Kufambira mberi kwetsvagiridzo yemutete firimu lithium niobate electro-optic modulator
Electro-optic modulator ndiyo musimboti mudziyo we optical communication system uye microwave photonic system. Inogadzirisa chiedza chinopararira munzvimbo yakasununguka kana optical waveguide nekushandura refractive index yezvinhu zvinokonzerwa nemagetsi akaiswa. Iyo yechinyakare lithium niobateelectro-optical modulatorinoshandisa yakawanda lithium niobate zvinhu se electro-optical material. Iyo imwe chete crystal lithium niobate zvinhu inogadzirwa munharaunda kuti igadzire waveguide kuburikidza netitanium diffusion kana proton exchange process. Iyo refractive index musiyano pakati peiyo core layer uye cladding layer idiki kwazvo, uye waveguide ine kushomeka kwekubatanidza kumunda wechiedza. Hurefu hwose hwepakeji ye electro-optic modulator inowanzoita 5 ~ 10 cm.
Lithium Niobate paIsulator (LNOI) tekinoroji inopa nzira inoshanda yekugadzirisa dambudziko rehukuru hukuru hwe lithium niobate electro-optic modulator. Iyo refractive index musiyano pakati pe waveguide core layer uye cladding layer inosvika 0.7, iyo inosimudzira zvakanyanya iyo optical modhi inosunga kugona uye electro-optical regulation mhedzisiro yewaveguide, uye yave yekutsvagisa hotspot mumunda we electro-optical modulator.
Nekuda kwekufambira mberi kweiyo micro-machining tekinoroji, kuvandudzwa kwe electro-optic modulators yakavakirwa paLNOI papuratifomu yakafambira mberi nekukurumidza, ichiratidza maitiro ehumwe compact size uye kuenderera mberi kwekuvandudza kwekuita. Zvinoenderana neiyo waveguide chimiro chinoshandiswa, iyo yakaonda firimu lithium niobate electro-optic modulators yakanangana yakamisikidzwa waveguide electro-optic modulators, yakatakura hybrid.waveguide modulatorsuye hybrid silicon yakabatanidzwa waveguide electro-optic modulators.
Parizvino, kuvandudzwa kweiyo yakaoma etching process inoderedza zvakanyanya kurasikirwa kwefirimu yakaonda lithium niobate waveguide, ridge yekurodha nzira inogadzirisa dambudziko rekuomerwa kwepamusoro etching process, uye yaona iyo lithium niobate electro-optic modulator ine voltage isingasviki 1 V hafu wave, uye musanganiswa neyakakura SOI tekinoroji inoenderana nemaitiro ekubatanidzwa kwehybrid photon uye elekitironi. Thin film lithium niobate tekinoroji ine zvakanakira mukuona kurasikirwa kwakaderera, saizi diki uye hombe bandwidth yakasanganiswa electro-optic modulator pane chip. Nechepfungwa, zvinofanotaurwa kuti 3mm yakaonda firimu lithium niobate push-pullM⁃Z modulator's3dB electro-optical bandwidth inogona kusvika ku400 GHz, uye bandwidth yeyedzera yakagadziridzwa yakaonda firimu lithium niobate modulator yakanzi ichangopfuura zana GHz, iyo ichiri kure neiyo theoretical yepamusoro muganho. Iko kunatsurudzwa kwakaunzwa nekugadzirisa iwo ekutanga masisitimu ma paramita ane mashoma. Mune ramangwana, kubva pamaonero ekuongorora maitiro matsva uye zvimiro, sekugadzira yakajairwa coplanar waveguide electrode seyakakamurwa microwave electrode, kuita kwemodulator kunogona kuvandudzwa.
Uye zvakare, kuzadzikiswa kweiyo yakabatanidzwa modulator chip kurongedza uye pa-chip heterogeneous kubatanidzwa nema lasers, madhigirii uye zvimwe zvishandiso zvese mukana uye dambudziko rekuvandudza kweramangwana remutete firimu lithium niobate modulators. Thin film lithium niobate electro-optic modulator ichaita basa rakakosha mumicrowave photon, optical communication uye mamwe minda.
Nguva yekutumira: Kubvumbi-07-2025