I-Ultra-wideband entsha 997GHzimodyuli ye-electro-optic
Imodyuli entsha ye-ultra-wideband ye-electro-optic isete irekhodi ye-bandwidth ye-997GHz
Kungekudala, iqela lophando eZurich, eSwitzerland, liye laphuhlisa ngempumelelo i-ultra-wideband electro-optic modulator esebenza kwii-frequencies ukusuka kwi-10 MHz ukuya kwi-1.14 THz, ibeka irekhodi le-3 dB bandwidth kwi-997 GHz, ephindwe kabini irekhodi langoku. Le mpumelelo ibalelwa kuyilo oluphuculweyo lweemodyuli zeplasma, ukuvula indawo entsha kraca yeesekethe ezidibeneyo ze-terahertz photonic (PICs).
Okwangoku, unxibelelwano olungenazingcingo ikakhulu luxhomekeke kwii-microwaves kunye namaza e-millimeter, kodwa izibonelelo ze-spectrum zezi bhendi zamaza zithande ukugcwala. Nangona unxibelelwano lwe-optical lune-bandwidth enkulu, ayinakusetyenziselwa ngokuthe ngqo ukuhanjiswa kwamacingo kwindawo yamahhala. Ngoko ke, unxibelelwano lwe-THz luthathwa njenge "ibhuloho yegolide" edibanisa i-wireless kunye ne-fiber-optic networks, inika isisombululo esifanelekileyo kwi-6G kunye neenkqubo zonxibelelwano eziphezulu. Ingxaki ilele ekubeni ukusebenza kweemodyuli ezikhoyo ze-electro-optic (ezinjeImodyuli yeLiNbO₃, I-InGaAs, kunye nezixhobo ezisekelwe kwi-silicon) kwi-band frequency ye-THz ayikude ngokwaneleyo. Ukunciphisa umqondiso kucacile. I-bandwidth esebenzayo kuphela malunga ne-14 GHz kwaye i-frequency carrier carrier yi-100 GHz kuphela, ekude ukuhlangabezana nemigangatho efunekayo kunxibelelwano lwe-THz. Kweli nqaku, abaphandi baye baqulunqa i-modulator entsha esekelwe kwi-plasma, ngokunyusa ngempumelelo i-3 dB bandwidth ukuya kwi-997 GHz, ephindwe kabini irekhodi langoku, njengoko kuboniswe kuMzobo 1. Le mpumelelo ayiphuli nje kuphela imida yobuchwepheshe bendabuko kodwa iphinda ikhulise indlela yokuphuhliswa kwexesha elizayo lonxibelelwano lweTHz!
Umzobo we-1 Plasma imodyuli ye-electro-optic ene-bandwidth ye-THz
Ukuphumelela okuphambili kolu hlobo olutsha lwemodyuli ilele kubuchwephesha obuphezulu obubizwa ngokuba yi "plasma effect". Khawucinge ukuba xa ukukhanya kukhanya kumphezulu we-nanostructure yensimbi, kuhambelana nee-electron kwizinto eziphathekayo - i-electron i-oscillate ngokudibeneyo iqhutywe kukukhanya, yenze uhlobo olukhethekileyo lwamaza. Yile nguquko kanye eyenza ukuba iimodyuliukwenza iisignali zamehlo ngobuchule obuphezulu kakhulu. Iziphumo zovavanyo zibonisa ukuba i-modulator ibonisa iimpawu ezintle zokumodareyitha ngaphakathi koluhlu lwe-DC (ngoku ngokuthe ngqo) ukuya kwi-1.14 THz kwaye inenzuzo ezinzileyo kwi-frequency band ye-500 GHz ukuya kwi-800 GHz.
Ukufundisisa ngokunzulu indlela yokusebenza yemodyuli, iqela lophando lenze imodeli yesekethe efanayo eneenkcukacha kwaye yahlalutya ifuthe leeparamitha ezahlukeneyo zesakhiwo ekusebenzeni kwemodyuli ngokulinganisa. Iziphumo zovavanyo zivumelana kakuhle kunye nemodeli yethiyori, iqinisekisa ngakumbi ukusebenza kakuhle kunye nokuzinza kwemodyuli. Ukongeza, abaphandi bacebise isicwangciso sokuphucula. Kulindeleke ukuba ngoyilo oluphuculweyo, ukusebenza rhoqo kwale modyuli kunokudlula i-1THz kwixesha elizayo, kwaye kude kufikelele nangaphezulu kwe-2THz!
Olu phononongo lubonisa amandla amakhulu eplasmaiimodyuli ze-electro-optickwi-THz yonxibelelwano kunye neesekethe ezidibeneyo ze-photonic (PICs). Esi sixhobo, esineempawu ze-Ultra-wideband, ukusebenza kakuhle kunye nokudityaniswa, sibonelela ngesisombululo esitsha sokumodareyitha komqondiso we-THz. Kwixesha elizayo, ngokulungiswa okuthe kratya koyilo lwesixhobo kunye neenkqubo zokuvelisa, ukuphindaphindeka kokusebenza kweemodyuli zeplasma kulindeleke ukuba kudlule i-2 THz, ukufikelela kumazinga aphezulu edatha kunye nokugubungela okubanzi. Ukufika kwexesha le-THz akuthethi nje ukuhanjiswa kwedatha ngokukhawuleza kunye nobuchule obuchanekileyo bokuqonda, kodwa kuya kukhuthaza ukuhlanganiswa okunzulu kweenkalo ezininzi ezifana nonxibelelwano olungenacingo, i-computing optical, kunye nokufumanisa okuhlakaniphile. Ukuphumelela kwe-plasma electro-optic modulators ingaba yinyathelo eliphambili elikhokelela ekuphuhliseni iteknoloji ye-THz, ukubonelela ngesiseko soqhagamshelwano olukhawulezayo loluntu lolwazi lwexesha elizayo.
Ixesha lokuposa: Jun-09-2025