Revolutionary silicon photodetector (Si photodetector)

Revolutionarysilicon photodetector(Si photodetector)

Revolutionary tag nrho-silicon photodetector (Yog photodetector), kev ua tau zoo tshaj qhov qub

Nrog rau qhov nyuaj ntxiv ntawm cov qauv kev txawj ntse txawj ntse thiab kev sib sib zog nqus neural tes hauj lwm, cov kev sib txuas ua ke muab kev xav tau ntau dua rau kev sib txuas lus network ntawm processors, nco thiab suav cov nodes. Txawm li cas los xij, ib txwm nyob rau hauv-chip thiab inter-chip tes hauj lwm raws li kev sib txuas hluav taws xob tsis tuaj yeem ua tau raws li qhov kev thov loj hlob rau bandwidth, latency thiab kev siv hluav taws xob. Yuav kom daws tau qhov bottleneck no, optical interconnection technology nrog nws ntev kis nrug, ceev ceev, siab zog efficiency zoo, maj mam ua kev cia siab rau yav tom ntej txoj kev loj hlob. Ntawm lawv, silicon photonic thev naus laus zis raws li CMOS txheej txheem qhia tau hais tias muaj peev xwm zoo vim nws qhov kev sib koom ua ke siab, tus nqi qis thiab kev ua haujlwm raug. Txawm li cas los xij, kev paub txog kev ua haujlwm siab photodetectors tseem ntsib ntau yam teeb meem. Feem ntau, photodetectors yuav tsum tau muab cov ntaub ntawv sib xyaw nrog qhov sib txawv ntawm qhov nqaim, xws li germanium (Ge), txhawm rau txhim kho kev tshawb pom, tab sis qhov no kuj ua rau cov txheej txheem tsim khoom ntau dua, cov nqi siab dua, thiab cov txiaj ntsig tsis zoo. Tag nrho-silicon photodetector tsim los ntawm pab pawg tshawb fawb tau ua tiav cov ntaub ntawv sib kis ceev ntawm 160 Gb / s ib channel yam tsis muaj kev siv germanium, nrog rau tag nrho cov kev sib kis bandwidth ntawm 1.28 Tb / s, los ntawm kev tsim kho dual-microring resonator tsim.

Tsis ntev los no, ib pab neeg tshawb fawb sib koom ua ke hauv Tebchaws Meskas tau tshaj tawm txoj kev tshawb fawb tshiab, tshaj tawm tias lawv tau ua tiav ib qho tag nrho-silicon avalanche photodiode (APD photodetector) chip. Cov nti no muaj ultra-siab ceev thiab tus nqi qis photoelectric interface muaj nuj nqi, uas xav kom ua tiav ntau dua 3.2 Tb ib ob cov ntaub ntawv hloov mus rau yav tom ntej optical tes hauj lwm.

Technical breakthrough: ob chav microring resonator tsim

Ib txwm photodetectors feem ntau muaj irreconcilable contradictions ntawm bandwidth thiab teb. Pab neeg tshawb fawb tau ua tiav qhov kev tsis sib haum xeeb no los ntawm kev siv ob-microring resonator tsim thiab muaj txiaj ntsig zoo tiv thaiv kev sib tham ntawm cov channel. Cov txiaj ntsig kev sim qhia tau hais tias covtag nrho-silicon photodetectormuaj cov lus teb ntawm 0.4 A / W, tsaus nti tam sim no tsawg li 1 nA, siab bandwidth ntawm 40 GHz, thiab hluav taws xob tsis tshua muaj hluav taws xob tsawg dua −50 dB. Qhov kev ua tau zoo no yog piv rau cov khoom lag luam tam sim no raws li cov khoom siv silicon-germanium thiab III-V.

Saib rau yav tom ntej: Txoj Kev mus rau kev tsim kho tshiab hauv kev sib txuas kho qhov muag

Txoj kev vam meej ntawm tag nrho cov-silicon photodetector tsis tsuas yog dhau qhov kev daws teeb meem hauv kev siv thev naus laus zis xwb, tab sis kuj ua tiav kev txuag ntawm kwv yees li 40% ntawm tus nqi, paving txoj hauv kev rau kev ua tiav ntawm high-speed, qis-nqi optical network yav tom ntej. Cov thev naus laus zis tau ua tiav nrog cov txheej txheem CMOS uas twb muaj lawm, muaj cov txiaj ntsig zoo thiab cov txiaj ntsig zoo, thiab xav tias yuav dhau los ua tus qauv hauv kev ua haujlwm ntawm silicon photonics thev naus laus zis yav tom ntej. Nyob rau hauv lub neej yav tom ntej, pab neeg tshawb fawb npaj yuav txuas ntxiv txhim kho tus qauv tsim los txhim kho tus nqi nqus thiab bandwidth kev ua tau zoo ntawm photodetector los ntawm kev txo cov doping concentrations thiab txhim kho kev cog qoob loo. Nyob rau tib lub sijhawm, kev tshawb fawb tseem yuav tshawb xyuas seb qhov no tag nrho-silicon thev naus laus zis tuaj yeem siv rau kev sib txuas kho qhov muag hauv AI tiam tom ntej pawg kom ua tiav bandwidth siab dua, kev ua kom muaj zog thiab kev siv hluav taws xob.