Modulator ea electro-optic e sebetsang hantle haholo: modulator ea filimi e tšesaane ea lithium niobate

Modulator ea electro-optic e sebetsang hantle haholo:modulator ea filimi e tšesaane ea lithium niobate

Modulator ea electro-optical (Modulator ea EOM) ke modulator e entsoeng ka ho sebelisa phello ea electro-optical ea likristale tse itseng tsa electro-optical, tse ka fetolang matšoao a elektroniki a lebelo le phahameng lisebelisoa tsa puisano hore e be matšoao a optical. Ha kristale ea electro-optic e kenngoa tšimong ea motlakase e sebelisitsoeng, index ea refractive ea kristale ea electro-optic e tla fetoha, 'me litšobotsi tsa maqhubu a optical tsa kristale le tsona li tla fetoha ka ho loketseng, e le ho hlokomela phetoho ea amplitude, phase le polarization boemo ba lets'oao la optical, le ho fetola lets'oao la elektroniki le lebelo le phahameng sesebelisoa sa puisano hore e be lets'oao la optical ka modulation.

Hona jwale, ho na le mefuta e meraro e meholo yali-modulator tsa electro-optic'marakeng: li-modulator tse thehiloeng ho silicon, li-modulator tsa phosphide ea indium le filimi e tšesaanemodulator ea lithium niobateHar'a tsona, silicon ha e na coefficient e tobileng ea electro-optical, ts'ebetso e akaretsa haholoanyane, e loketse feela tlhahiso ea modulator ea moduli ea transceiver ea phetiso ea data ea sebaka se sekhutšoanyane, indium phosphide le hoja e loketse moduli ea transceiver ea marang-rang a puisano ea optical ea sebaka se mahareng, empa litlhoko tsa ts'ebetso ea kopanyo li holimo haholo, litšenyehelo li phahame haholo, ts'ebeliso e tlas'a meeli e itseng. Ka lehlakoreng le leng, kristale ea lithium niobate ha e ruile feela ka phello ea photoelectric, phello ea sete ea photorefractive, phello e seng ea linear, phello ea electro-optical, phello ea acoustic optical, phello ea piezoelectric le phello ea thermoelectric li lekana le e le 'ngoe, 'me ka lebaka la sebopeho sa eona sa lattice le sebopeho se ruileng sa sekoli, litšobotsi tse ngata tsa lithium niobate li ka laoloa haholo ke sebopeho sa kristale, doping ea element, taolo ea boemo ba valence, jj. Finyella ts'ebetso e phahameng ea photoelectric, joalo ka coefficient ea electro-optical ea ho fihlela ho 30.9pm/V, e phahameng haholo ho feta indium phosphide, 'me e na le phello e nyane ea chirp (phello ea chirp: e bolela ketsahalo eo maqhubu a ka har'a pulse a fetohang ka nako nakong ea ts'ebetso ea phetisetso ea laser pulse. Phello e kholo ea chirp e fella ka karolelano e tlase ea lets'oao-lerata le phello e seng ea linear), karolelano e ntle ea ho fela (karolelano ea matla a tloaelehileng a boemo ba "on" ba lets'oao ho boemo ba lona ba "off"), le botsitso bo phahameng ba sesebelisoa. Ho phaella moo, mokhoa oa ho sebetsa oa modulator ea lithium niobate ea filimi e tšesaane o fapane le oa modulator e thehiloeng ho silicon le indium phosphide modulator e sebelisang mekhoa ea ho fetola motlakase e seng ea linear, e sebelisang phello ea electro-optical e otlolohileng ho kenya lets'oao le fetotsoeng ka motlakase ho carrier ea optical, 'me sekhahla sa modification se khethoa haholo ke ts'ebetso ea electrode ea microwave, kahoo lebelo le phahameng la modification le ho latellana hammoho le tšebeliso e tlase ea matla li ka finyelloa. Ho latela se boletsoeng ka holimo, lithium niobate e fetohile khetho e ntle bakeng sa ho lokisa li-modulator tsa electro-optic tse sebetsang hantle, tse nang le mefuta e mengata ea lits'ebetso marang-rang a puisano a kopaneng a 100G/400G le litsi tsa data tse lebelo le phahameng haholo, 'me li ka fihlella libaka tse telele tsa phetisetso ea lik'hilomithara tse fetang 100.

Lithium niobate e le thepa e fetolang ea "phetoho ea photon", leha e bapisoa le silicon le indium phosphide e na le melemo e mengata, empa hangata e hlaha ka mokhoa oa thepa e ngata sesebelisoa, leseli le lekanyelitsoe ho tataiso ea maqhubu a sefofane e entsoeng ke ho hasana ha ion kapa phapanyetsano ea proton, phapang ea index ea refractive hangata e nyane haholo (hoo e ka bang 0.02), boholo ba sesebelisoa bo boholo haholo. Ho thata ho fihlela litlhoko tsa miniaturization le kopanyo ealisebelisoa tsa optical, 'me mohala oa eona oa tlhahiso o ntse o fapane le mohala oa ts'ebetso oa li-microelectronics tsa 'nete,' me ho na le bothata ba litšenyehelo tse phahameng, kahoo ho thehoa ha filimi e tšesaane ke tataiso ea bohlokoa ea nts'etsopele bakeng sa lithium niobate e sebelisoang ho li-modulator tsa electro-optical.