Nyob rau hauv xyoo tas los no, cov kws tshawb fawb los ntawm ntau lub teb chaws tau siv kev sib koom ua ke ntawm photonics kom paub txog kev tswj hwm ntawm infrared lub teeb nthwv dej thiab siv lawv rau 5G kev sib txuas ceev ceev, nti sensors, thiab tsheb autonomous. Tam sim no, nrog kev txuas ntxiv mus txuas ntxiv ntawm cov kev tshawb fawb no, cov kws tshawb fawb tau pib ua qhov kev tshawb pom qhov pom ntawm lub teeb pom kev luv luv thiab tsim cov kev siv ntau dua, xws li nti-qib LIDAR, AR / VR / MR (txhim kho / virtual / hybrid) Kev muaj tiag) tsom iav, holographic qhia, quantum processing chips, optogenetic probes implanted nyob rau hauv lub hlwb, thiab lwm yam.
Qhov loj-scale kev koom ua ke ntawm optical theem modulators yog lub hauv paus ntawm optical subsystem rau on-chip optical routing thiab free-space wavefront shaping. Ob txoj haujlwm tseem ceeb no yog qhov tseem ceeb rau kev ua tiav ntawm ntau yam kev siv. Txawm li cas los xij, rau qhov kho qhov muag theem modulators hauv qhov pom lub teeb pom kev, nws yog qhov nyuaj tshwj xeeb kom ua tau raws li qhov xav tau ntawm kev xa tawm siab thiab kev hloov pauv siab tib lub sijhawm. Yuav kom ua tau raws li qhov yuav tsum tau ua, txawm tias cov khoom siv silicon nitride thiab lithium niobate zoo tshaj plaws yuav tsum tau ua kom lub ntim thiab lub zog noj.
Txhawm rau daws qhov teeb meem no, Michal Lipson thiab Nanfang Yu ntawm Columbia University tau tsim lub tshuab hluav taws xob silicon nitride thermo-optic theem modulator raws li adiabatic micro-ring resonator. Lawv tau ua pov thawj tias micro-ring resonator ua haujlwm hauv lub xeev muaj zog sib txuas. Cov cuab yeej tuaj yeem ua tiav theem kev hloov pauv nrog qhov tsawg kawg nkaus poob. Piv nrog rau cov waveguide theem modulators zoo tib yam, cov cuab yeej muaj tsawg kawg yog ib qho kev txiav txim ntawm qhov loj me ntawm qhov chaw thiab lub zog noj. Cov ntsiab lus cuam tshuam tau luam tawm hauv Nature Photonics.
Michal Lipson, tus kws tshaj lij hauv kev sib koom ua ke ntawm photonics, raws li silicon nitride, hais tias: "Tus yuam sij rau peb txoj kev daws teeb meem yog siv lub optical resonator thiab ua haujlwm hauv lub xeev hu ua kev sib txuas muaj zog."
Lub optical resonator yog cov qauv zoo sib xws, uas tuaj yeem hloov pauv qhov me me refractive index hloov mus rau theem hloov los ntawm ntau lub voj voog ntawm cov kab teeb. Feem ntau, nws tuaj yeem muab faib ua peb txoj haujlwm sib txawv: "hauv qab sib txuas" thiab "hauv qab sib txuas." Kev sib txuas tseem ceeb" thiab "muaj zog sib txuas." Ntawm lawv, "nyob rau hauv kev sib txuas" tsuas yog muab cov kev hloov pauv theem qis thiab yuav qhia cov kev hloov pauv tsis tsim nyog, thiab "kev sib txuas tseem ceeb" yuav ua rau poob qhov muag pom, yog li cuam tshuam rau qhov ua tau zoo ntawm lub cuab yeej.
Txhawm rau ua kom tiav 2π theem kev hloov pauv thiab qhov hloov pauv me me, pab pawg tshawb fawb tau tswj hwm lub microring hauv lub xeev "muaj zog sib txuas". Lub zog sib txuas ntawm microring thiab "bus" yog tsawg kawg yog kaum npaug siab dua qhov poob ntawm microring. Tom qab ib tug series ntawm designs thiab optimization, lub kawg qauv yog qhia nyob rau hauv daim duab hauv qab no. Qhov no yog ib lub nplhaib resonant nrog tapered dav. Qhov nqaim waveguide txhim kho qhov kho qhov muag txuas lub zog ntawm "bus" thiab micro-coil. Qhov dav waveguide ib feem Lub teeb poob ntawm lub microring yog txo los ntawm kev txo cov optical scattering ntawm sidewall.
Heqing Huang, thawj tus kws sau ntawv, kuj tau hais tias: "Peb tau tsim ib qho me me, txuag hluav taws xob, thiab tsis tshua pom kev pom lub teeb pom kev zoo nrog lub vojvoog ntawm 5 μm thiab π-theem hloov hluav taws xob siv hluav taws xob nkaus xwb. 0,8m wb. Qhov kev nthuav qhia amplitude variation yog tsawg dua 10%. Dab tsi yog qhov tsis tshua muaj yog tias qhov kev hloov kho no sib npaug zoo rau qhov nyuaj tshaj plaws xiav thiab ntsuab bands hauv qhov pom spectrum. "
Nanfang Yu kuj tau taw qhia tias txawm hais tias lawv nyob deb ntawm kev sib koom ua ke ntawm cov khoom siv hluav taws xob, lawv txoj haujlwm tau txo qis qhov sib txawv ntawm photonic keyboards thiab hluav taws xob keyboards. "Yog hais tias yav dhau los modulator thev naus laus zis tsuas yog tso cai rau kev sib koom ua ke ntawm 100 waveguide theem modulators muab qee cov nti hneev taw thiab lub zog siv nyiaj, ces tam sim no peb tuaj yeem koom ua ke 10,000 theem hloov pauv ntawm tib lub nti kom ua tiav ntau txoj haujlwm. "
Nyob rau hauv luv luv, txoj kev tsim no yuav siv tau rau electro-optic modulators kom txo tau qhov chaw nyob thiab voltage noj. Nws kuj tuaj yeem siv rau hauv lwm qhov spectral ntau thiab lwm qhov sib txawv resonator tsim. Tam sim no, pab pawg tshawb fawb tau koom tes los ua kom pom qhov pom spectrum LIDAR tsim los ntawm theem hloov pauv arrays raws li cov microrings. Nyob rau hauv lub neej yav tom ntej, nws tseem tuaj yeem siv rau ntau daim ntawv thov xws li kho qhov muag tsis pom kev, lasers tshiab, thiab quantum optics tshiab.
Qhov twg los: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
Beijing Rofea Optoelectronics Co., Ltd. nyob rau hauv Tuam Tshoj lub "Silicon Valley" - Beijing Zhongguancun, yog ib tug high-tech enterprise mob siab rau ua hauj lwm nyob rau hauv lub domestic thiab txawv teb chaws kev tshawb fawb cov koom haum, kev tshawb fawb institutes, universities thiab enterprise scientific kev tshawb fawb neeg ua hauj lwm. Peb lub tuam txhab feem ntau yog koom nrog kev tshawb fawb ywj pheej thiab kev tsim kho, tsim, tsim khoom, muag khoom ntawm optoelectronic cov khoom, thiab muab cov kev daws teeb meem tshiab thiab kev tshaj lij, kev pabcuam tus kheej rau cov kws tshawb fawb tshawb fawb thiab cov kws tshaj lij. Tom qab xyoo ntawm kev ywj pheej innovation, nws tau tsim ib tug nplua nuj thiab zoo meej series ntawm photoelectric khoom, uas yog dav siv nyob rau hauv lub nroog, tub rog, tsheb thauj mus los, hluav taws xob fais fab, nyiaj txiag, kev kawm, kev kho mob thiab lwm yam lag luam.
Peb tab tom tos ntsoov rau kev koom tes nrog koj!
Post lub sij hawm: Mar-29-2023