Kafukufuku wa filimu yopyapyala ya lithiamu niobate electro-optic modulator

Kupita patsogolo kwa kafukufuku wafilimu woonda lithiamu niobate electro-optic modulator

Electro-optic modulator ndiye chida chachikulu cha njira yolumikizirana yolumikizirana ndi ma microwave photonic system. Imawongolera kuwala komwe kumafalikira mu malo aulere kapena optical waveguide posintha refractive index ya zinthu zomwe zimayambitsidwa ndi gawo lamagetsi. The zachikhalidwe lithium niobateelectro-optical moduleamagwiritsa ntchito zochulukira za lithiamu niobate ngati ma electro-optical material. Chida chimodzi cha crystal lithium niobate chimapangidwa kwanuko kuti chipange ma waveguide kudzera mu kufalikira kwa titaniyamu kapena kusinthana kwa proton. Kusiyana kwa refractive index pakati pa core layer ndi cladding layer ndi kakang'ono kwambiri, ndipo waveguide ili ndi kuthekera kosamangika kumunda wowunikira. Kutalika konse kwa makina opangira ma electro-optic modulator nthawi zambiri kumakhala 5 ~ 10 cm.

Tekinoloje ya Lithium Niobate pa Insulator (LNOI) imapereka njira yabwino yothetsera vuto lalikulu la lithiamu niobate electro-optic modulator. Kusiyana kwa refractive index pakati pa waveguide core layer ndi cladding layer mpaka 0.7, komwe kumathandizira kwambiri luso lomangika la optical mode ndi electro-optical regulation effect ya waveguide, ndipo yakhala malo opangira kafukufuku m'munda wa electro-optical modulator.

Chifukwa cha kupita patsogolo kwaukadaulo wamakina ang'onoang'ono, chitukuko cha ma electro-optic modulators kutengera nsanja ya LNOI yapita patsogolo mwachangu, kuwonetsa kukula kwapang'onopang'ono komanso kuwongolera kosalekeza kwa magwiridwe antchito. Malinga ndi mawonekedwe a waveguide omwe amagwiritsidwa ntchito, filimu yopyapyala ya lithiamu niobate electro-optic modulators imakhazikika mwachindunji ma waveguide electro-optic modulators, odzaza wosakanizidwa.ma waveguide modulatorsndi hybrid silicon Integrated waveguide electro-optic modulators.

Pakali pano, kusintha youma etching ndondomeko kwambiri amachepetsa imfa ya woonda filimu lifiyamu niobate waveguide, lokwera Mumakonda njira amathetsa vuto la mkulu etching ndondomeko movutikira, ndipo wazindikira lifiyamu niobate electro-optic modulator ndi voteji zosakwana 1 V theka yoweyula, ndi osakaniza ndi luso SOI okhwima akugwirizana ndi mchitidwe wa kusakanikirana hybrid photon ndi elekitironi. Tekinoloje yopyapyala ya lithiamu niobate ili ndi zabwino pakuzindikira kutayika kochepa, kakulidwe kakang'ono ndi bandwidth yayikulu Integrated electro-optic modulator pa chip. Mwachidziwitso, zimanenedweratu kuti filimu yopyapyala ya 3mm ya lithiamu niobate push-pullMa module a M⁃Z3dB electro-optical bandwidth imatha kufika ku 400 GHz, ndi bandiwifi ya filimu yopyapyala yokonzekera lifiyamu niobate modulator yanenedwa kuti iposa 100 GHz, yomwe idakali kutali ndi malire apamwamba. Kuwongolera komwe kumabwera ndi kukhathamiritsa magawo oyambira kumachepa. M'tsogolomu, poyang'ana njira zatsopano ndi zomangamanga, monga kupanga electrode ya coplanar waveguide electrode ngati gawo lamagetsi la microwave, ntchito ya modulator ikhoza kupititsidwa patsogolo.

Komanso, kukwaniritsidwa kwa Integrated modulator chip ma CD ndi pa-chip heterogeneous kusakanikirana ndi lasers, zowunikira ndi zipangizo zina zonse ndi mwayi ndi chovuta kwa tsogolo chitukuko cha woonda filimu lithiamu niobate modulators. Filimu yopyapyala ya lithiamu niobate electro-optic modulator idzagwira ntchito yofunika kwambiri mu microwave photon, kulankhulana kwa kuwala ndi madera ena.