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 sebakeng sa motlakase o 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 lemoha ho feto-fetoha ha boemo ba amplitude, mohato le polarization ea lets'oao la optical, le ho fetola lets'oao la elektronike le lebelo le phahameng ka har'a sesebelisoa sa puisano ka mochine oa optical.

Hajoale, ho na le mefuta e meraro ea mantlha eali-modulators tsa electro-optic'marakeng: li-modulators tse thehiloeng ka silicon, li-modulator tsa indium phosphide le filimi e tšesaanelithium niobate modulator. Har'a bona, silicon ha e na ka ho toba electro-optical coefficient, tshebetso ke ho feta ka kakaretso, feela a loketse bakeng sa tlhahiso ea nako e khutsoanyane ya data phetiso transceiver modulator, indium phosphide le hoja a loketse bakeng sa seaplane sebaka se selelele puisano optical netweke transceiver mmojule, empa ditlhoko tsa tshebetso ya ho kopanya li phahameng haholo, litšenyehelo li batla li le holimo, 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, thepa e ngata ea lithium niobate e ka laoloa haholo ke taolo ea kristale, sebopeho sa boemo, joalo-joalo. photoelectric ts'ebetso, joalo ka electro-optical coefficient ea ho fihla ho 30.9pm/V, e phahame 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 sekhahla a fetoha ha nako e ntse e feta nakong ea ts'ebetso ea phetisetso ea pulse. boemo ba "mo" ho fihlela boemo ba "tima"), le botsitso bo holimo ba sesebelisoa. Ntle le moo, mochini o sebetsang oa filimi e tšesaane ea lithium niobate modulator o fapane le oa modulator ea silicon-based le indium phosphide modulator e sebelisang mekhoa e sa tloaelehang ea modulation, e sebelisang linear electro-optical effect ho kenya lets'oao le fetotsoeng ka motlakase ho sejari sa optical, mme sekhahla sa ho feto-fetoha ha maemo se khethoa haholo ke ts'ebetso ea mochini oa motlakase oa microwave le lebelo le tlase joalo ka lebelo la motlakase le tlase. fihlelletsoe. Ho itšetlehile ka se ka holimo, lithium niobate e fetohile khetho e nepahetseng bakeng sa ho lokisetsa 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 tse phahameng ka ho fetisisa, 'me li ka finyella sebaka se selelele sa phetisetso ea lik'hilomithara tse fetang 100.

Lithium niobate e le thepa e khelosang ea "photon revolution", leha e bapisoa le silicon le indium phosphide e na le melemo e mengata, empa hangata e hlaha ka sebopeho sa lisebelisoa tse ngata sesebelisoa, leseli le lekanyelitsoe ho waveguide ea sefofane e entsoeng ke ion diffusion kapa phapanyetsano ea proton, phapang ea index ea refractive hangata e nyane (hoo e ka bang 0.02) 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.