Sabuwar 997GHz mai faɗi sosaina'urar sarrafa na'urar lantarki (electro-optical modulator)
Wani sabon na'urar sarrafa wutar lantarki mai faɗi-faɗi ta zamani (ultra wideband electro-optic modulator) ya kafa rikodin bandwidth na 997GHz
Kwanan nan, wata ƙungiyar bincike a Zurich, Switzerland, ta yi nasarar ƙirƙirar na'urar auna ƙarfin lantarki mai faɗi da yawa wacce ke aiki a mitoci daga 10 MHz zuwa 1.14 THz, inda ta kafa rikodin bandwidth na 3 dB a 997 GHz, wanda ya ninka rikodin na yanzu. Wannan ci gaban an danganta shi da ingantaccen ƙirar na'urorin auna ƙarfin plasma, wanda ya buɗe sabon sarari don da'irori masu haɗakar terahertz photonic (PICs) na gaba.
A halin yanzu, sadarwa mara waya ta fi dogara ne akan microwaves da millimeter waves, amma albarkatun bakan na waɗannan mitoci sun kasance cikakke. Duk da cewa sadarwa ta gani tana da babban bandwidth, ba za a iya amfani da ita kai tsaye don watsawa mara waya a cikin sararin samaniya kyauta ba. Saboda haka, ana ɗaukar sadarwa ta THZ a matsayin "gadar zinare" da ke haɗa hanyoyin sadarwa mara waya da fiber-optic, tana samar da mafita mai kyau ga tsarin sadarwa na 6G da mafi girman farashi. Matsalar ta ta'allaka ne da cewa aikin na'urorin lantarki na zamani (kamarMai daidaita LiNbO₃, InGaAs, da kayan da aka yi da silicon) a cikin mitar THz ba su isa ba. Ragewar siginar a bayyane take. Matsakaicin saurin aiki yana kusan GHz 14 kawai kuma matsakaicin mitar mai ɗaukar kaya shine GHz 100 kawai, wanda bai cika ƙa'idodin da ake buƙata don sadarwa ta THz ba. A cikin wannan labarin, masu bincike sun ƙirƙiri sabon mai daidaita bayanai na plasma, wanda ya sami nasarar ƙara bandwidth 3 dB zuwa 997 GHz, wanda ya ninka rikodin yanzu sau biyu, kamar yadda aka nuna a Hoto na 1. Wannan ci gaba ba wai kawai ya karya iyakokin fasahar gargajiya ba har ma ya faɗaɗa hanyar ci gaban sadarwa ta THz nan gaba!
Hoto na 1 Mai daidaita wutar lantarki ta plasma tare da bandwidth na THZ
Babban ci gaban wannan sabon nau'in modulator yana cikin fasahar zamani da ake kira "tasirin plasma". Ka yi tunanin lokacin da haske ya haskaka a saman nanostructure na ƙarfe, yana yin kama da electrons a cikin kayan - electrons suna juyawa tare da haske yana motsawa, suna samar da wani nau'in raƙuman ruwa na musamman. Wannan canjin ne kawai ke ba da damarmai daidaitadon sarrafa siginar gani tare da ingantaccen aiki mai yawa. Sakamakon gwaji ya nuna cewa mai daidaita yana nuna kyawawan halaye na daidaitawa a cikin kewayon DC (ƙarshen wutar lantarki kai tsaye) zuwa 1.14 THz kuma yana da karko mai ƙarfi a cikin kewayon mita na 500 GHz zuwa 800 GHz.
Domin zurfafa nazarin tsarin aiki na mai gyaran, ƙungiyar bincike ta gina cikakken tsarin da'ira mai daidai kuma ta yi nazari kan tasirin sigogi daban-daban na tsarin akan aikin mai gyaran ta hanyar kwaikwayon. Sakamakon gwaji ya yi daidai da tsarin ka'idar, yana ƙara tabbatar da inganci da kwanciyar hankali na mai gyaran. Bugu da ƙari, masu bincike sun gabatar da tsarin haɓakawa. Ana sa ran ta hanyar ingantaccen ƙira, mitar aiki na wannan mai gyaran zai iya wuce 1THz a nan gaba, har ma ya kai sama da 2THz!
Wannan bincike ya nuna babban yuwuwar amfani da sinadarin plasmamasu daidaita wutar lantarkia cikin hanyoyin sadarwa na THZ da na'urorin haɗakar photonic (PICs). Wannan na'urar, tare da halayenta na ultra-wideband, ingantaccen aiki da haɗin kai, tana samar da sabuwar mafita don daidaita siginar THZ. A nan gaba, tare da ƙarin inganta tsarin ƙira na na'urori da hanyoyin kera, ana sa ran yawan aiki na masu daidaita plasma zai wuce THZ 2, wanda zai cimma mafi girman ƙimar bayanai da kuma faɗaɗa kewayon bakan. Zuwan zamanin THZ ba wai kawai yana nufin saurin watsa bayanai da ƙwarewar ji daidai ba, har ma zai haɓaka haɗin kai mai zurfi na fannoni da yawa kamar sadarwa mara waya, kwamfuta mai gani, da gano hankali. Ci gaban masu daidaita electro-optic na plasma na iya zama babban mataki wanda ke jagorantar ci gaban fasahar THZ, yana samar da tushe don haɗin kai mai sauri na al'ummar bayanai na gaba.
Lokacin Saƙo: Yuni-09-2025