LPO: Kev Siv Hluav Taws Xob Kev Sib Tw rau Cov Chaw Cov Ntaub Ntawv, Pib Lub Sijhawm Tshiab ntawm Linear Optical Interconnection.
Niaj hnub no, nrog rau kev loj hlob tawg nyob rau hauv kev siv hluav taws xob xav tau ntawm kev txawj ntse txawj ntse, cov chaw zov me nyuam tau ntsib teeb meem kev siv hluav taws xob tsis tau pom dua. Kev siv lub zog ntawm DSP chips nyob rau hauv ib txwm muaj siab -kev ceev kho qhov muag modules tso nyiaj rau siab li 50%, uas tau dhau los ua ib qho tseem ceeb hauv lub hwj chim txwv qhov nce hauv kev siv hluav taws xob ceev. Txawm li cas los xij, ib qho kev siv thev naus laus zis hu ua Linear Drive Plug-In Optics (LPO) yog qhov tsim kho tshiab ntawm nws cov qauv tsim los qhib txoj hauv kev tshiab rau kev siv tau zoo thiab lub zog-txuag kev sib txuas kho qhov muag nyob rau tom ntej - cov chaw cov ntaub ntawv.
Lub tswv yim tseem ceeb ntawm LPO thev naus laus zis nyob hauv "ua kev rho tawm". Nws tshem tawm cov tub ntxhais lub zog- siv cov khoom siv hauv cov tsoos ntsaws- hauv cov khoom siv kho qhov muag - siab- ceev cov teeb liab digital processors (DSPs), thiab hloov lawv nrog cov kab sib txuas sib txuas ua ke. Qhov kev hloov no yuav zoo li yooj yim, tab sis nws embodies lub tswv yim zoo engineering. Hauv cov txheej txheem ib txwm muaj, DSPs ua cov teeb liab sib npaug sib npaug, lub sijhawm rov qab los, thiab kho qhov yuam kev, tab sis lawv kuj coj tau lub zog ntxiv txog li 4-5W. LPO kev daws teeb meem txhim kho cov qauv tsim, txhim kho cov qauv kev hloov pauv, thiab siv cov cuab yeej kho qhov yuam kev rau pem hauv ntej kom txo tau lub zog siv ntawm qhov tseem ceeb no kom tsawg dua 1W thaum ua kom lub teeb pom kev zoo, uas ua rau tag nrho cov qauv siv hluav taws xob txo mus txog 40%.
LPO thev naus laus zis tshwj xeeb yog tsim rau luv luv - nrug thiab siab - kev ua tau zoo ntawm kev suav. Hauv kev cob qhia kev txawj ntse, qhov kev sib txuas ntawm qhov muag pom ntawm cov servers feem ntau tsis tshaj 100 meters, tab sis yuav tsum muaj bandwidth siab heev ntawm 800G lossis 1.6T. Qhov no yog lub sijhawm zoo tshaj plaws rau LPO los ua kom pom nws qhov zoo - nws tsis tuaj yeem ua tau raws li cov kev xav tau ntawm kev xa xov hluav taws xob, tab sis kuj txo qis kev siv hluav taws xob thiab cov nqi hluav taws xob.
Tam sim no, ntau lub tuam txhab muab kev pabcuam huab tau sim thiab siv cov khoom siv kho qhov muag raws li LPO thev naus laus zis hauv lawv pawg AI server. Cov ntaub ntawv ua ntej qhia tau hais tias, nyob rau hauv tib lub ntsuas hluav taws xob, tag nrho lub zog siv ntawm pawg siv LPO daws tuaj yeem raug txo los ntawm 15-20%. Rau cov tuam txhab thev naus laus zis ua haujlwm cov chaw loj cov ntaub ntawv, qhov no txhais tau tias txuag tau ntau lab daus las hauv cov nqi hluav taws xob txhua xyoo. Txawm hais tias qhov kev cia siab tau zoo, LPO thev naus laus zis tseem ntsib cov teeb meem xws li teeb liab kev ncaj ncees thiab kev sib raug zoo. Txhawm rau daws cov teeb meem no, kev lag luam tau tsim ntau yam kev daws teeb meem tshiab: siv cov thev naus laus zis tshiab PAM4 los txhim kho spectral efficiency; ntxiv kev sib npaug ntawm kev them nyiaj ua haujlwm ntawm qhov hloov pauv thiab daim npav network sab; thiab txo cov teeb liab attenuation los ntawm cov txheej txheem ntim khoom siab heev. Cov kev ntsuas no ua ke ua kom muaj kev ruaj ntseg thiab kev ntseeg siab ntawm LPO system.
Nws yog ib nqi sau cia hais tias Tuam Tshoj optical kev sib txuas lus tuam txhab uas muag tau pom muaj zog technical peev xwm nyob rau hauv lub LPO teb. Ntau lub tuam txhab tau tso tawm 800G LPO cov khoom lag luam paub daws teeb meem thiab tau mus txog thoob ntiaj teb kev ua lag luam hauv cov cim tseem ceeb, muab kev daws teeb meem Suav rau lub ntiaj teb cov ntaub ntawv chaw zog-txuag kev hloov pauv. Raws li AI daim ntawv thov nkag mus rau ntau yam kev lag luam, qhov teeb meem siv hluav taws xob ntawm cov chaw zov me nyuam yuav dhau los ua qhov tseem ceeb. LPO thev naus laus zis, ua ke nrog txoj hauv kev tshiab xws li CPO (Co-packaged Optics) thiab silicon photonics, tsim cov qauv txheej txheem tshiab ntawm - tiam tshiab cov ntaub ntawv ntsuab. Hauv lub sijhawm tshiab ntawm kev ua kom muaj kev sib npaug ntawm kev suav lub zog thiab kev siv hluav taws xob, LPO thev naus laus zis tau txhaj tshuaj ntsuab rau hauv lub ntiaj teb digital kev lag luam thiab qhib lub hom phiaj tshiab - tshooj tshiab hauv kev tsim kho tshiab ntawm kev siv tshuab optical interconnection.