He whānuitanga whānui hou 997GHzkaiwhakarerekē hiko-whatu
Kua whakatūria e te pūwhakarerekētanga hiko-whatu ultra-wideband hou te rekoata whānui o te 997GHz
Nō nā tata nei, kua angitu te whakawhanake a tētahi rōpū rangahau i Zurich, Switzerland, i tētahi pūwhakatikatika hiko-whatu whānui-rahi e mahi ana i ngā auau mai i te 10 MHz ki te 1.14 THz, e whakatakoto ana i tētahi rekoata whānui 3 dB i te 997 GHz, e rua te nui atu i te rekoata o nāianei. Nā te hoahoa pai ake o ngā pūwhakatikatika plasma tēnei putanga hou, e whakatuwhera ana i tētahi wāhi hou mō ngā ara iahiko whakauru terahertz photonic (PIC) o te heke mai.
I tēnei wā, ko te nuinga o te whakawhitiwhiti kōrero ahokore e whakawhirinaki ana ki ngā ngaruiti me ngā ngaru mirimita, engari kua kī tonu ngā rauemi whānuitanga o ēnei roopu auau. Ahakoa he nui te whānuitanga o te whakawhitiwhiti kōrero whatu, kāore e taea te whakamahi tika mō te tuku ahokore i te wāhi wātea. Nō reira, e kiia ana te whakawhitiwhiti kōrero THz ko te "piriti koura" e hono ana i ngā whatunga ahokore me te muka-whatu, e whakarato ana i te otinga pai mō te 6G me ngā pūnaha whakawhitiwhiti kōrero tere teitei ake. Ko te raruraru kei roto i te mahi a ngā kaiwhakatikatika hiko-whatu o nāianei (pērā iKaiwhakarerekē LiNbO₃, InGaAs, me ngā rauemi e ahu mai ana i te silicon) i roto i te roopu auau THz, kāore i te rawaka. He mārama te whakaiti i te tohu. Ko te whānui mahi he tata ki te 14 GHz, ā, ko te auau kawe mōrahi he 100 GHz anake, he tawhiti rawa atu tēnei i te tutuki i ngā paerewa e hiahiatia ana mō te whakawhitiwhiti THz. I roto i tēnei tuhinga, kua whakawhanakehia e ngā kairangahau tētahi modulator hou e ahu mai ana i te plasma, me te whakanui angitu i te whānui 3 dB ki te 997 GHz, he rua te nui o te rekoata o nāianei, e whakaaturia ana i te Pikitia 1. Ehara i te mea ka pakaru noa tēnei putanga i ngā herenga o ngā hangarau tuku iho, engari ka whānui ake hoki i te ara mō te whanaketanga o te whakawhitiwhiti THz ā muri ake nei!
Pikitia 1. Te whakarerekētanga hiko-whatu plasma me te whānui o te THz
Ko te putanga matua o tēnei momo whakarerekētanga hou kei roto i te hangarau teitei e kiia nei ko te "pānga plasma". Whakaarohia ina whiti te mārama ki runga i te mata o te hanganga nano whakarewa, ka pāorooro ki ngā irahiko o roto i te rauemi - ka oho ngātahi ngā irahiko e peia ana e te mārama, ka hanga he momo ngaru motuhake. Koinei tonu te piki me te heke e āhei ai tekaiwhakarerekēki te whakahaere i ngā tohu whatu me te tino pai o te whai huatanga. E whakaatu ana ngā hua whakamātautau he pai ngā āhuatanga whakarerekētanga o te modulator i roto i te awhe o te DC (auau tika) ki te 1.14 THz, ā, he pumau te pikinga i roto i te awhe auau o te 500 GHz ki te 800 GHz.
Hei ako hōhonu i te tikanga mahi a te modulator, i hangaia e te tīma rangahau he tauira ara iahiko ōrite taipitopito, ā, i tātarihia te awe o ngā tawhā hanganga rerekē ki te mahi a te modulator mā te whakatauira. He pai te ōrite o ngā hua whakamātautau ki te tauira ariā, e whakamana ana i te whai huatanga me te pumau o te modulator. Hei tāpiri, kua whakaarohia e ngā kairangahau he mahere whakapai ake. E matapaetia ana mā te hoahoa kua arotauhia, ka taea e te auau mahi o tēnei modulator te neke atu i te 1THz a muri ake nei, ā, ka eke ki runga ake i te 2THz!
E whakaatu ana tēnei rangahau i te kaha nui o te plasmangā kaiwhakatikatika hiko-whatui roto i te whakawhitiwhiti kōrero THz me ngā ara iahiko whakauru photonic (PIC). Mā tēnei taputapu, me ōna āhuatanga o te whānuitanga-rahi, te whai huatanga teitei me te whakaurunga, ka whakaratohia he otinga hou mō te whakarerekētanga tohu THz. I te heke mai, me te arotautanga ake o te hoahoa taputapu me ngā tukanga hanga, e matapaetia ana ka neke ake te auau mahi o ngā kaiwhakatikatika plasma i te 2 THz, ka eke ki ngā reiti raraunga teitei ake me te whānuitanga o te kapinga whānuitanga. Ko te taenga mai o te wā THz ehara i te mea ko te tuku raraunga tere ake me ngā āheinga pūoko tika ake, engari ka whakatairanga hoki i te whakaurunga hohonu o ngā mara maha pēnei i te whakawhitiwhiti kōrero ahokore, te rorohiko whatu, me te kimi mohio. Ko te putanga mai o ngā kaiwhakatikatika hiko-whatu plasma ka noho hei taahiraa matua hei ārahi i te whanaketanga o te hangarau THz, hei whakarato i te turanga mō te hononga tere-teitei o te hapori mōhiohio ā muri ake nei.
Wā tuku: Pipiri-09-2025