Kufambira mberi kwekutsvagafirimu rakatetepa lithium niobate electro-optic modulator
Electro-optic modulator ndiyo chinhu chikuru che optical communication system uye microwave photonic system. Inodzora kupararira kwechiedza munzvimbo yakasununguka kana optical waveguide nekushandura refractive index yezvinhu zvinokonzerwa nekushandiswa kwemagetsi. Iyo yechinyakare lithium niobatemodulator yemagetsi-opticalinoshandisa zvinhu zve lithium niobate zvakawanda sezvinhu zve electro-optical. Chinhu chimwe chete che crystal lithium niobate chinogadzirwa munzvimbo iyoyo kuti chigadzire waveguide kuburikidza ne titanium diffusion kana proton exchange process. Musiyano we refractive index pakati pe core layer ne cladding layer mudiki kwazvo, uye waveguide haina simba rekusunga ku light field. Hurefu hwese hwe electro-optic modulator yakarongwa hunowanzova 5~10 cm.
Tekinoroji yeLithium Niobate on Insulator (LNOI) inopa nzira inoshanda yekugadzirisa dambudziko rehukuru hwakakura hwe lithium niobate electro-optic modulator. Musiyano we refractive index pakati pe waveguide core layer ne cladding layer unosvika 0.7, izvo zvinowedzera zvakanyanya kugona kwe optical mode binding uye electro-optical regulation effect ye waveguide, uye yave nzvimbo inonyanya kufarirwa mukutsvaga mumunda we electro-optical modulator.
Nekuda kwekufambira mberi kwetekinoroji yemichina midiki, kugadzirwa kwemamodulator emagetsi akavakirwa papuratifomu yeLNOI kwafambira mberi nekukurumidza, zvichiratidza kufambira mberi kwehukuru hwakati wandei uye kuvandudzwa kwekushanda kuri kuramba kuchienderera mberi. Zvichienderana nechimiro chewaveguide chinoshandiswa, mamodulator emagetsi emagetsi emhando yethin film lithium niobate electro-optic akagadzirwa zvakananga nemamodulator emagetsi emagetsi, akasanganiswa.mamodulator ekutungamira mafunguuye ma hybrid silicon integrated waveguide electro-optic modulators.
Parizvino, kuvandudzwa kwemaitiro ekucheka akaoma kunoderedza zvakanyanya kurasikirwa kwe thin film lithium niobate waveguide, nzira yekurodha ridge inogadzirisa dambudziko rekuoma kwakanyanya kwemaitiro ekucheka, uye yakaona lithium niobate electro-optic modulator ine voltage iri pasi pe 1 V half wave, uye kusanganiswa ne tekinoroji yakakura yeSOI kunoenderana nemaitiro ekubatanidzwa kwe photon ne electron hybrid. Tekinoroji yeThin film lithium niobate ine zvakanakira mukuita kurasikirwa kushoma, saizi diki uye bandwidth hombe integrated electro-optic modulator pa chip. Mupfungwa, zvinofungidzirwa kuti 3mm thin film lithium niobate push-pullModulator yeM⁃Z3dB electro-optical bandwidth inogona kusvika ku400 GHz, uye bandwidth ye thin film lithium niobate modulator yakagadzirwa nekuyedza yakataurwa kuti inopfuura 100 GHz, iyo ichiri kure nepfungwa yepamusoro. Kuvandudzwa kunounzwa nekugadzirisa ma parameter ekutanga ekuvaka kwakaganhurirwa. Mune ramangwana, kubva pakuona kwekutsvaga nzira itsva nemaumbirwo, akadai sekugadzira standard coplanar waveguide electrode se segmented microwave electrode, mashandiro emodulator anogona kuvandudzwa zvakanyanya.
Pamusoro pezvo, kuwanikwa kwekubatanidza machipisi e modulator akabatanidzwa uye kubatanidzwa kwemachipisi akasiyana-siyana nema lasers, detectors nezvimwe zvishandiso mukana uye dambudziko rekuvandudzwa kwe thin film lithium niobate modulators mune ramangwana. Thin film lithium niobate electro-optic modulator ichaita basa rakakosha mu microwave photon, optical communication nedzimwe nzvimbo.
Nguva yekutumira: Kubvumbi-07-2025