Kev Ua Tau Zoo Electro-Optic Modulator: Cov Zaj Duab Xis Lithium Niobate Modulator

Kev Ua Tau Zoo Electro-Optic Modulator:Nyias Zaj Duab Xis Lithium Niobate Modulator

Lub electro-kho qhov muag (EOM Modulator) yog tus modulator tau ua siv cov nyhuv hluav taws xob tawm ntawm qee qhov chaw tsim hluav taws xob hluav taws xob, uas tuaj yeem hloov cov teeb tsa hluav taws xob siab rau hauv cov cim hluav taws xob. Thaum lub tshuab hluav taws xob electrostal yog raug rau ib qho chaw siv hluav taws xob, lub tshuab yoj hluav taws xob ntawm lub crystal yuav tau hloov pauv, yog li kom paub cov kev hloov kho ntawm cov amplemitude, theem Thiab Polarization Xeev ntawm lub teeb liab kho qhov muag, thiab hloov lub teeb hluav taws xob nrawm hauv lub teeb hluav taws xob siab rau hauv cov teeb liab hloov tshiab los ntawm kev hloov kho.

Tam sim no, muaj peb hom tseem ceeb ntawmElectro-Optic ModulatorsNtawm kev ua lag luam: Silicon-based modulators, indium phosphide modulators thiab nyias zaj duab xisLithium Niobate ModulatorCov. Ntawm lawv, silicon tsis muaj cov khoom siv hluav taws xob ncaj qha, cov ntaub ntawv ntau dua, tsuas yog tsim nyog rau kev sib txuas lus luv luv, tsuas yog tsim nyog rau kev sib txuas lus hauv nruab nrab ntawm kev sib txuas lus network Tab sis cov txheej txheem sib xyaw ua ke yuav tsum muaj ntau heev, tus nqi yog tus nqi siab, daim ntawv thov yuav raug rau qee yam kev txwv. Nyob rau hauv sib piv, lithium niobate siv lead ua tsis yog tsuas yog nplua nuj nyob rau hauv cov nyhuv physiaelectract, thiab ua tsaug rau nws cov qauv ntxaij thiab cov nplua nuj kho tsis ncaj ncees , ntau yam khoom ntawm lithium niobate tuaj yeem tsim tau zoo heev los ntawm kev siv lead ua ke, doping, Kev Tsim Kho Lub Xeev, thiab lwm yam. Ua tau zoo tshaj plaws phos phos photicle, thiab muaj qhov tshwm sim me me: yog hais txog qhov tshwm sim uas tau tshwm sim hauv Cov mem tes hloov nrog lub sijhawm thaum lub sijhawm Laser Pulse Cov txheej txheem kis tau. Ib tug loj chirp cov txiaj ntsig tau nyob rau hauv qis lub teeb liab-rau-suab nrov Cov nyhuv), ib qho zoo extinthtion piv (qhov nruab nrab fais fab sib npaug ntawm lub teeb liab "ntawm" lub xeev rau nws "OFF" xeev. In addition, the working mechanism of the thin film lithium niobate modulator is different from that of the silicon-based modulator and indium phosphide modulator using nonlinear modulation methods, which uses linear electro-optical effect to load the electrically modulated signal onto the optical carrier, thiab tus nqi ntsuas yog tsuas yog txiav txim siab los ntawm kev ua tau ntawm microwave electrode, yog li ntau dua linarity raws li qis zog Tau siv tau. Raws li cov saum toj no, lithium niobate tau dhau los ua kev xaiv zoo tshaj plaws hauv 100g / 400g coherent optical sib txuas lus tes hauj lwm, thiab muaj peev xwm Ua tiav kev sib ntaus sib tua ntev ntev tshaj 100 km.

Lithium Niobate raws li cov khoom siv subversive ntawm "cov kev hloov pauv ntawm lub ntsej muag" diffusion lossis kev sib hloov ua kom sib txawv, qhov ntsuas qhov hluav taws xob qhov sib txawv feem ntau yog qhov me me (txog 0.02), lub cuab yeej loj yog tus loj. Nws yog qhov nyuaj kom tau raws li qhov xav tau ntawm miniaturization thiab kev sib xyaw ua ke ntawmCov khoom siv kho muag khoom, thiab nws txoj kab ntau lawm tseem txawv ntawm cov txheej txheem microelectronics tiag tiag yog ib qho kev txhim kho siab rau lithium niobate siv nyob rau hauv electro-optical modulators.


Lub Sijhawm Post: Kaum-24-2024