Eo modulatorSeries: Kev kub ceev, qis voltage, me me lithium niobate nyias zaj duab xis polarization tswj ntaus ntawv
Cov nthwv dej teeb nyob rau hauv qhov chaw dawb (nrog rau cov nthwv dej electromagnetic ntawm lwm cov zaus) yog cov nthwv dej shear, thiab qhov kev taw qhia ntawm kev co ntawm nws cov hluav taws xob thiab cov teb sib nqus muaj ntau yam kev taw qhia hauv qhov seem hla perpendicular rau qhov kev taw qhia ntawm kev nthuav dav, uas yog lub zog polarization ntawm lub teeb. Polarization muaj txiaj ntsig tseem ceeb rau kev siv hauv kev sib txuas lus optical, kev tshawb pom kev lag luam, biomedicine, kev tshawb pom deb ntawm lub ntiaj teb, tub rog niaj hnub, aviation thiab dej hiav txwv.
Hauv xwm, txhawm rau kom taug kev tau zoo dua, ntau yam tsiaj txhu tau tsim cov kab ke pom kev uas tuaj yeem paub qhov sib txawv ntawm lub teeb. Piv txwv li, muv muaj tsib lub qhov muag (peb lub qhov muag ib leeg, ob lub qhov muag sib xyaw), txhua lub muaj 6,300 lub qhov muag me me, uas pab cov muv kom tau txais daim ntawv qhia ntawm lub teeb polarization hauv txhua qhov kev taw qhia hauv ntuj. Tus muv tuaj yeem siv daim ntawv qhia polarization los nrhiav thiab coj nws cov tsiaj mus rau cov paj uas nws pom. Tib neeg tsis muaj cov kab mob zoo ib yam li muv los hnov lub teeb polarization, thiab yuav tsum siv cov khoom siv dag los hnov thiab tswj lub teeb polarization. Ib qho piv txwv ib txwm yog kev siv cov tsom iav polarizing los coj lub teeb los ntawm cov duab sib txawv mus rau sab laug thiab sab xis qhov muag hauv perpendicular polarizations, uas yog lub hauv paus ntsiab lus ntawm 3D movies hauv xinesmas.
Kev tsim cov khoom siv tswj kev ua haujlwm siab ntawm optical polarization yog qhov tseem ceeb rau kev tsim cov thev naus laus zis siv lub teeb polarized. Cov khoom siv tswj kev ua haujlwm polarization feem ntau suav nrog polarization state generator, scrambler, polarization analyzer, polarization controller, thiab lwm yam. Nyob rau xyoo tas los no, cov thev naus laus zis tswj kev ua haujlwm polarization optical tau ua kom nrawm dua thiab sib koom ua ke rau ntau qhov chaw tshiab uas muaj txiaj ntsig zoo.
Nojkev sib txuas lus pom kevua piv txwv, tsav los ntawm qhov kev thov rau kev xa cov ntaub ntawv loj heev hauv cov chaw khaws ntaub ntawv, kev sib raug zoo ntevkho qhov muagCov thev naus laus zis sib txuas lus maj mam nthuav dav mus rau cov ntawv thov sib txuas luv luv uas muaj kev nkag siab zoo rau tus nqi thiab kev siv hluav taws xob, thiab kev siv cov thev naus laus zis tswj hwm polarization tuaj yeem txo qhov nqi thiab kev siv hluav taws xob ntawm cov kab ke sib txuas lus luv luv. Txawm li cas los xij, tam sim no, kev tswj hwm polarization feem ntau yog ua tiav los ntawm cov khoom siv optical discrete, uas txwv tsis pub txhim kho kev ua tau zoo thiab txo tus nqi. Nrog rau kev txhim kho sai ntawm cov thev naus laus zis sib koom ua ke optoelectronic, kev sib koom ua ke thiab chip yog cov qauv tseem ceeb hauv kev txhim kho yav tom ntej ntawm cov khoom siv tswj hwm polarization optical.
Txawm li cas los xij, cov optical waveguides uas tau npaj ua cov lithium niobate crystals ib txwm muaj qhov tsis zoo ntawm qhov sib piv ntawm cov refractive index me me thiab qhov tsis muaj zog ntawm qhov chaw optical field binding. Ntawm ib sab tes, qhov loj ntawm lub cuab yeej loj, thiab nws nyuaj rau ua kom tau raws li qhov xav tau ntawm kev sib koom ua ke. Ntawm qhov tod tes, qhov kev sib cuam tshuam electrooptical tsis muaj zog, thiab qhov hluav taws xob tsav ntawm lub cuab yeej siab.
Nyob rau hauv xyoo tas los no,cov khoom siv photonicraws li cov ntaub ntawv zaj duab xis nyias lithium niobate tau ua tiav keeb kwm, ua tiav qhov ceev dua thiab qis dua qhov hluav taws xob tsav tsheb dua li cov khoom ib txwm muaj.cov khoom siv photonic lithium niobate, yog li lawv tau txais kev nyiam los ntawm kev lag luam. Hauv kev tshawb fawb tsis ntev los no, cov chip tswj kev sib xyaw ua ke ntawm lub teeb pom kev zoo tau pom tseeb ntawm lub lithium niobate nyias zaj duab xis photonic kev koom ua ke platform, suav nrog polarization generator, scrambler, polarization analyzer, polarization maub los thiab lwm yam haujlwm tseem ceeb. Cov kev cai tseem ceeb ntawm cov chips no, xws li polarization generation speed, polarization extinction ratio, polarization perturbation speed, thiab kev ntsuas ceev, tau teeb tsa cov ntaub ntawv tshiab hauv ntiaj teb, thiab tau qhia txog kev ua tau zoo heev hauv kev kub ceev, tus nqi qis, tsis muaj parasitic modulation poob, thiab qis tsav voltage. Cov txiaj ntsig tshawb fawb thawj zaug paub txog ntau yam kev ua tau zoolithium niobatecov khoom siv tswj kev sib hloov polarization ntawm zaj duab xis nyias nyias, uas muaj ob lub hauv paus tseem ceeb: 1. Kev sib hloov polarization / splitter, 2. Mach-zindel interferometer (kev piav qhia >), raws li pom hauv Daim Duab 1.
Lub sijhawm tshaj tawm: Lub Kaum Ob Hlis-26-2023