Ukusebenza okuphezulu kwemodyuli ye-electro-optic: ifilimu encinci ye-lithium niobate modulator

Ukusebenza okuphezulu kwemodyuli ye-electro-optic:ifilimu encinci ye-lithium niobate imodyuli

Imodyuli ye-electro-optical (Imodyuli ye-EOM) i-modulator eyenziwe ngokusebenzisa i-electro-optical effect ye-electro-optical crystals ethile, enokuguqula izibonakaliso ze-elektroniki ze-speed-speed kwizixhobo zonxibelelwano kwiimpawu ze-optical. Xa ikristale ye-electro-optic iphantsi kwendawo yombane esetyenzisiweyo, isalathiso se-refractive sekristal ye-electro-optic iya kutshintsha, kunye neempawu zamaza okukhanya zekristale nazo ziya kutshintsha ngokufanelekileyo, ukuze kuqondwe ukumodareyithwa kwe-amplitude, isigaba kunye ne-polarization yesimo sophawu lokukhanya, kunye nokuguqula umqondiso we-elektroniki okhawulezayo kwisixhobo sonxibelelwano ngesixhobo sonxibelelwano kwisixhobo se-optical.

Okwangoku, kukho iintlobo ezintathu eziphambili zeiimodyuli ze-electro-optickwimarike: iimodyuli ezisekelwe kwi-silicon, iimodyuli ze-indium phosphide kunye nefilimu encinciimodyuli ye-lithium niobate. Phakathi kwabo, i-silicon ayinayo i-coefficient ye-electro-optical ethe ngqo, intsebenzo ibanzi ngakumbi, ifanelekile kuphela kwimveliso yemodyuli yemodyuli yokudlulisa idatha ye-transceiver, i-indium phosphide nangona ifanelekile kwimodyuli ye-transceiver yenethiwekhi yonxibelelwano olude olude, kodwa iimfuno zenkqubo yokudibanisa ziphezulu kakhulu, iindleko ziphezulu kakhulu, isicelo sixhomekeke kwimida ethile. Ngokwahlukileyo, i-lithium niobate crystal ayityebi kuphela kwimpembelelo ye-photoelectric, isethi ye-photorefractive effect, i-nonlinear effect, i-electro-optical effect, i-acoustic optical effect, i-piezoelectric effect kunye ne-thermoelectric effect ilingana neyodwa, kwaye ngenxa yesakhiwo sayo se-lattice kunye nesakhiwo esinesiphako esicebileyo, iipropati ezininzi ze-lithium niobate zinokulawulwa kakhulu yi-super crystal, i-valuement, i-value , i-value . ukusebenza kwe-photoelectric, njenge-coefficient ye-electro-optical ukuya kwi-30.9pm / V, iphezulu kakhulu kune-indium phosphide, kwaye inempembelelo encinci ye-chirp (impembelelo ye-chirp: ibhekisela kwinto yokuba i-frequency ngaphakathi kwe-pulse iyatshintsha ngexesha lenkqubo yokuhanjiswa kwe-laser pulse. Imo yophawu “ivuliwe” ukuya kwimeko “yokucima”), kunye nozinzo oluphezulu lwesixhobo. Ukongeza, indlela yokusebenza yefilimu ecekethekileyo ye-lithium niobate modulator yahlukile kuleyo yemodareyitha esekwe kwisilicon kunye ne-indium phosphide modulator isebenzisa iindlela zokumodareyitha ezingahambelaniyo, esebenzisa i-linear electro-optical effect ukulayisha isiginali emodareyithiweyo yombane kwi-optical carrier, kwaye izinga lokumodareyitha limiselwa ikakhulu kukusebenza kwe-modude ye-microwave esezantsi njengesantya sombane esisezantsi njengesantya sombane we-microwave. yimpumelelo. Ngokusekelwe apha ngasentla, i-lithium niobate ibe yinto efanelekileyo yokulungiswa kweemodyuli eziphezulu ze-electro-optic, ezinoluhlu olubanzi lwezicelo kwi-100G / 400G uthungelwano oluhambelanayo lwe-optical network kunye namaziko edatha ye-ultra-high-speed, kwaye inokufikelela umgama omde wokuhanjiswa kweekhilomitha ezingaphezu kweekhilomitha ezili-100.

I-Lithium niobate njengento ephazamisayo ye "photon revolution", nangona ithelekiswa ne-silicon kunye ne-indium phosphide ineenzuzo ezininzi, kodwa ihlala ibonakala ngendlela yezinto ezininzi kwisixhobo, ukukhanya kulinganiselwe kwi-waveguide yendiza eyenziwe yi-ion diffusion okanye iproton exchange, umehluko we-refractive index udla ngokuba mncinci (malunga ne-0.02 ubukhulu besixhobo). Kunzima ukuhlangabezana neemfuno ze-miniaturization kunye nokudibanisaizixhobo zamehlo, kwaye umgca wayo wemveliso usahluke kumgca wenkqubo ye-microelectronics yangempela, kwaye kukho ingxaki yeendleko eziphezulu, ngoko ke ukubunjwa kwefilimu encinci yindlela ebalulekileyo yophuhliso lwe-lithium niobate esetyenziswa kwiimodyuli ze-electro-optical.