Siab linearityElectro-Optic Modulatorthiab Microwave photon daim ntawv thov
Nrog rau kev nce qib ntawm kev sib txuas lus, txhawm rau txhim kho kev sib txuas lus sib txuas, cov neeg hluav taws xob kom ua tiav cov tswv yim sib ntxiv, thiab microwave yuav yug. Lub Electro-Optical Modulator xav tau rau kev hloov pauv ntawm hluav taws xob rau lub teeb hauvmicrowave photonic tshuab, thiab cov kauj ruam tseem ceeb no feem ntau txiav txim siab qhov ua tau zoo ntawm tag nrho cov kab ke. Txij li thaum hloov dua siab tshiab ntawm xov tooj cua ntsuas ntsuas mus rau qhov chaw kho qhov muag yog ib qho teeb meem ntawm lub teeb liab, thiab zoo tib yamElectro-Kho Kom Zoo Nkauj ModulatorsMuaj txoj hauv kev nonlinearity, muaj cov teeb liab kev sib txawv hauv cov txheej txheem hloov dua siab tshiab. Txhawm rau ua kom tiav kwv yees li kwv yees kab kwv yees, kev ua haujlwm ntawm tus modulator feem ntau yog tsis tuaj yeem ua tau raws li microwave pothnab txuas rau cov kab ke ntawm tus modulator. Electro-Optic Modulators nrog cov qib siab yog qhov xav tau sai.
Lub siab-ceev cov ntaub ntawv ua kom muaj zog ntawm silicon cov ntaub ntawv yog feem ntau ua tiav los ntawm cov cab kuj ntshav paug hloov (FCD) cov nyhuv. Ob qho tib si FCD cov nyhuv thiab pn junction modulation yog nonlinear, uas ua rau Silicon Modulator tsawg dua lithip niobate modulator. Lithium niobate cov ntaub ntawv pom zoo tshaj plawsElectro-Kho Kom Zoothaj chaw vim lawv cov nyhuv pucker. Nyob rau tib lub sijhawm, lithium niobate cov khoom muaj qhov zoo ntawm cov txheej txheem loj, kev siv cov duab nyias nyias, kev siv cov khoom siv tawv nqaij tawv ultrasonic. Piv nrog silicon Yuav luag tsis muaj "lub phaj luv", tab sis kuj ua kom tiav qib siab. Nyias zaj duab xis lithium niobate (lnoi) Electro-optic modulator ntawm insulator ntawm insulator tau dhau los ua kev txhim kho kev txhim kho. Nrog rau kev txhim kho ntawm nyias zaj duab xis lithium niobate khoom siv thev naus laus zis, lub siab sib koom ua ke ntawm cov kws tshaj lij ntawm kev lag luam thoob ntiaj teb thiab kev lag luam.
Cov yam ntxwv ntawm cov yeeb yaj kiab nyias lithium niobate
Hauv Tebchaws Asmeskas Dap Ar Kev Npaj Ua Ntej ntawm cov khoom siv lithium niobate uas ua rau nws ua tau, tom qab ntawd qhov chaw yug ntawm lub teeb meem Cov. Qhov no yog vim lithium niobate sib xyaw ua ke electro-optical nyhuv, kho kom zoo nkauj, ib yam li cov ntaub ntawv silicon hauv thaj chaw Optics.
Nyob rau hauv cov nqe lus ntawm cov yam ntxwv kho qhov muag, cov khoom siv inp muaj qhov cuam tshuam loj tshaj plaws vim qhov nqus ntawm lub teeb nyob rau hauv feem ntau siv 1550nm band. Sio2 thiab silicon nitride muaj qhov zoo tshaj plaws kis cov yam ntxwv, thiab poob tuaj yeem mus txog qib ~ 0.01db / cm; Tam sim no, WaveGuide poob ntawm nyias-zaj duab xis lithium niholecture waveGuide muaj peev xwm txo qis txuas ntxiv nrog kev txhim kho txuas ntxiv ntawm cov thev naus laus zis hauv cov yav tom ntej. Yog li ntawd, cov yeeb yaj kiab nyias lithium niobate cov khoom yuav qhia tau zoo rau passive lub teeb ua ke xws li lub ntsej muag photoynthetic txoj kev, shunting thiab microring.
Nyob rau hauv cov nqe lus ntawm lub teeb tiam, tsuas yog inp muaj peev xwm emit teeb ncaj qha; Yog li ntawd, rau daim ntawv thov Microwave photon, nws yog qhov tsim nyog los qhia tus inp raws li lub lnoi as potonic sib txuas los ntawm txoj kev ntawm backload vuam lossis kev loj hlob tuaj. Nyob rau hauv cov nqe lus ntawm lub teeb kev hloov kho, nws tau hais txog saum toj no tias cov yeeb yaj kiab nyias muaj yooj yim kom ua tiav bandwidth thiab yoj ib nrab kis tau ploj dua li inp thiab si. Ntxiv mus, lub siab ntawm cov khoom siv hluav taws xob hluav taws xob ntawm nyias zaj duab xis lithium niobate cov ntaub ntawv yog qhov tseem ceeb rau txhua cov ntawv thov microwave.
Nyob rau hauv cov nqe lus ntawm optical routinging, lub siab ceev Electro-optical teb cov kev sib pauv hloov pauv, thiab kev siv hluav taws xob hloov kho qhov muag tshiab Rau cov ntawv thov raug ntawm Microwave Photon Technology, thiab cov yam ntxwv ntawm cov kev siv hluav taws xob nrawm nrawm tau zoo hloov kho kom loj -Scale pased array system. Txawm hais tias ATP raws li kev hloov kho kho qhov muag tau tuaj yeem paub cov suab nrov kho tshiab, nws yuav qhia tawm lub suab zoo Silicon, Sio2 thiab silies cov ntaub ntawv tsuas tuaj yeem hloov kho qhov kho qhov muag los ntawm cov nyhuv kho qhov muag lossis cov tsheb thauj khoom ntawm kev siv hluav taws xob siab thiab qeeb qeeb. Thaum cov array loj ntawm cov phased array yog loj, nws tsis tuaj yeem ua tau raws li cov kev xav tau ntawm kev siv fais fab.
Nyob rau hauv cov nqe lus ntawm optical amplification, tusSemiconductor Optical Amplifier (Soa) Raws li Inp tau raug paub tab rau kev lag luam, tab sis nws muaj cov suab nrov ntawm cov suab nrov siab thiab cov khoom tawm tsawg heev rau lub hnab ntawv microwave ntawm microwave photons. Cov txheej txheem ua kom zoo ntawm cov txheej txheem nyias-ua yeeb yaj kiab zoo nkauj
Nyob rau hauv cov nqe lus ntawm lub teeb kuaj pom, cov yeeb yaj kiab nyias lithium niobate muaj kev kis tus yam ntxwv zoo rau lub teeb hauv 1550 nm band. Txoj kev ua haujlwm ntawm kev hloov thev photheelecectric tsis tuaj yeem paub, yog li rau cov ntawv thov micron micron, txhawm rau kom tau raws li kev xav tau ntawm photo-concersion ntawm rab koob. Ingaas lossis GE-Si-si nrhiav cov chav qhia yuav tsum tau qhia nyob rau LNOi raws li cov duab photonic sib xyaw ua ke los ntawm backloading vuam lossis kev loj hlob tuaj. Nyob rau hauv cov nqe lus ntawm txuas nrog cov ntsuas hluav taws xob, vim tias lub fiber ntau tus kheej yog cov khoom sib txuam ntawm Sio2 Wave Square, thiab lub sib txuas yog qhov yooj yim tshaj plaws. Cov hom teb txoj kab ntawm cov yeeb yaj kiab nyias nyias lithium niobate yog li ntawm 1μm, uas yog qhov tsim nyog hloov chaw yuav tsum tau ua kom phim rau hom teb ntawm cov khoom siv kho tshiab.
Hais txog kev sib xyaw ua ke, seb ntau cov ntaub ntawv muaj ntau yam muaj peev xwm sib xyaw ua ke yog nyob ntawm kev txwv ntawm cov kev txwv uas yog kev txwv ntawm WaveGuide hom fireguide hom teb). Cov kev txwv tsis pub siv WaveGuide tso cai rau kev khoov dua me dua, uas yog qhov tseem ceeb dua rau kev paub txog kev sib koom siab siab. Yog li ntawd, nyias cov duab yees duab lithium niobate flutguides muaj lub peev xwm ua tiav kev sib koom siab siab. Yog li ntawd, cov tsos ntawm nyias zaj duab xis lithium niobate ua rau nws ua tau rau cov khoom siv lithium niobate khoom mus tiag tiag ua si lub luag haujlwm ntawm Optical "Silicon". Rau daim ntawv thov Microwave photing, qhov zoo ntawm nyias zaj duab xis lithium niobate muaj ntau pom tseeb.
Lub Sijhawm Post: Plaub-23-2024