Imodulator entsha ye-electro-optic ye-ultra-wideband 997GHz

Ibhendi entsha ebanzi kakhulu ye-997GHzi-electro-optic modulator

I-modulator entsha ye-electro-optic ye-ultra-wideband ibeke irekhodi ye-bandwidth ye-997GHz

Kutshanje, iqela lophando eZurich, eSwitzerland, liphumelele ekuphuhliseni i-ultra-wideband electro-optic modulator esebenza kwiifrikhwensi eziqala kwi-10 MHz ukuya kwi-1.14 THz, ibeka irekhodi ye-bandwidth ye-3 dB kwi-997 GHz, eyirekhodi ephindwe kabini kunale yangoku. Olu phuculo lubangelwa kuyilo oluphuculweyo lwee-plasma modulators, oluvula indawo entsha yee-terahertz photonic integrated circuits (PICs) ezizayo.

Okwangoku, unxibelelwano olungenazingcingo luxhomekeke kakhulu kwii-microwave kunye namaza e-millimeter, kodwa izixhobo ze-spectrum zezi frequency bands ziye zagcwala. Nangona unxibelelwano lwe-optical lune-bandwidth enkulu, alunakusetyenziselwa ngqo ukusasazwa kwe-wireless kwindawo ekhululekileyo. Ke ngoko, unxibelelwano lwe-THZ luthathwa njenge "bridge yegolide" edibanisa iinethiwekhi ezingenazingcingo kunye ne-fiber-optic, ebonelela ngesisombululo esifanelekileyo kwiinkqubo zonxibelelwano ze-6G kunye nezinga eliphezulu. Ingxaki ikukusebenza kwee-modulators ze-electro-optic ezikhoyo (ezifanaImodulator yeLiNbO₃, ii-InGaAs, kunye nezixhobo ezisekelwe kwi-silicon) kwibhendi ye-frequency ye-THz azanelanga kwaphela. Ukuncitshiswa kwesignali kuyabonakala. I-bandwidth esebenzayo imalunga ne-14 GHz kuphela kwaye i-frequency ephezulu yokuthwala yi-100 GHz kuphela, nto leyo ekude kakhulu ekuhlangabezaneni nemigangatho efunekayo kunxibelelwano lwe-THZ. Kweli nqaku, abaphandi baphuhlise i-modulator entsha esekelwe kwi-plasma, banyusa ngempumelelo i-bandwidth ye-3 dB ukuya kwi-997 GHz, eyirekhodi ephindwe kabini yangoku, njengoko kubonisiwe kuMfanekiso 1. Olu phuhliso alupheleli nje ekuphuleni imida yetekhnoloji yendabuko kodwa lukwandisa indlela yophuhliso lwexesha elizayo lonxibelelwano lwe-THZ!

Umfanekiso 1 Imodulator ye-electro-optic yePlasma ene-bandwidth ye-THZ

Impumelelo ephambili yolu hlobo lutsha lwe-modulator ikwi-high-tech ebizwa ngokuba yi-"plasma effect". Khawuthelekelele ukuba xa ukukhanya kukhanya kumphezulu we-nanostructure yesinyithi, kuhambelana nee-electron ezikwizinto - ii-electron zijikeleza kunye ziqhutywa kukukhanya, zenze uhlobo oluthile lwe-wave. Yile nguqu-nguquko kanye evumela ukubai-modulatorukulawula imiqondiso ye-optical ngokusebenza kakuhle kakhulu. Iziphumo zovavanyo zibonisa ukuba i-modulator ibonisa iimpawu ezilungileyo ze-modulation ngaphakathi koluhlu lwe-DC (umbane othe ngqo) ukuya kwi-1.14 THz kwaye inokwanda okuzinzileyo kwibhendi yefrikhwensi ye-500 GHz ukuya kwi-800 GHz.

Ukuze bafunde nzulu indlela yokusebenza ye-modulator, iqela lophando lenze imodeli yesekethe elinganayo eneenkcukacha kwaye bahlalutya impembelelo yeeparamitha ezahlukeneyo zesakhiwo ekusebenzeni kwe-modulator ngokulinganisa. Iziphumo zovavanyo ziyavumelana kakuhle nemodeli yethiyori, ziqinisekisa ngakumbi ukusebenza kakuhle kunye nokuzinza kwe-modulator. Ukongeza, abaphandi bacebise isicwangciso sokuphucula. Kulindeleke ukuba ngoyilo oluphuculweyo, imvamisa yokusebenza yale modulator ingadlula i-1THz kwixesha elizayo, kwaye ifikelele nangaphezu kwe-2THz!

Olu phononongo lubonisa amandla amakhulu e-plasmaiimodulators ze-electro-optickwi-THz communication kunye ne-photonic integrated circuits (PICs). Esi sixhobo, esineempawu zaso ze-ultra-wideband, ukusebenza kakuhle kunye nokuhlanganiswa, sinika isisombululo esitsha sokuguqulwa kwesignali ye-THz. Kwixesha elizayo, ngokulungiswa ngakumbi kwenkqubo yoyilo lwesixhobo kunye nokuveliswa, i-frequency yokusebenza kwee-plasma modulators kulindeleke ukuba idlule i-2 THz, ifikelele kumazinga aphezulu edatha kunye nokugubungela i-spectrum ebanzi. Ukufika kwexesha le-THz akuthethi nje kuphela ukuhanjiswa kwedatha okukhawulezayo kunye nokukwazi ukuva okuchanekileyo, kodwa kuya kukhuthaza ukuhlanganiswa okunzulu kwamacandelo amaninzi afana nonxibelelwano olungenazingcingo, i-optical computing, kunye nokufumanisa okukrelekrele. Ukuphumelela kwee-plasma electro-optic modulators kunokuba linyathelo eliphambili elikhokelela kuphuhliso lwetekhnoloji ye-THz, okubonelela ngesiseko sokunxibelelana okukhawulezayo koluntu lolwazi lwexesha elizayo.