Modulator ea electro-optic e phahameng: filimi e tšesaane ea lithium niobate modulator

Modulator e phahameng ea tšebetso ea electro-optic:filimi e tšesaane ea lithium niobate modulator

Modulator ea electro-optical (EOM modulator) 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 lipontšo tsa 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 optical wave tsa kristale le tsona li tla fetoha ka tsela e nepahetseng, e le ho hlokomela ho feto-fetoha ha amplitude, mohato. le boemo ba polarization ea lets'oao la optical, le ho fetolela lets'oao le phahameng la elektronike sesebelisoa sa puisano hore e be lets'oao la optical ka modulation.

Hajoale, ho na le mefuta e meraro ea mantlha eali-modulators tsa electro-optic'marakeng: li-modulator tse thehiloeng ka silicon, li-modulator tsa indium phosphide le filimi e tšesaanelithium niobate modulator. Har'a bona, silicon ha e na e tobileng electro-optical coefficient, tshebetso ke ho feta ka kakaretso, feela loketseng bakeng sa tlhahiso ea e khutsoanyane data transceiver modulator modulator, indium phosphide le hoja ho loketse bakeng sa seaplane optical puisano marangrang transceiver mojule, empa litlhoko tsa ts'ebetso ea ho kopanya li phahame haholo, litšenyehelo li batla li phahame, kopo e tlas'a mefokolo e itseng. Ka lehlakoreng le leng, kristale ea lithium niobate ha e ruile feela ka phello ea photoelectric, e beha photorefractive effect, nonlinear effect, electro-optical effect, acoustic optical effect, piezoelectric effect le thermoelectric effect e lekana le e le 'ngoe,' me ka lebaka la sebopeho sa eona sa lattice le sebopeho se ruileng sa sekoli. , thepa e ngata ea lithium niobate e ka laoloa haholo ke sebopeho sa kristale, doping ea element, taolo ea boemo ba valence, joalo-joalo Finyelletsa ho feta photoelectric tshebetso, joalo ka electro-optical coefficient ea ho fihlela ho 30.9pm/V, e phahameng haholo ho feta indium phosphide, 'me e na le phello e nyenyane ea chirp (chirp effect: e bua ka ketsahalo ea hore maqhubu a ka har'a pulse a fetoha le nako nakong ea laser. Ts'ebetso ea phetisetso ea pulse Phello e kholoanyane ea chirp e fella ka karo-karolelano e tlase ea lets'oao le lerata le phello e sa lekanyetsoang), karo-karolelano e ntle ea ho timela (karolelano ea matla a karolelano ea matla a motlakase. boemo ba "mo" ho fihlela boemo ba "tima"), le botsitso bo holimo ba sesebelisoa. Ho phaella moo, mochine o sebetsang oa filimi e tšesaane ea lithium niobate modulator e fapane le ea modulator e thehiloeng ho silicon le indium phosphide modulator e sebelisang mekhoa e sa tloaelehang ea ho feto-fetoha, e sebelisang motlakase oa motlakase oa motlakase ho kenya lets'oao le fetotsoeng ka motlakase ho mochine oa optical, 'me sekhahla sa ho feto-fetoha ha matla se khethoa haholo ke ts'ebetso ea li-electrode tsa microwave, kahoo lebelo le phahameng la modulation le linearity hammoho le tšebeliso e tlase ea matla e ka ba teng. fihlelletsoe. Ho itšetlehile ka se boletsoeng ka holimo, lithium niobate e fetohile khetho e nepahetseng bakeng sa ho lokisoa ha li-modulators tsa electro-optic tse sebetsang hantle, tse nang le mefuta e mengata ea likopo ho 100G / 400G marang-rang a marang-rang a marang-rang a marang-rang le litsi tsa data tsa ultra-high-speed, 'me li ka khona. fumana sebaka se selelele sa phetiso ea lik'hilomithara tse fetang 100.

Lithium niobate e le thepa e senyang ea "photon revolution", le hoja e bapisoa le silicon le indium phosphide e na le melemo e mengata, empa hangata e hlaha ka mokhoa oa lisebelisoa tse ngata ka sesebelisoa, leseli le lekanyelitsoe ho waveguide ea sefofane e entsoeng ke ion. Phapang kapa phapanyetsano ea proton, phapang ea index ea refractive hangata e batla e le nyane (e ka ba 0.02), boholo ba sesebelisoa bo batla bo le boholo. Ho thata ho finyella litlhoko tsa miniaturization le kopanyo ealisebelisoa tsa optical, 'me mohala oa eona oa tlhahiso o ntse o fapane le mohala oa sebele oa microelectronics,' me ho na le bothata ba litšenyehelo tse phahameng, kahoo ho thehoa ha filimi e tšesaane ke tataiso ea bohlokoa ea nts'etsopele ea lithium niobate e sebelisoang ho li-modulators tsa electro-optical.