Hom tshiab ntawm Terahertz muaj ntau cov ntaub ntawv muaj peev xwm thiab txhim kho 6g kev sib txuas lus nrog kev sib txuas lus tsis tau nrog cov ntaub ntawv tsis muaj txiaj ntsig.
Cov kws tshawb nrhiav tau tshaj tawm cov qhab-dav dav hlau loj tshaj plaws (Cov Duab: Cov duab tau txais)
Tom ntej-nplooj ntawv sib txuas lus ntawm lub wireless, sawv cev los ntawm Terahertz thev naus laus zis, cog lus kom hloov cov ntaub ntawv kis.
Cov qauv no ua haujlwm ntawm Terahertz zaus, muab cov ntaub ntawv tsis sib xws rau cov ntaub ntawv hloov tshiab thiab kev sib txuas lus. Txawm li cas los xij, kom paub tag nrho cov peev xwm no, muaj kev sib tw tseem ceeb yuav tsum tau kov yeej, tshwj xeeb hauv kev tswj hwm thiab siv cov spectrum muaj.
Lub chaw ua haujlwm loj hlob tau hais txog qhov kev sib tw no: thawj ultra-indra-bardband sib xyaw ua ke Terahertz Polarization (de) mult)
Qhov kev tsim qauv tshiab no lub hom phiaj sub-terahertz j band (220-330 ghz) thiab lub hom phiaj los hloov kev sib txuas lus rau 6g thiab dhau mus. Cov cuab yeej siv ob npaug cov ntaub ntawv muaj peev xwm thaum tswj cov ntaub ntawv poob qis, paving txoj kev kom muaj txiaj ntsig zoo thiab kev ntseeg siab wireless networks.
Pab neeg tom qab lub cim no suav nrog tus xibfwb nrog cov kws tshawb fawb hluav taws xob nrog OSaka University, thiab cov xibfwb Masayuki Fujita.
Xib fwb withayacchancus neeg tau hais tseg, "tus lej nkag rau ntau cov ntaub ntawv ntws los ua kom sib kis tau ib txhij nyob rau tib lub zaus, zoo ob npaug ntawm cov ntaub ntawv muaj peev xwm." Tus txheeb ze bandwidh ua tiav los ntawm cov cuab yeej tsis tau pom dua hla ntau zaus, sawv cev rau kev ua haujlwm tseem ceeb rau kev sib xyaw ua ke.
Kev sib txuas lus Polarization yog qhov tseem ceeb hauv kev sib txuas lus niaj hnub no raws li lawv muab cov cim ntau zaus los qhia txog qhov muaj peev xwm ntau zaus, ua kom haum rau cov peev xwm channel.
Cov cuab yeej tshiab ua tiav qhov no los ntawm kev siv cov kev qhia sib txuas lus conical thiab anisotropic tau zoo cladding. Cov cheebtsam no txhim kho polarization Birefringence, ua rau muaj kev sib piv siab ntev (ib) thiab tus cwj pwm dav dav ntawm kev sib txuas lus terahertz.
Tsis zoo li cov qauv tsim qauv uas cia siab rau cov nyom thiab zaus-muaj kev pab cuam Asymmetitides, tus tshiab multiplexer ntiav anisotropic cladding nrog tsuas yog ntu tsawg zaus. Qhov kev sib txuas no tau muaj kev sib zog nrog lub gruple bandwidth muab los ntawm conical couplers.
Qhov tshwm sim yog fraction bandwidth ze rau 40%, qhov nruab nrab ntawm ib qho dhau 20 db, thiab muaj qhov tsawg kawg nkaus poob ntawm kwv yees li 1 dB. Cov kev ua tau zoo ntawm cov kev ua haujlwm nyob deb tshaj cov kev tsim kho kho qhov muag thiab microwave tsim, uas feem ntau muaj kev txom nyem los ntawm nqaim bandwidth thiab poob siab.
Pab neeg tshawb fawb cov haujlwm tsis yog ua rau muaj kev ua tau zoo ntawm Terahertz tshuab tab sis tseem ua rau cov kev sib txuas lus tshiab rau lub sijhawm tshiab hauv wireless. Gao sau tseg, "Lub tswv yim no yog tus tsav tsheb tseem ceeb hauv kev xauv lub peev xwm ntawm Terahertz kev sib txuas lus." Cov ntawv thov suav nrog cov ntawv txhais cov ntsiab lus high-txhais video, augmented kev muaj tiag, thiab tom ntej-tiam xov tooj ntawm tes zoo li 6g.
Tsoos Terahertan Polarization Kev daws teeb meem, xws li Orthoogonal Hom Transducers (ingts) raws li cov hlau sib dhos, ntsib kev txwv. Cov kev tso tawm hlau tau nce ntau cov txheej txheem ntau dua, thiab lawv cov txheej txheem tsim khoom yog qhov nyuaj rau cov kev xav tau.
Kev siv kho qhov muag kho qhov muag, suav nrog cov uas siv mach -ing frystals lossis feem ntau yuav tsum tau muaj kev sib raug zoo tab sis feem ntau yuav tsum tau kev lag luam zoo ntawm bandwidth, compactness, thiab kev tsim khoom nyuaj.
Cov kev taw qhia sib txuas yog siv dav hauv kho qhov muag thiab yuav tsum tau muaj zog polarization birefringence kom ua tiav qhov loj me thiab qib siab. Txawm li cas los xij, lawv raug txwv los ntawm nqaim bandwidth thiab rhiab rau kev tsim kom muaj kev thev taus.
Tus tshiab multaker ua ke cov txiaj ntsig ntawm conical kev coj ua txuas nrog conical kev coj ua thiab ua tau zoo cladding, kov yeej cov kev txwv no. Lub anisotropic cladding cov khoom ua pov thawj tseem ceeb birefringence, kom muaj kev siab ib ncig ntawm cov bandwidth dav. Cov qauv kev tswj hwm lub ntsiab cai kos duab kos cim los ntawm cov txheej txheem ib txwm muaj, muab cov tshuaj thiab cov kev daws teeb meem Terahertz.
Kev sim ua pov thawj ntawm cov neeg muaj kev paub tseeb nws qhov kev ua tau zoo. Cov cuab yeej ua haujlwm tau zoo nyob rau hauv 225-330 GHz ntau, ua tiav ib qho fractional bandwidth ntawm 37.8% thaum tuav ib sab saum toj 20 db. Nws cov compact loj thiab sib xyaw nrog cov txheej txheem txheem tsim qauv ua nws haum rau huab hwm coj ntau lawm.
Dr. Gao tau hais txog, "Lub tswv yim no tsis yog ua rau muaj kev ua tau zoo ntawm Terahertz kev sib txuas lus zoo thiab txhim khu kev qha high-ceev wireless networks."
Cov ntawv thov yuav ntawm cov thev naus laus zis txuas dua dhau ntawm cov nruab kev sib txuas. Los ntawm kev txhim kho Spectrum siv, tus multiplexer tuaj yeem tsav nce qib hauv teb xws li radar, kev ua duab, thiab hauv internet ntawm yam. "Hauv kaum xyoo, peb cia siab tias cov Teerahertz thev naus laus zis los ua kom dav dav thiab ua ke hauv ntau yam lag luam," Xibhwb Withayacchanulation tau hais tseg.
Tus muaj ntau tus kuj tseem tuaj yeem sib xyaw ua ke nrog cov khoom siv ciav hlau ua ntej los ntawm pab pawg, ua kom tiav cov kev sib tham ua ke ntawm lub platform sib koom ua ke. Qhov kev sib xyaw no tau hais txog cov versatility thiab kev sib tw ntawm cov clad nruab nrab-clad dielectric WaveGuide platform.
Pab neeg cov lus pom kev tshawb fawb tau luam tawm nyob rau hauv phau ntawv Waser Laser & Protonic txheeb xyuas, hais txog lawv qhov tseem ceeb hauv kev tshaj lij ntawm PhotoTz thev naus laus zis. Professor Fujita tau hais txog, "los ntawm kev kov yeej cov kev txwv, qhov kev hloov tshiab no yuav tsum tau txhawb nqa cov kev cai thiab kev tshawb fawb hauv lub tshav pob."
Cov kws tshawb nrhiav tau xav tias lawv txoj haujlwm yuav nthuav tawm cov ntawv thov tshiab thiab kev txhim kho ntxiv hauv lub xyoo tom ntej, ua rau kev ua lag luam protootypes thiab cov khoom lag luam.
Qhov no muaj cov kauj ruam no sawv cev rau cov kauj ruam tseem ceeb hauv kev ntsuas lub peev xwm ntawm Terahertz kev sib txuas lus. Nws teeb tsa tus qauv tshiab rau kev sib xyaw Terahertz cov khoom siv nrog nws cov kev ntsuas ua tau zoo.
Raws li qhov kev thov kom muaj kev kub ceev, kev sib txuas lus siab sib txuas lus txuas ntxiv mus, xws li kev nrhav tuaj ua si lub luag haujlwm tseem ceeb hauv lub neej tom ntej ntawm wireless technology.
Lub Sijhawm Post: Dec-16-2024