Tsoelopele ea lipatlisiso tsafilimi e tšesaane ea lithium niobate electro-optic modulator
Electro-optic modulator ke sesebelisoa sa mantlha sa sistimi ea puisano ea optical le sistimi ea microwave photonic. E laola leseli le hasang sebakeng sa mahala kapa optical waveguide ka ho fetola index ea refractive ea thepa e bakoang ke tšimo ea motlakase e sebelisitsoeng. Lithium niobate ea setsomochine oa motlakase oa motlakasee sebelisa lintho tse ngata tsa lithium niobate e le lisebelisoa tsa electro-optical. Thepa e le 'ngoe ea kristale ea lithium niobate e entsoe sebakeng sa heno ho theha waveguide ka ho phatlalatsoa ha titanium kapa ts'ebetso ea phapanyetsano ea proton. Phapang ea index ea refractive lipakeng tsa core layer le cladding layer 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 ka Insulator (LNOI) e fana ka mokhoa o atlehang oa ho rarolla bothata ba boholo bo boholo ba lithium niobate electro-optic modulator. Phapang ea index ea refractive lipakeng tsa waveguide core layer le cladding layer e fihla ho 0.7, e ntlafatsang haholo bokhoni ba ho tlama mokhoa oa optical le phello ea taolo ea electro-optical ea waveguide, 'me e fetohile sebaka sa lipatlisiso lefapheng la electro-optical modulator.
Ka lebaka la tsoelo-pele ea theknoloji ea micro-machining, nts'etsopele ea li-modulators tsa electro-optic tse thehiloeng sethaleng sa LNOI li entse tsoelo-pele e potlakileng, e bontšang mokhoa oa boholo bo kopanetsoeng le ntlafatso e tsoelang pele ea ts'ebetso. Ho latela sebopeho sa waveguide se sebelisitsoeng, lifilimi tse tšesaane tse tloaelehileng tsa lithium niobate electro-optic modulators ke li-waveguide electro-optic modulators tse kentsoeng ka kotloloho.li-modulators tsa waveguidele hybrid silicon integrated waveguide electro-optic modulators.
Hajoale, ntlafatso ea ts'ebetso e ommeng e fokotsa haholo tahlehelo ea filimi e tšesaane ea lithium niobate waveguide, mokhoa oa ho roala maralla o rarolla bothata ba bothata bo phahameng ba etching, mme o hlokometse hore lithium niobate electro-optic modulator e nang le voltage e ka tlase ho 1 V halofo ea leqhubu, 'me motsoako le theknoloji ea SOI e holileng e lumellana le mokhoa oa ho kopanya photon le electron. Theknoloji ea lithium niobate ea filimi e tšesaane e na le melemo ea ho lemoha tahlehelo e tlase, boholo bo nyane le bandwidth e kholo e kopaneng ea electro-optic modulator ho chip. Ka khopolo, ho boleloa esale pele hore filimi e tšesaane ea 3mm lithium niobate push-pullModulator ea M⁃Z3dB electro-optical bandwidth e ka fihla ho 400 GHz, 'me bandwidth ea filimi e tšesaane e entsoeng ka liteko ea lithium niobate e tlalehiloe e feta 100 GHz, e ntseng e le hole le moeli o ka holimo oa khopolo-taba. Ntlafatso e tlisoang ke ho ntlafatsa maemo a mantlha a moralo e na le moeli. 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 eleketrode ea microwave e arohaneng, ts'ebetso ea modulator e ka ntlafatsoa le ho feta.
Ho phaella moo, ho phethahala ha li-modulator chip packaging le on-chip heterogeneous integration le li-lasers, li-detectors le lisebelisoa tse ling ke monyetla le phephetso bakeng sa tsoelo-pele ea nakong e tlang ea lifilimi tse tšesaane tsa lithium niobate modulators. Thin film lithium niobate electro-optic modulator e tla phetha karolo ea bohlokoa haholo ho microwave photon, puisano ea optical le masimo a mang.
Nako ea poso: Apr-07-2025