Lub luag haujlwm ntawm zaj duab xis nyias ntawm lithium niobate hauv electro-optic modulator

Lub luag haujlwm ntawm zaj duab xis nyias ntawm lithium niobate hauvelectro-optic modulator
Txij thaum pib ntawm kev lag luam mus txog rau tam sim no, lub peev xwm ntawm kev sib txuas lus ib leeg tau nce ntau lab npaug, thiab qee qhov kev tshawb fawb me me tau tshaj kaum lab npaug. Lithium niobate tau ua lub luag haujlwm tseem ceeb hauv nruab nrab ntawm peb txoj kev lag luam. Thaum ntxov ntawm kev sib txuas lus fiber ntau, kev hloov kho ntawm lub teeb liab kho qhov muag tau hloov kho ncaj qha rau ntawmlaser. Hom kev hloov kho no siv tau rau hauv cov ntawv thov bandwidth qis lossis luv luv. Rau kev hloov kho ceev ceev thiab cov ntawv thov ntev, yuav muaj bandwidth tsis txaus thiab cov channel kis tau kim heev kom tau raws li cov ntawv thov ntev.
Nyob nruab nrab ntawm kev sib txuas lus fiber ntau, qhov kev hloov kho teeb liab sai dua thiab sai dua kom tau raws li qhov nce ntawm kev sib txuas lus muaj peev xwm, thiab hom kev hloov kho teeb liab pib sib cais, thiab ntau hom kev hloov kho tau siv rau hauv kev sib txuas lus luv luv thiab kev sib txuas lus ntev. Kev hloov kho ncaj qha pheej yig siv rau hauv kev sib txuas lus luv luv, thiab "electro-optic modulator" sib cais siv rau hauv kev sib txuas lus ntev, uas tau sib cais los ntawm laser.
Electro-optic modulator siv Machzender cuam tshuam qauv los modulate lub teeb liab, lub teeb yog electromagnetic nthwv dej, electromagnetic nthwv dej ruaj khov cuam tshuam xav tau kev tswj hwm zaus ruaj khov, theem thiab polarization. Peb feem ntau hais ib lo lus, hu ua cuam tshuam fringes, lub teeb thiab tsaus fringes, kaj yog thaj chaw uas cuam tshuam electromagnetic yog txhim kho, tsaus yog thaj chaw uas cuam tshuam electromagnetic ua rau lub zog tsis muaj zog. Mahzender cuam tshuam yog ib hom interferometer nrog cov qauv tshwj xeeb, uas yog cov nyhuv cuam tshuam tswj los ntawm kev tswj hwm theem ntawm tib lub beam tom qab faib lub beam. Hauv lwm lo lus, qhov cuam tshuam tshwm sim tuaj yeem tswj hwm los ntawm kev tswj hwm theem cuam tshuam.
Lithium niobate cov khoom no yog siv rau hauv kev sib txuas lus fiber ntau, uas yog, nws tuaj yeem siv qib voltage (lub teeb liab hluav taws xob) los tswj lub teeb theem, kom ua tiav qhov kev hloov pauv ntawm lub teeb liab, uas yog kev sib raug zoo ntawm electro-optical modulator thiab lithium niobate. Peb lub modulator hu ua electro-optic modulator, uas yuav tsum xav txog ob qho tib si kev ncaj ncees ntawm lub teeb liab hluav taws xob thiab qhov zoo ntawm lub teeb liab optical. Lub peev xwm teeb liab hluav taws xob ntawm indium phosphide thiab silicon photonics zoo dua li ntawm lithium niobate, thiab lub peev xwm teeb liab optical me ntsis qaug zog tab sis kuj siv tau, uas tsim txoj hauv kev tshiab los ntes lub sijhawm ua lag luam.
Ntxiv rau lawv cov khoom siv hluav taws xob zoo heev, indium phosphide thiab silicon photonics muaj qhov zoo ntawm miniaturization thiab kev koom ua ke uas lithium niobate tsis muaj. Indium phosphide me dua li lithium niobate thiab muaj qib kev koom ua ke siab dua, thiab silicon photons me dua li indium phosphide thiab muaj qib kev koom ua ke siab dua. Lub taub hau ntawm lithium niobate ua ibtus neeg hloov khontev li ob npaug ntawm indium phosphide, thiab nws tsuas yog ua tau ib qho modulator thiab tsis tuaj yeem koom ua ke lwm yam haujlwm.
Tam sim no, lub electro-optical modulator tau nkag mus rau lub sijhawm ntawm 100 billion cim tus nqi, (128G yog 128 billion), thiab lithium niobate tau rov qab muab tso rau hauv kev sib ntaus sib tua los koom nrog kev sib tw, thiab vam tias yuav ua tus thawj coj hauv lub sijhawm no yav tom ntej, ua tus thawj coj hauv kev nkag mus rau hauv kev lag luam 250 billion cim tus nqi. Rau lithium niobate kom rov qab tau lub khw no, nws yog qhov tsim nyog los tshuaj xyuas seb indium phosphide thiab silicon photons muaj dab tsi, tab sis lithium niobate tsis muaj. Qhov ntawd yog lub peev xwm hluav taws xob, kev sib koom ua ke siab, miniaturization.
Qhov kev hloov pauv ntawm lithium niobate muaj peb lub kaum sab xis, thawj lub kaum sab xis yog yuav ua li cas txhim kho lub peev xwm hluav taws xob, lub kaum sab xis thib ob yog yuav ua li cas txhim kho kev koom ua ke, thiab lub kaum sab xis thib peb yog yuav ua li cas miniaturize. Kev daws teeb meem rau peb lub kaum sab xis no tsuas yog xav tau ib qho kev ua, uas yog, kom nyias zaj duab xis cov khoom lithium niobate, tshem tawm ib txheej nyias heev ntawm cov khoom lithium niobate ua lub waveguide optical, koj tuaj yeem tsim dua lub electrode, txhim kho lub peev xwm hluav taws xob, txhim kho bandwidth thiab modulation efficiency ntawm lub teeb liab hluav taws xob. Txhim kho lub peev xwm hluav taws xob. Zaj duab xis no kuj tseem tuaj yeem txuas rau silicon wafer, kom ua tiav kev sib xyaw ua ke, lithium niobate ua tus modulator, tus so ntawm silicon photon kev koom ua ke, silicon photon miniaturization muaj peev xwm yog qhov pom tseeb rau txhua tus, lithium niobate zaj duab xis thiab silicon lub teeb sib xyaw ua ke, txhim kho kev koom ua ke, ua tiav miniaturization ntuj.
Nyob rau yav tom ntej ze, lub tshuab hluav taws xob-kho qhov muag modulator yuav nkag mus rau lub sijhawm ntawm 200 billion cim tus nqi, qhov tsis zoo ntawm qhov muag ntawm indium phosphide thiab silicon photons tau pom tseeb dua, thiab qhov zoo ntawm qhov muag ntawm lithium niobate tau pom tseeb dua, thiab cov zaj duab xis nyias lithium niobate txhim kho qhov tsis zoo ntawm cov khoom siv no ua tus modulator, thiab kev lag luam tsom mus rau qhov "zaj duab xis nyias lithium niobate", uas yog, zaj duab xis nyiaslithium niobate modulatorQhov no yog lub luag haujlwm ntawm cov zaj duab xis nyias lithium niobate hauv thaj teb ntawm electro-optical modulators.