Tsoelo-pele ea lipatlisiso tsamodulator ea electro-optic ea filimi e tšesaane ea lithium niobate
Modulator ea electro-optic ke sesebelisoa sa mantlha sa sistimi ea puisano ea optical le sistimi ea photonic ea microwave. E laola khanya e jalang sebakeng se lokolohileng kapa tataiso ea maqhubu a optical ka ho fetola index ea refractive ea thepa e bakoang ke tšimo ea motlakase e sebelisitsoeng. Lithium niobate ea setsomodulator ea electro-opticale sebelisa thepa ea lithium niobate e ngata e le thepa ea electro-optical. Thepa ea lithium niobate e le 'ngoe ea kristale e kopantsoe sebakeng seo ho etsa waveguide ka ho hasanya titanium kapa mokhoa oa phapanyetsano ea proton. Phapang ea index ea refractive pakeng tsa lera la mantlha le lera la cladding e nyane haholo, 'me waveguide e na le bokhoni bo fokolang ba ho tlama lebaleng la leseli. Bolelele bohle ba modulator ea electro-optic e pakiloeng hangata ke 5 ~ 10 cm.
Theknoloji ea Lithium Niobate ho Insulator (LNOI) e fana ka mokhoa o atlehang oa ho rarolla bothata ba boholo bo boholo ba modulator ea electro-optic ea lithium niobate. Phapang ea index ea refractive pakeng tsa lera la mantlha la waveguide le lera la cladding e fihla ho 0.7, e leng se ntlafatsang haholo bokhoni ba ho tlama mokhoa oa optical le phello ea taolo ea electro-optical ea waveguide, 'me e fetohile sebaka se seholo sa lipatlisiso lefapheng la modulator ea electro-optical.
Ka lebaka la tsoelo-pele ea theknoloji ea machining a manyane, nts'etsopele ea li-modulator tsa electro-optic tse thehiloeng sethaleng sa LNOI e hatetse pele ka potlako, e bonts'a mokhoa oa boholo bo kopaneng le ntlafatso e tsoelang pele ea ts'ebetso. Ho ea ka sebopeho sa waveguide se sebelisitsoeng, li-modulator tse tloaelehileng tsa electro-optic tsa lithium niobate ke li-modulator tsa electro-optic tse betliloeng ka kotloloho tsa waveguide, tse nang le hybrid e kentsoeng.li-modulator tsa tataiso ea maqhubule di-electro-optic modulator tse kopantsweng tsa silicon tse kopantsweng.
Hona jwale, ntlafatso ya tshebetso ya ho tjhesa e ommeng e fokotsa haholo tahlehelo ya leqhubu la maqhubu a tshesane a lithium niobate, mokgwa wa ho kenya ridge o rarolla bothata ba bothata bo boholo ba tshebetso ya ho tjhesa, mme o hlokometse modulator ya electro-optic ya lithium niobate e nang le motlakase o ka tlase ho 1 V half wave, mme kopanyo le theknoloji e hodileng ya SOI e dumellana le mokgwa wa ho kopanya photon le electron hybrid. Theknoloji ya lithium niobate ya filimi e tshesane e na le melemo ya ho fihlella tahlehelo e tlase, boholo bo bonyenyane le bandwidth e kgolo e kopantsweng ya electro-optic ho chip. Ka kgopolo, ho bolelwa esale pele hore modulator ya electro-optic ya filimi e tshesane ya 3mm lithium niobate e sutumelletsa-e hula.Modulator ea M⁃ZBophara ba motlakase ba 3dB electro-optical bo ka fihla ho 400 GHz, 'me bophara ba motlakase ba modulator ea filimi e tšesaane ea lithium niobate e lokisitsoeng ka liteko bo tlalehiloe bo le hole hanyane le 100 GHz, e leng se ntseng se le hole le moeli o ka holimo oa khopolo-taba. Ntlafatso e tlisoang ke ho ntlafatsa liparamente tsa motheo tsa sebopeho e lekanyelitsoe. Nakong e tlang, ho latela pono ea ho hlahloba mekhoa le meaho e mecha, joalo ka ho rala electrode e tloaelehileng ea coplanar waveguide e le electrode ea microwave e arotsoeng ka likarolo, ts'ebetso ea modulator e ka ntlafatsoa le ho feta.
Ho phaella moo, ho phethahala ha sephutheloana sa di-chip tsa modulator se kopaneng le kopanyo e fapaneng ya di-on-chip le di-laser, di-detector le disebediswa tse ding ke monyetla le phephetso bakeng sa ntshetsopele ya nakong e tlang ya di-modulator tsa lithium niobate tsa filimi e tshesane. Modulator ya electro-optic ya thin film lithium niobate e tla bapala karolo ya bohlokwa haholo ho photon ya microwave, puisano ya optical le masimo a mang.
Nako ea poso: Mmesa-07-2025