Modulator nshya ya electro-optique ya 997GHz ifite umurambararo munini cyane

Umuyoboro mushya wa 997GHzmodulator y'amashanyarazi n'amatara

Umuyoboro mushya wa electro-optic modulator ufite uburebure bwa 997GHz washyizeho agahigo ko gukoresha bandwidth

Vuba aha, itsinda ry’abashakashatsi bo muri Zurich, mu Busuwisi, ryashoboye gukora modulator ya electro-optic ya ultra-wideband ikora ku murongo uri hagati ya 10 MHz na 1.14 THz, ishyiraho record ya bandwidth ya 3 dB kuri 997 GHz, ikaba ingana na record yikubye kabiri ubu. Iri terambere ryatewe n’imiterere myiza ya modulator za plasma, bifungura umwanya mushya w’insinga za terahertz photonic integrated circuits (PICs) zizaza.

Muri iki gihe, itumanaho rikoresha insinga rishingiye cyane cyane kuri mikoroonde na millimetero, ariko umutungo w’iyi mirongo y’amajwi wakunze kuba wuzuye. Nubwo itumanaho rikoresha insinga rifite umuyoboro munini w’itumanaho, ntirishobora gukoreshwa mu buryo butaziguye mu kohereza insinga mu mwanya w’ubuntu. Kubwibyo, itumanaho rya THz rifatwa nk'"ikiraro cy'izahabu" gihuza insinga n'imiyoboro ya fibre-optique, bitanga igisubizo cyiza kuri sisitemu z'itumanaho za 6G n'izifite ikoranabuhanga ryo hejuru. Ikibazo kiri mu mikorere y'ibikoresho bikoresha insinga (nk'ibimodulator ya LiNbO₃, InGaAs, n'ibikoresho bishingiye kuri silikoni) muri THz frequency band ntabwo bihagije. Kugabanuka kw'ikimenyetso biragaragara. Umuvuduko w'imikorere ni hafi 14 GHz naho umuvuduko ntarengwa wo gutwara ni 100 GHz gusa, ibyo bikaba bitaragera ku bipimo bisabwa mu itumanaho rya THz. Muri iyi nkuru, abashakashatsi bakoze modulator nshya ishingiye kuri plasma, bongera neza umuvuduko wa 3 dB ukagera kuri 997 GHz, ukaba inshuro ebyiri z'amateka agezweho, nk'uko bigaragara ku Ishusho ya 1. Iri terambere ntirica gusa imbogamizi z'ikoranabuhanga gakondo ahubwo rinagura inzira y'iterambere ry'itumanaho rya THz mu gihe kizaza!

Igishushanyo cya 1: Modulator ya electro-optic ya Plasma ifite umurambararo wa THz

Iterambere ry'ingenzi ry'ubu bwoko bushya bwa modulator riri mu ikoranabuhanga rigezweho ryitwa "ingaruka za plasma". Tekereza ko iyo urumuri rumuritse ku buso bw'icyuma gito, ruhurirana na electron ziri mu bikoresho - electron zizunguruka hamwe ziyobowe n'urumuri, zigakora ubwoko bwihariye bw'umuraba. Ni uku guhinduka kw'ibintu bitumamodulatorkugira ngo ikoreshe ibimenyetso by'urumuri ku buryo bunoze cyane. Ibisubizo by'igerageza bigaragaza ko modulator igaragaza imiterere myiza ya modulation iri hagati ya DC (umuyoboro w'amashanyarazi utaziguye) na 1.14 THz kandi ifite inyungu ihamye mu mubare wa 500 GHz kugeza 800 GHz.

Kugira ngo bigane byimbitse uburyo bw'imikorere ya modulator, itsinda ry'abashakashatsi ryubatse icyitegererezo cy'uruziga rungana kandi basesenguye ingaruka z'imiterere itandukanye ku mikorere ya modulator binyuze mu kwigana. Ibisubizo by'igerageza bihuye neza n'icyitegererezo cy'inyigisho, birushaho kwemeza imikorere n'ubudahangarwa bya modulator. Byongeye kandi, abashakashatsi batanze gahunda yo kunoza. Biteganijwe ko binyuze mu gishushanyo mbonera cyiza, inshuro z'imikorere ya modulator zishobora kurenga 1THz mu gihe kizaza, ndetse zikagera no hejuru ya 2THz!

Ubu bushakashatsi bugaragaza ubushobozi bukomeye bwa plasmamodulators za electro-optiquemu itumanaho rya THz n'imiyoboro ya fotonike (PICs). Iki gikoresho, gifite imiterere yacyo ya ultra-wideband, imikorere myiza no kwihuza, gitanga igisubizo gishya cyo guhindura ibimenyetso bya THz. Mu gihe kiri imbere, hamwe no kunoza imiterere y'ibikoresho no gukora, imikorere ya modulator za plasma yitezweho kurenga 2 THz, bikagera ku gipimo cyo hejuru cy'amakuru no gukwirakwiza spectrum yagutse. Kuza kw'igihe cya THz ntibisobanura gusa kohereza amakuru vuba no kumenya neza, ahubwo bizanateza imbere guhuza cyane amashami menshi nko itumanaho ridafite umugozi, mudasobwa ikoresha optique, no kumenya amakuru mu buryo bw'ubwenge. Iterambere rya modulator za plasma electro-optic rishobora kuba intambwe ikomeye iyobora iterambere ry'ikoranabuhanga rya THz, ritanga ishingiro ry'imikoranire yihuta y'umuryango w'amakuru w'ejo hazaza.