Lub luag hauj lwm ntawm nyias zaj duab xis ntawm lithium niobate nyob rau hauvelectro-optic modulator
Txij li thaum pib ntawm kev lag luam mus rau tam sim no, lub peev xwm ntawm ib leeg-fiber kev sib txuas lus tau nce los ntawm ntau lab lub sij hawm, thiab ib tug me me ntawm kev tshawb fawb txiav-ntug tau tshaj kaum tawm lab lub sij hawm. Lithium niobate tau ua lub luag haujlwm zoo hauv nruab nrab ntawm peb txoj kev lag luam. Nyob rau hauv thaum ntxov hnub ntawm optical fiber kev sib txuas lus, lub modulation ntawm lub optical teeb liab tau ncaj qha tuned rau ntawm lublaser. Hom kev hloov kho no yog siv tau hauv kev siv bandwidth tsawg lossis luv luv. Rau kev hloov pauv siab ceev thiab kev siv ntev ntev, yuav muaj qhov bandwidth tsis txaus thiab cov kab sib kis tau kim dhau los ua kom tau raws li cov ntawv thov nyob deb.
Nyob rau hauv nruab nrab ntawm kev sib txuas lus fiber ntau optical, lub teeb liab modulation yog sai thiab ceev kom tau raws li qhov nce ntawm kev sib txuas lus muaj peev xwm, thiab optical teeb liab modulation hom pib sib cais, thiab txawv modulation hom yog siv nyob rau hauv luv luv-nyob deb networking thiab ntev-ntev pob tw networking. . Tus nqi qis ncaj qha kev hloov pauv yog siv nyob rau hauv kev sib txuas luv luv, thiab ib qho "electro-optic modulator" yog siv nyob rau hauv kev sib txuas ntawm lub cev ntev, uas yog cais los ntawm lub laser.
Electro-optic modulator siv Machzender cuam tshuam cov qauv los hloov cov teeb liab, lub teeb yog electromagnetic yoj, electromagnetic yoj ruaj khov cuam tshuam xav tau kev tswj xyuas ruaj khov, theem thiab polarization. Peb feem ntau hais ib lo lus, hu ua cuam tshuam fringes, lub teeb thiab tsaus fringes, kaj yog qhov chaw uas electromagnetic cuam tshuam, tsaus yog qhov chaw uas electromagnetic cuam tshuam ua rau lub zog tsis muaj zog. Mahzender cuam tshuam yog ib hom interferometer nrog cov qauv tshwj xeeb, uas yog qhov cuam tshuam cuam tshuam los ntawm kev tswj cov theem ntawm tib kab teeb tom qab sib cais cov nqaj. Hauv lwm lo lus, qhov cuam tshuam cuam tshuam tuaj yeem tswj tau los ntawm kev tswj cov theem cuam tshuam.
Lithium niobate cov khoom siv no yog siv rau hauv kev sib txuas lus fiber ntau optical, uas yog, nws tuaj yeem siv qib voltage (hluav taws xob teeb liab) los tswj cov theem ntawm lub teeb, kom ua tiav cov kev hloov kho ntawm lub teeb liab, uas yog kev sib raug zoo ntawm electro-optical. Modulator thiab lithium niobate. Peb lub modulator yog hu ua electro-optic modulator, uas yuav tsum tau xav txog ob qho tib si kev ncaj ncees ntawm cov hluav taws xob teeb liab thiab cov modulation zoo ntawm cov teeb liab optical. Cov teeb liab hluav taws xob muaj peev xwm ntawm indium phosphide thiab silicon photonics yog qhov zoo dua li ntawm lithium niobate, thiab lub peev xwm kho qhov muag tsis muaj zog me ntsis tab sis kuj tuaj yeem siv tau, uas tsim txoj hauv kev tshiab los txeeb lub sijhawm ua lag luam.
Ntxiv nrog 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 yog me dua lithium niobate thiab muaj kev sib koom ua ke ntau dua, thiab silicon photons me dua indium phosphide thiab muaj kev sib koom ua ke ntau dua. Lub taub hau ntawm lithium niobate li amodulatoryog ob zaug ntev li indium phosphide, thiab nws tsuas tuaj yeem ua tus modulator thiab tsis tuaj yeem koom ua 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 ua dua rau kev sib ntaus sib tua los koom nrog kev sib tw, thiab cia siab tias yuav coj lub sijhawm no nyob ze. yav tom ntej, coj tus thawj coj hauv kev nkag mus rau 250 billion cim tus nqi lag luam. Rau lithium niobate kom rov qab tau lub lag luam no, nws yog ib qho tsim nyog los tshuaj xyuas qhov indium phosphide thiab silicon photons muaj, tab sis lithium niobate tsis. Qhov ntawd yog hluav taws xob muaj peev xwm, kev sib koom ua ke siab, miniaturization.
Qhov kev hloov ntawm lithium niobate nyob rau hauv peb lub kaum sab xis, thawj lub kaum sab xis yog yuav ua li cas los txhim kho hluav taws xob muaj peev xwm, lub kaum sab xis thib ob yog yuav ua li cas txhim kho kev sib koom ua ke, thiab lub kaum sab xis thib peb yog yuav ua li cas rau miniaturize. Kev daws rau peb lub kaum sab xis no tsuas yog yuav tsum ua ib qho nkaus xwb, uas yog, kom nyias zaj duab xis cov khoom siv lithium niobate, tshem tawm cov txheej nyias nyias ntawm lithium niobate cov ntaub ntawv raws li kev kho qhov muag waveguide, koj tuaj yeem rov tsim cov electrode, txhim kho hluav taws xob, txhim kho. lub bandwidth thiab modulation efficiency ntawm hluav taws xob teeb liab. Txhim kho hluav taws xob muaj peev xwm. Cov yeeb yaj kiab no 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 pom tseeb rau txhua tus, lithium niobate zaj duab xis thiab silicon lub teeb sib xyaw ua ke, txhim kho kev koom ua ke. , ib txwm ua tiav miniaturization.
Nyob rau hauv lub neej yav tom ntej, lub electro-optical modulator tab tom yuav nkag mus rau lub sijhawm ntawm 200 billion cim tus nqi, qhov tsis zoo ntawm indium phosphide thiab silicon photons tau dhau los ua pom tseeb, thiab qhov zoo ntawm lithium niobate tau dhau los ua ntau dua. tseem ceeb, thiab cov lithium niobate nyias zaj duab xis txhim kho qhov tsis zoo ntawm cov khoom siv no raws li kev hloov pauv, thiab kev lag luam tsom rau qhov "thin film lithium. niobate”, uas yog, nyias zaj duab xisLithium niobate modulator. Qhov no yog lub luag hauj lwm ntawm nyias zaj duab xis lithium niobate nyob rau hauv lub teb ntawm electro-optical modulators.
Post lub sij hawm: Oct-22-2024