High performance electro-optic modulator: filimu yopyapyala ya lithiamu niobate modulator

High performance electro-optic modulator:woonda filimu lithiamu niobate modulator

Electro-optical modulator (EOM module) ndi modulator yopangidwa pogwiritsa ntchito electro-optical effect ya electro-optical crystals, yomwe imatha kusintha ma siginecha othamanga kwambiri pazida zoyankhulirana kukhala ma siginecha owoneka. Pamene kristalo wa electro-optic ikugwiritsidwa ntchito kumunda wamagetsi, chiwerengero cha refractive cha kristalo wa electro-optic chidzasintha, ndipo mawonekedwe a kuwala kwa kristalo adzasinthanso moyenerera, kuti azindikire kusintha kwa matalikidwe, gawo ndi polarization ya chizindikiro cha kuwala, ndikusintha chizindikiro chamagetsi chothamanga kwambiri mu chipangizo choyankhulirana kudzera mu chipangizo cha optical.

Pakali pano, pali mitundu itatu ikuluikulu yaelectro-optic modulatorspamsika: ma modulators a silicon-based, indium phosphide modulators ndi filimu yopyapyalalithiamu niobate modulator. Pakati pawo, pakachitsulo alibe mwachindunji elekitirolo kuwala koyenera, ntchito ndi zambiri ambiri, okha oyenera kupanga mtunda waufupi deta kufala transceiver gawo module, indium phosphide ngakhale oyenera sing'anga-atali mtunda kuwala kulankhulana maukonde transceiver gawo, koma kusakanikirana zofunika ndondomeko ndi okwera kwambiri, mtengo wake ndi wokwera kwambiri, ntchitoyo imakhudzidwa ndi zofooka zina. Mosiyana, lifiyamu niobate krustalo si wolemera mu photoelectric tingati anapereka photorefractive kwenikweni, zotsatira electro-optical, lamayimbidwe kuwala tingati, piezoelectric zotsatira ndi zotsatira thermoelectric ndi ofanana ndi mmodzi, ndipo chifukwa cha kapangidwe latice ndi olemera chilema dongosolo, katundu ambiri lifiyamu niobate akhoza kwambiri kulamulidwa ndi kristalo, zikuchokera kulamulira dziko, crystal kapena chiphaso. photoelectric performance, monga electro-optical coefficient of up to 30.9pm/V, high kwambiri kuposa indium phosphide, ndipo imakhala ndi phokoso laling'ono (chirp effect: imatanthawuza chodabwitsa kuti mafupipafupi mkati mwa kugunda amasintha ndi nthawi panthawi ya laser pulse transmission process. chizindikiro cha "kuyaka" mpaka "chozimitsa"), komanso kukhazikika kwa chipangizocho. Komanso, limagwirira ntchito wa woonda filimu lifiyamu niobate modulator ndi wosiyana ndi silicon ofotokoza modulator ndi indium phosphide modulator ntchito njira nonlinear kusinthasintha, amene amagwiritsa liniya electro-optical tingati katundu ndi magetsi modulated siginecha pa chonyamulira kuwala, ndi mlingo kusinthasintha makamaka anatsimikiza ndi ntchito ya microwave modude mowa kwambiri ndi liwiro la ma electro-optical akhoza kutsika ndi liwiro la magetsi modulated pa chonyamulira kuwala. zatheka. Kutengera pamwamba, lifiyamu niobate wakhala kusankha abwino kwa yokonza mkulu-ntchito electro-optic modulators, amene ali osiyanasiyana ntchito mu 100G/400G coherent kuwala maukonde kulankhulana ndi kopitilira muyeso-mkulu-liwiro malo deta, ndipo akhoza kukwaniritsa kutalika kufala mtunda wa makilomita oposa 100.

Lithium niobate ngati zinthu zosokoneza za "photon revolution", ngakhale poyerekeza ndi silicon ndi indium phosphide zili ndi ubwino wambiri, koma nthawi zambiri zimawoneka ngati mawonekedwe azinthu zambiri mu chipangizocho, kuwala kumangokhala ndi mawonekedwe a ndege omwe amapangidwa ndi kufalikira kwa ion kapena kusinthana kwa proton, kusiyana kwa index refractive kumakhala kochepa (pafupifupi 0.02 chipangizo chachikulu). Ndizovuta kukwaniritsa zosowa za miniaturization ndi kuphatikiza kwazida zowonera, ndipo mzere wake kupanga akadali wosiyana ndi yeniyeni microelectronics ndondomeko mzere, ndipo pali vuto la mtengo wapamwamba, kotero woonda filimu mapangidwe ndi yofunika chitukuko malangizo kwa lifiyamu niobate ntchito mu electro-optical modulators.