Ultra-wideband yatsopano ya 997GHz electro-optic modulator

Mtundu watsopano wa Ultra-wideband 997GHzelectro-optic modulator

Ultra-wideband electro-optic modulator yatsopano yakhazikitsa mbiri ya bandwidth ya 997GHz

Posachedwapa, gulu lofufuza ku Zurich, Switzerland, lapanga bwino makina opangira ma electro-optic modulator omwe amagwira ntchito pafupipafupi kuchokera ku 10 MHz mpaka 1.14 THz, ndikuyika 3 dB bandwidth record pa 997 GHz, yomwe ili kawiri mbiri yamakono. Kupambana kumeneku kumabwera chifukwa cha kukhathamiritsa kwa ma modulator a plasma, kutsegulira malo atsopano amtsogolo ma terahertz photonic integrated circuits (PICs).

Pakalipano, kulankhulana opanda zingwe makamaka kumadalira mafunde a ma microwave ndi ma millimeter, koma ma sipekitiramu azinthu zamagulu afupipafupiwa akhala akukhutitsidwa. Ngakhale kulumikizana kwa kuwala kuli ndi bandwidth yayikulu, sikungagwiritsidwe ntchito mwachindunji kufalitsa opanda zingwe pamalo aulere. Chifukwa chake, kulumikizana kwa THz kumawonedwa ngati "mlatho wagolide" wolumikiza maukonde opanda zingwe ndi fiber-optic, kupereka njira yabwino yothetsera 6G ndi njira zoyankhulirana zapamwamba kwambiri. Vuto liri ndikuti magwiridwe antchito a electro-optic modulators omwe alipo (mongaLiNbO₃ modulator, InGaAs, ndi zida za silicon) mu gulu la ma frequency a THz ndizokwanira. Chizindikiro chochepetsera chikuwonekera. Bandiwifi yogwira ntchito ndi pafupifupi 14 GHz ndipo mafupipafupi onyamulira ndi 100 GHz okha, omwe ali kutali ndi kukwaniritsa miyezo yofunikira pakulankhulana kwa THz. M'nkhaniyi, ofufuza apanga makina atsopano a plasma-based modulator, akuwonjezera bwino 3 dB bandwidth ku 997 GHz, yomwe ili kawiri mbiri yamakono, monga momwe tawonetsera pa Chithunzi 1. Kupambana kumeneku sikumangophwanya malire a matekinoloje achikhalidwe komanso kumakulitsa njira ya chitukuko chamtsogolo cha kulankhulana kwa THz!

Chithunzi 1 Plasma electro-optic modulator yokhala ndi THz bandwidth

Kupambana kwakukulu kwa mtundu watsopano wa modulator kuli muukadaulo wapamwamba wotchedwa "plasma effect". Tangoganizani kuti pamene kuwala kukuwalira pamwamba pa zitsulo nanostructure, izo resonates ndi ma elekitironi mu zakuthupi - ma elekitironi oscillate pamodzi lotengeka ndi kuwala, kupanga mtundu wapadera mafunde. Ndi kusinthasintha uku komwe kumapangitsa kutimodulatorkuwongolera ma siginecha owoneka bwino kwambiri. Zotsatira zoyeserera zikuwonetsa kuti moduliyo imawonetsa mawonekedwe abwino osinthira mkati mwa DC (mwachindunji) mpaka 1.14 THz ndipo imakhala ndi phindu lokhazikika pama frequency a 500 GHz mpaka 800 GHz.

Kuti aphunzire mozama momwe ma modulator amagwirira ntchito, gulu lofufuza lidapanga njira yofananira yofananira ndikuwunika momwe ma modulator amagwirira ntchito poyerekezera. Zotsatira zoyesera zimagwirizana bwino ndi chitsanzo chazongopeka, ndikutsimikiziranso momwe makinawo amagwirira ntchito komanso kukhazikika kwake. Kuonjezera apo, ochita kafukufuku apereka ndondomeko yowonjezera. Zikuyembekezeka kuti kudzera mu mapangidwe okhathamiritsa, kuchuluka kwa magwiridwe antchito a modulator iyi kumatha kupitilira 1THz mtsogolomo, ngakhale kufikira 2THz!

Kafukufukuyu akuwonetsa kuthekera kwakukulu kwa plasmaelectro-optic modulatorsmu THz kulankhulana ndi photonic Integrated circuits (PICs). Chipangizochi, chokhala ndi mawonekedwe a Ultra-wideband, kuchita bwino kwambiri komanso kuphatikizika, chimapereka njira yatsopano yosinthira ma siginolo a THz. M'tsogolomu, ndi kukhathamiritsa kwina kwa mapangidwe a chipangizo ndi njira zopangira, maulendo ogwiritsira ntchito ma modulator a plasma akuyembekezeka kupitirira 2 THz, kukwaniritsa kuchuluka kwa deta komanso kufalikira kwakukulu. Kubwera kwa nthawi ya THz sikumangotanthauza kutumizirana mwachangu kwa data komanso kuthekera kozindikira bwino, komanso kudzalimbikitsa kusakanikirana kozama kwa magawo angapo monga kulumikizana opanda zingwe, ma computing optical, ndi kuzindikira mwanzeru. Kupambana kwa plasma electro-optic modulators kungakhale sitepe yofunika kwambiri yotsogolera chitukuko cha teknoloji ya THz, ndikupereka maziko a kulumikizana kwachangu kwa gulu lazidziwitso zamtsogolo.