikin filin lantarki da aka yi amfani da shi, ma'aunin haske na lu'ulu'u na electro-optical zai canza, kuma halayen raƙuman haske na lu'ulu'u zai canza daidai da haka, don a fahimci yanayin girma, lokaci da yanayin polarization na siginar gani, da kuma canza siginar lantarki mai sauri a cikin na'urar sadarwa zuwa siginar gani ta hanyar daidaitawa.

A halin yanzu, akwai manyan nau'ikan iri guda ukumasu daidaita wutar lantarkia kasuwa: masu gyaran silicon, masu gyaran indium phosphide da kuma fim mai siririna'urar daidaita lithium niobateDaga cikinsu, silicon ba shi da ma'aunin lantarki kai tsaye, aikin ya fi na gama gari, ya dace kawai don samar da na'urar watsa bayanai ta hanyar ... Sabanin haka, lu'ulu'u na lithium niobate ba wai kawai yana da wadataccen tasirin photoelectric ba, tasirin photorefractive, tasirin nonlinear, tasirin electro-optical, tasirin acoustic optic, tasirin piezoelectric da tasirin thermoelectric daidai suke da ɗaya, kuma godiya ga tsarin lattice ɗinsa da tsarin lahani mai yawa, yawancin kaddarorin lithium niobate ana iya sarrafa su sosai ta hanyar abun da ke cikin lu'ulu'u, doping elements, sarrafa yanayin valence, da sauransu. Samun ingantaccen aikin photoelectric, kamar ƙimar electro-optical har zuwa 30.9pm/V, mafi girma fiye da indium phosphide, kuma yana da ƙaramin tasirin chirp (tasirin chirp: yana nufin abin da ke faruwa cewa mitar da ke cikin bugun jini yana canzawa tare da lokaci yayin aikin watsa bugun laser. Babban tasirin chirp yana haifar da ƙarancin rabon sigina zuwa hayaniya da tasirin mara layi), kyakkyawan rabo na ɓacewa (matsakaicin rabon wutar lantarki na yanayin "kunna" na siginar zuwa yanayin "kashe"), da kwanciyar hankali na na'ura mafi kyau. Bugu da ƙari, tsarin aiki na siraran fim ɗin lithium niobate modulator ya bambanta da na silicon-based modulator da indium phosphide modulator ta amfani da hanyoyin daidaitawa marasa layi, wanda ke amfani da tasirin electro-optical na layi don ɗora siginar da aka daidaita ta lantarki a kan mai ɗaukar haske, kuma ƙimar daidaitawa galibi ana ƙayyade ta ne ta hanyar aikin microwave electrode, don haka ana iya cimma mafi girman saurin daidaitawa da layi da kuma ƙarancin amfani da wutar lantarki. Dangane da abin da ke sama, lithium niobate ya zama zaɓi mafi kyau don shirya masu gyaran lantarki masu aiki mai ƙarfi, waɗanda ke da aikace-aikace iri-iri a cikin hanyoyin sadarwa na gani mai haɗin gwiwa na 100G/400G da cibiyoyin bayanai masu sauri, kuma suna iya cimma nisan watsawa mai tsawo na sama da kilomita 100.

Lithium niobate a matsayin abu mai juyi na "juyin juya halin photon", kodayake idan aka kwatanta da silicon da indium phosphide yana da fa'idodi da yawa, amma sau da yawa yana bayyana a cikin nau'in kayan abu mai yawa a cikin na'urar, hasken yana iyakance ga jagorar raƙuman jirgin sama wanda aka samar ta hanyar yaduwar ion ko musayar proton, bambancin ma'aunin refractive yawanci ƙanƙanta ne (kimanin 0.02), girman na'urar yana da girma sosai. Yana da wuya a biya buƙatun ragewa da haɗakarwana'urorin gani, kuma layin samarwa har yanzu ya bambanta da ainihin layin tsarin microelectronics, kuma akwai matsalar tsada mai yawa, don haka samar da fim mai siriri muhimmin alkibla ne na ci gaba ga lithium niobate da ake amfani da shi a cikin masu daidaita wutar lantarki.