Sabon ultra-wideband 997GHzelectrooptic modulator
Wani sabon ultra-wideband electro-optic modulator ya kafa rikodin bandwidth na 997GHz
Kwanan nan, wata ƙungiyar bincike a Zurich, Switzerland, ta sami nasarar ƙera na'ura mai ba da hanya tsakanin hanyoyin sadarwa na lantarki wanda ke aiki a mitoci daga 10 MHz zuwa 1.14 THH, suna saita rikodin bandwidth na 3 dB a 997 GHz, wanda shine sau biyu rikodin na yanzu. Wannan ci gaban ana danganta shi da ingantacciyar ƙira na masu canza plasma, buɗe sabon sarari don terahertz photonic hadedde circuits (PICs).
A halin yanzu, sadarwa mara waya ta dogara ne akan microwaves da raƙuman ruwa na millimita, amma albarkatun bakan na waɗannan maɗaurin mitar sun yi ƙoƙarin zama cikakke. Kodayake sadarwar gani tana da babban bandwidth, ba za a iya amfani da ita kai tsaye don watsa mara waya ba a cikin sarari kyauta. Saboda haka, ana ɗaukar sadarwar THz a matsayin "gadar zinare" da ke haɗa hanyoyin sadarwa mara waya da fiber-optic, samar da mafita mai kyau ga 6G da tsarin sadarwa mafi girma. Matsalar ta ta'allaka ne a cikin cewa aikin na'urori masu daidaitawa na lantarki (kamarLiNbO₃ modulator, InGaAs, da kayan tushen silicon) a cikin rukunin mitar THz bai isa ba. Rage siginar a bayyane yake. bandwidth mai aiki kusan 14 GHz ne kawai kuma matsakaicin mitar mai ɗaukar nauyi shine 100 GHz kawai, wanda yayi nisa daga cika ƙa'idodin da ake buƙata don sadarwar THz. A cikin wannan labarin, masu bincike sun ƙera wani sabon na'ura mai daidaitawa na plasma, wanda ya sami nasarar haɓaka bandwidth na 3 dB zuwa 997 GHz, wanda shine sau biyu rikodin na yanzu, kamar yadda aka nuna a cikin Hoto 1. Wannan ci gaba ba wai kawai ya karya iyakokin fasahar gargajiya ba amma yana fadada hanyar da za a ci gaba da bunkasa sadarwar THz a nan gaba!
Hoto 1 Plasma electro-optic modulator tare da bandwidth na THZ
Babban ci gaban wannan sabon nau'in modulator ya ta'allaka ne a cikin babbar fasahar da ake kira "plasma effect". Ka yi tunanin cewa lokacin da haske ya haskaka saman wani ƙarfe na nanostructure, ya sake yin resonates da electrons a cikin kayan - electrons suna yin oscillate tare da hasken, suna samar da nau'i na musamman. Daidai wannan canji ne ke ba da damarmai daidaitawadon sarrafa sigina na gani tare da babban inganci. Sakamakon gwaji ya nuna cewa mai daidaitawa yana nuna halaye masu kyau a cikin kewayon DC (na yanzu kai tsaye) zuwa 1.14 THZ kuma yana da tsayayye a cikin mitar mitar 500 GHz zuwa 800 GHz.
Don zurfafa nazarin tsarin aiki na na'ura mai kwakwalwa, ƙungiyar bincike ta gina cikakken samfurin da'irar da'irar kuma ta bincika tasirin sigogin tsari daban-daban akan aikin na'ura ta hanyar kwaikwayo. Sakamakon gwaji yana cikin kyakkyawar yarjejeniya tare da ƙirar ka'idar, ƙara tabbatar da inganci da kwanciyar hankali na modulator. Bugu da ƙari, masu bincike sun ba da shawarar shirin ingantawa. Ana tsammanin ta hanyar ingantaccen ƙira, mitar aiki na wannan na'ura na iya wuce 1THz a nan gaba, har ma ya kai sama da 2THz!
Wannan binciken yana nuna babban yuwuwar plasmaelectrooptic modulatorsa cikin sadarwa na THz da na'urorin haɗin gwiwar hoto (PICs). Wannan na'urar, tare da halayen sa na ultra-wideband, babban inganci da haɗin kai, yana ba da sabon bayani don daidaita siginar THz. A nan gaba, tare da ƙarin haɓaka ƙirar na'urar da ayyukan masana'antu, ana sa ran mitar aiki na masu canza plasma za su wuce 2 THz, suna samun mafi girman ƙimar bayanai da faffadan ɗaukar hoto. Zuwan zamanin THz ba wai yana nufin saurin watsa bayanai ba ne da ingantacciyar damar fahimta ba, amma kuma zai haɓaka zurfafa haɗin kai na fagage da yawa kamar sadarwa mara waya, kwamfuta na gani, da gano hankali. Ci gaban na'urori masu amfani da lantarki na plasma na iya zama babban matakin da ke jagorantar haɓaka fasahar THz, yana ba da tushe don haɗin kai mai sauri na al'umman bayanan nan gaba.
Lokacin aikawa: Juni-09-2025