I-modulator ye-electro-optic esebenza kakuhle: i-modulator ye-lithium niobate yefilimu encinci

Imodulator ye-electro-optic esebenza kakuhle:i-modulator ye-lithium niobate yefilimu encinci

Imodulator ye-electro-optical (Imodulator ye-EOM) yimodulator eyenziwe kusetyenziswa isiphumo se-electro-optical seekristale ezithile ze-electro-optical, ezinokuguqula imiqondiso ye-elektroniki ekhawulezayo kwizixhobo zonxibelelwano ibe yimiqondiso ye-optical. Xa ikristale ye-electro-optic iphantsi kombane osetyenzisiweyo, isalathisi sokuqaqamba kwekristale ye-electro-optic siya kutshintsha, kwaye iimpawu zamaza okukhanya zekristale nazo ziya kutshintsha ngokufanelekileyo, ukuze kufezekiswe ukuguqulwa kwe-amplitude, isigaba kunye nemeko ye-polarization yesignali ye-optical, kwaye kuguqulwe isignali ye-elektroniki ekhawulezayo kwisixhobo sonxibelelwano ibe yisignali ye-optical ngokusebenzisa i-modulation.

Okwangoku, kukho iintlobo ezintathu eziphambili zeiimodulators ze-electro-optickwimarike: ii-modulators ezisekelwe kwi-silicon, ii-indium phosphide modulators kunye ne-thin filmi-modulator ye-lithium niobatePhakathi kwazo, i-silicon ayinayo i-electro-optical coefficient ethe ngqo, ukusebenza kwayo kubanzi ngakumbi, ifanelekile kuphela ekuveliseni i-modulator ye-transceiver ye-transmission data-distance short-distance, i-indium phosphide nangona ifanelekile kwi-medium-long-long distance optical communication network transceiver module, kodwa iimfuno zenkqubo yokudibanisa ziphezulu kakhulu, iindleko ziphezulu kakhulu, usetyenziso luxhomekeke kwimida ethile. Ngokwahlukileyo koko, i-lithium niobate crystal ayityebanga nje kuphela kwi-photoelectric effect, i-set photorefractive effect, i-nonlinear effect, i-electro-optical effect, i-acoustic optical effect, i-piezoelectric effect kunye ne-thermoelectric effect zilingana nenye, kwaye ngenxa yesakhiwo sayo se-lattice kunye nesakhiwo sayo esityebileyo se-defect, iipropati ezininzi ze-lithium niobate zinokulawulwa kakhulu yi-crystal composition, i-element doping, ulawulo lwe-valence state, njl. Ukufumana ukusebenza okuphezulu kwe-photoelectric, njenge-electro-optical coefficient ukuya kuthi ga kwi-30.9pm/V, ephezulu kakhulu kune-indium phosphide, kwaye ine-chirp effect encinci (i-chirp effect: ibhekisa kwinto yokuba i-frequency ngaphakathi kwe-pulse iyatshintsha ngokuhamba kwexesha ngexesha lenkqubo yokudluliselwa kwe-laser pulse. I-chirp effect enkulu ibangela umlinganiselo ophantsi wesignali-kwingxolo kunye ne-nonlinear effect), umlinganiselo olungileyo wokuphela (umlinganiselo wamandla ophakathi we-"on" yesignali kwi-"off" yayo), kunye nokuzinza okuphezulu kwesixhobo. Ukongeza, indlela yokusebenza ye-thin film lithium niobate modulator yahlukile kweye-silicon-based modulator kunye ne-indium phosphide modulator esebenzisa iindlela ze-nonlinear modulation, esebenzisa i-linear electro-optical effect ukulayisha isignali eguquliweyo ngombane kwi-optical carrier, kwaye izinga lokuguqulwa limiselwa kakhulu kukusebenza kwe-microwave electrode, ngoko ke isantya esiphezulu sokuguqulwa kunye nokuhambelana kunye nokusetyenziswa kwamandla okuphantsi kunokufezekiswa. Ngokusekelwe koku kungasentla, i-lithium niobate ibe lukhetho olufanelekileyo lokulungiselela ii-electro-optic modulators ezisebenzayo kakhulu, ezinoluhlu olubanzi lwezicelo kwiinethiwekhi zonxibelelwano ze-100G/400G ezihambelanayo kunye namaziko edatha akhawulezayo kakhulu, kwaye inokufikelela kumgama omde wokuhambisa ongaphezulu kweekhilomitha ezili-100.

I-lithium niobate njengesixhobo esiguqulayo se-"photon revolution", nangona xa ithelekiswa ne-silicon kunye ne-indium phosphide ineengenelo ezininzi, kodwa ihlala ibonakala ngendlela yesixhobo esikhulu kwisixhobo, ukukhanya kunqunyelwe kwi-plane waveguide eyenziwe yi-ion diffusion okanye i-proton exchange, umahluko we-refractive index uhlala umncinci (malunga ne-0.02), ubungakanani besixhobo bukhulu kakhulu. Kunzima ukuhlangabezana neemfuno ze-miniaturization kunye nokuhlanganiswa kweizixhobo ezibonakalayo, kwaye umgca wayo wemveliso usahlukile kumgca wenkqubo ye-microelectronics yokwenyani, kwaye kukho ingxaki yeendleko eziphezulu, ngoko ke ukwenziwa kwefilimu encinci yindlela ebalulekileyo yophuhliso lwe-lithium niobate esetyenziswa kwiimodulators ze-electro-optical.