Kua rua te kaha o te raraunga kua piki ake i tētahi momo pūwhakarea terahertz hou, ā, kua tino whakarei ake i te whakawhitiwhiti kōrero 6G me te whānui o te hononga i mua, me te iti o te ngaronga raraunga.
Kua whakauruhia e ngā kairangahau tētahi pūwhakarea tere-whānui terahertz e whakaneke rua ana i te kaha raraunga, ā, e kawe mai ana i ngā whanaketanga hou ki te 6G me tua atu. (Pūtake whakaahua: Getty Images)
Ko te whakawhitiwhiti kōrero ahokore o te whakatipuranga e whai ake nei, e tohuhia ana e te hangarau terahertz, e oati ana ki te huri i te tuku raraunga.
Ka whakahaerehia ēnei pūnaha i ngā auau terahertz, e tuku ana i te whānui o te raraunga tino tere mō te tuku raraunga me te whakawhitiwhiti kōrero. Heoi, kia tino tutuki ai tēnei pūmanawa, me wikitoria ngā wero hangarau nui, inā koa te whakahaere me te whakamahi pai i te whānuitanga e wātea ana.
Kua arohia tēnei wero e tētahi whanaketanga hou: ko te tuatahi o ngā taputapu whakawhiti-rahi-rahi kua whakauruhia ki te terahertz polarization (de)multiplexer i hangaia ki runga i tētahi tūāpapa silicon kore-papa.
Ko te whāinga o tēnei hoahoa auaha ko te roopu J sub-terahertz (220-330 GHz) ā, ko te whakawhiti i te whakawhitiwhiti kōrero mō te 6G me tua atu. Ka whakanekehia e te taputapu te kaha raraunga me te pupuri i te tere ngaronga raraunga iti, ka whakatakoto huarahi mō ngā whatunga ahokore tere-teitei whai hua me te pono.
Ko te tīma kei muri i tēnei kaupapa nui ko Ahorangi Withawat Withayachumnankul o te Kura Hangarau Hiko me te Mīhini o Te Whare Wānanga o Adelaide, ko Tākuta Weijie Gao, he kairangahau paerua i Te Whare Wānanga o Osaka ināianei, me Ahorangi Masayuki Fujita.
I kī a Ahorangi Withayachumnankul, "Mā te pūwhakarea pōraritanga kua whakaarohia ka taea te tuku i ngā awa raraunga maha i te wā kotahi i roto i te roopu auau kotahi, ka ruarua te kaha raraunga." Ko te whānui o te whānui e tutukihia ana e te taputapu he mea kāore i kitea i mua puta noa i ngā awhe auau katoa, he peke nui tēnei mō ngā pūwhakarea whakauru.
He mea nui ngā pūwhakarea pōraritanga i roto i ngā whakawhitiwhiti kōrero o ēnei rā, nā te mea ka taea e ngā tohu maha te tohatoha i te roopu auau kotahi, ka nui ake te whakanui ake i te kaha o te hongere.
Ka tutuki tēnei i te taputapu hou mā te whakamahi i ngā hononga aronga kōniko me te whakakikorua reo whai hua anisotropic. Ka whakarei ake ēnei wāhanga i te birefringence polarization, ka hua ake he ōwehenga whakamōkito polarization teitei (PER) me te whānui o te whānui o te whānui—ngā āhuatanga matua o ngā pūnaha whakawhitiwhiti terahertz whai hua.
He rerekē tēnei i ngā hoahoa tuku iho e whakawhirinaki ana ki ngā arataki ngaru kore-taurite uaua, e whakawhirinaki ana ki te auau, ka whakamahia e te multiplexer hou te whakakikorua anisotropic me te iti noa o te whakawhirinaki ki te auau. Ka whakamahia katoatia e tēnei huarahi te whānui o te whānui e whakaratohia ana e ngā hononga kōniko.
Ko te hua he tata ki te 40% te whānui o te whānuitanga, he neke atu i te 20 dB te PER toharite, me te iti rawa o te ngaronga whakaurunga tata ki te 1 dB. He nui ake ēnei inenga mahi i ērā o ngā hoahoa whatu me ngā hoahoa ngaruiti o nāianei, e pāngia ana e te whānui kuiti me te ngaronga nui.
Ehara i te mea ko te mahi a te tīma rangahau anake te whakarei ake i te whai huatanga o ngā pūnaha terahertz engari ko te whakatakoto hoki i te turanga mō tētahi wā hou i roto i te whakawhitiwhiti kōrero ahokore. I kī a Tākuta Gao, "Ko tēnei auahatanga he kaiārahi matua ki te wetewete i te pūmanawa o te whakawhitiwhiti kōrero terahertz." Ko ētahi o ngā tono ko te roma ataata whakamāramatanga teitei, te mooni whakanui, me ngā whatunga pūkoro o te whakatupuranga hou pēnei i te 6G.
He nui ngā herenga kei mua i ngā otinga whakahaere pōraru terahertz tuku iho, pērā i ngā transducers aratau orthogonal (OMT) e hangai ana ki ngā arai ngaru whakarewa tapawhā. Ka piki ake ngā mate ohmic o ngā arai ngaru whakarewa i ngā auau teitei ake, ā, he uaua ā rātou tukanga hanga nā ngā whakaritenga āhuahanga tino pakari.
Ko ngā mīhini whakarea porowhita whatu, tae atu ki ērā e whakamahi ana i ngā ine whakawhiti Mach-Zehnder, i ngā tioata photonic rānei, ka pai ake te whakaurunga me te iti ake o ngā mate engari he maha ngā wā ka hiahiatia he taurite i waenga i te whānui o te hononga, te kiato, me te uaua o te hanga.
He whānuitia te whakamahinga o ngā hononga aronga i roto i ngā pūnaha whatu, ā, me kaha te kaha o te polarization birefringence kia tutuki ai te rahi kiato me te PER teitei. Heoi, he iti noa iho te whānui o te hononga me te aro ki ngā ātete hangahanga.
Ka whakakotahi te multiplexer hou i ngā painga o ngā hononga ahunga kōniko me te whakakikorua reo whai hua, ka hinga i ēnei herenga. Ka whakaatuhia e te whakakikorua anisotropic te birefringence nui, ka whakarite i te PER teitei puta noa i te whānuitanga whānui. Ko tēnei mātāpono hoahoa he tohu i te wehenga atu i ngā tikanga tuku iho, e whakarato ana i tētahi otinga tauine me te whai hua mō te whakaurunga terahertz.
Nā te whakamātautau whakamana i te multiplexer i whakaū tōna mahi tino pai. He pai te mahi a te taputapu i roto i te awhe 225-330 GHz, ā, ka eke ki te whānuitanga o te whānui o te 37.8% me te pupuri i te PER i runga ake i te 20 dB. Nā tōna rahi kiato me te hototahi ki ngā tukanga hanga paerewa, he pai mō te hanga papatipu.
I kī a Tākuta Gao, "Ehara i te mea ka whakarei ake tēnei auahatanga i te whai huatanga o ngā pūnaha whakawhitiwhiti terahertz anake, engari ka whakatakoto hoki i te ara mō ngā whatunga ahokore tere-teitei kaha ake, pono ake hoki."
Ko ngā whakamahinga pea o tēnei hangarau kei tua atu i ngā pūnaha whakawhitiwhiti kōrero. Mā te whakapai ake i te whakamahinga o te whānuitanga, ka taea e te multiplexer te akiaki i ngā whanaketanga i roto i ngā mara pēnei i te radar, te whakaahua, me te Ipurangi o ngā Mea. "I roto i te tekau tau, e tumanakohia ana ka whakamahia whānuitia ēnei hangarau terahertz me te whakauru puta noa i ngā ahumahi rerekē," te kī a Ahorangi Withayachumnankul.
Ka taea hoki te whakauru pai i te multiplexer ki ngā taputapu hanga hihi o mua i whakawhanakehia e te tīma, ka taea ai ngā mahi whakawhitiwhiti matatau i runga i tētahi tūāpapa kotahi. E whakaatu ana tēnei hototahi i te whānui me te tauine o te tūāpapa arataki ngaru dielectric whai hua.
Kua whakaputaina ngā kitenga rangahau a te tīma ki roto i te puka Laser & Photonic Reviews, e whakaatu ana i te hiranga o ēnei kitenga ki te whakatairanga i te hangarau photonic terahertz. I kī a Ahorangi Fujita, "Mā te wikitoria i ngā arai hangarau nui, e tumanakohia ana ka whakaohohia e tēnei auahatanga te hiahia me ngā mahi rangahau i roto i te mara."
E matapaetia ana e ngā kairangahau mā tā rātou mahi ka whakaaweawe i ngā tono hou me ngā whakapainga hangarau anō i ngā tau e haere ake nei, ā, ka mutu, ka hua ake ngā tauira me ngā hua arumoni.
He taahiraa nui tēnei ki mua i te whakatuwheratanga o te pūmanawa o te whakawhitiwhiti terahertz. Ka whakatakotohia he paerewa hou mō ngā taputapu terahertz whakauru me ōna inenga mahi kāore i kitea i mua.
I te mea kei te tipu haere tonu te hiahia mō ngā whatunga whakawhitiwhiti kōrero tere-nui, kaha-nui, ka whai wāhi nui aua auahatanga ki te hanga i te heke mai o te hangarau ahokore.
Wā tuku: Hakihea-16-2024