Kev Tshawb Fawb Kho Qhov Txuj Ci thiab Kev Txij Nkawm Rau On-Chip: Kev Ntsuam Xyuas

Kho qhov tshiab multiplexing thiab lawv sib yuav rau on-chip thiabKev Sib Txuas Lus Kho Qhov muag: kev txheeb xyuas

Cov kev qhia kho kho qhov tseeb kho qhov muag yog qhov kev tshawb fawb sai sai, thiab kws tshawb fawb thoob plaws ntiaj teb tau ua cov kev tshawb fawb hauv ntiaj teb no. Xyoo dhau los, ntau ntau cov thev naus laus zis xws li wavelength division multiplexing (PDM), Polarital Multipxing (PDM) thiab orham) Wavelength faib multiplexing (WDM) Technology Enables ob lossis ntau qhov kev ua haujlwm txawv ntawm ib lub fiber ntau, ua tag nrho cov yam ntxwv poob qis hauv cov wavelength loj. Txoj kev xav tau ua ntej tau thov los ntawm kev coj ncaj qha rau xyoo 1970, thiab nws tsis yog kom txog xyoo 1977 tias kev tshawb xyuas ntawm WDM thev naus laus zis ntawm kev thov kev sib txuas lus. Txij thaum ntawd los, nrog kev txhim kho txuas ntxiv ntawmKho Qhov Muag Fiber, Teeb Tau Qhov Teeb, photodetectorThiab lwm daim teb, cov neeg tau tshawb nrhiav WDM thev naus laus zis tseem tau nrawm dua. Qhov kom zoo dua ntawm kev ua polarization multiplexing (PDM) yog qhov ntau ntawm lub teeb liab ntawm lub teeb Ortej yog sib cais thiab kev txheeb xyuas ywj pheej ntawm lub tau kawg.

Raws li qhov kev thov rau cov ntaub ntawv siab dua cov ntaub ntawv txuas ntxiv kom loj hlob, qhov kawg ntawm kev ywj pheej ntawm kev kawm ntau, qhov chaw, tau hloov kho dua qub xyoo dhau los. Ntawm lawv, hom kev faib tawm multiplexing (MDM) yog feem ntau yog tsim los ntawm n transmitters, uas yog pom tau los ntawm cov hom spatial ntau. Thaum kawg, lub teeb liab txhawb nqa los ntawm hom spatial yog kis tau rau cov tsis muaj fiber ntau fiber ntau. Thaum hais txog kev sib tw teeb liab, txhua hom ntawm tib lub nthwv dej yog kho kom zoo li chaw sib faib ua ke, tsis muaj peev xwm ua tiav ib qho kev ua tiav. Hauv MDM, sib txawv spatial contours (uas yog, sib txawv ntawm cov qauv) ntawm cov qauv raug muab rau cov kev sib txawv. Piv txwv li, ib qho channel xa dhau ib lub nqaj laser uas zoo li yog ib daim duab peb sab, xwmfab, lossis voj voog. Cov duab siv los ntawm MDM hauv cov ntawv thov tiag tiag yog cov nyom thiab muaj cov yam ntxwv tshwj xeeb thiab lub cev. Cov thev naus laus zis no yog kev sib cav tshaj plaws ua kom tawg ntau hauv cov ntaub ntawv fiber ntau cov tshuaj sib kis tau tawm tsam txij li xyoo 1980s. MDM thev naus laus zis muab cov tswv yim tshiab los ua ntau cov qhab nia thiab nce ntxiv txuas tau siv ib qho yoj yoj. Orbital Angular Momentum (Oam) yog lub cev tus yam ntxwv ntawm lub tshuab hluav taws xob hluav taws xob hauv hluav taws xob tau txiav txim siab los ntawm kev sib tw theem. Txij li cov yeeb yam no tuaj yeem siv los tsim ntau txoj kev sib cais, wireless ebital agelively kev hloov pauv (xws li wireless backhaul lossis rau pem hauv ntej).