Uhlobo olutsha lwe-terahertz multiplexer luphindwe kabini umthamo wedatha kwaye luphucule kakhulu unxibelelwano lwe-6G kunye ne-bandwidth engazange ibonwe ngaphambili kunye nokulahleka kwedatha ephantsi.
Abaphandi baye bazisa i-multi-wide band terahertz multiplexer ephinda kabini umthamo wedatha kwaye izisa uguquko oluqhubekayo kwi-6G nangaphaya. (Umthombo womfanekiso: Getty Images)
Unxibelelwano olungenazingcingo lwesizukulwana esilandelayo, olumelwe yiteknoloji ye-terahertz, luthembisa ukuguqula ukuhanjiswa kwedatha.
Ezi nkqubo zisebenza kwii-terahertz frequencies, zibonelela nge-bandwidth engenakulinganiswa yokuhanjiswa kwedatha kunye nonxibelelwano olukhawulezayo. Nangona kunjalo, ukuze kuphunyezwe oku nokwenzeka ngokupheleleyo, imingeni ebalulekileyo yobugcisa kufuneka yoyiswe, ngakumbi ekulawuleni nasekusebenziseni ngempumelelo uluhlu olukhoyo.
Inkqubela phambili ijongene nalo mceli mngeni: i-ultra-wideband yokuqala ehlanganisiweyo ye-terahertz polarization (de) multiplexer efunyenwe kwiqonga le-silicon elingena-substrate.
Olu yilo oluyilayo lujolise kwi-sub-terahertz J band (220-330 GHz) kwaye ijolise ekuguquleni unxibelelwano lwe-6G nangaphezulu. Isixhobo siphinda kabini umthamo wedatha ngelixa sigcina ilahleko yedatha ephantsi, ivula indlela yothungelwano olungenazingcingo olusebenzayo noluthembekileyo.
Iqela elisemva kweli nqanaba libandakanya uNjingalwazi Withawat Withayachumnankul ovela kwiYunivesithi yase-Adelaide yeSikolo soMbane kunye nobuNjineli boMbane, uDkt Weijie Gao, ngoku umphandi we-postdoctoral kwiYunivesithi yase-Osaka, kunye noProfesa Masayuki Fujita.
UNjingalwazi Withayachumnankul uthe, "Ipolarization multiplexer ecetywayo ivumela ukuhanjiswa kwedatha ezininzi ukuba zihanjiswe ngaxeshanye ngaphakathi kwebhendi yefrikhwensi enye, ngokufanelekileyo ukuphinda kabini umthamo wedatha." I-bandwidth ehambelanayo ephunyezwe sisixhobo ayikho ngaphambili kulo naluphi na uluhlu lwamaza, omele umtsi obalulekileyo wokuphindaphinda okudityanisiweyo.
I-Polarization multiplexers ibalulekile kunxibelelwano lwangoku njengoko ivumela imiqondiso emininzi ukwabelana ngebhendi yefrikhwensi efanayo, iphucula kakhulu umthamo wetshaneli.
Isixhobo esitsha sifezekisa oku ngokusebenzisa i-conical directional couplers kunye ne-anisotropic esebenzayo yokuvala okuphakathi. Ezi zixhobo ziphucula i-polarization birefringence, ekhokelela kwi-polarization extinction ratio (PER) kunye ne-wide bandwidth-iimpawu eziphambili zeenkqubo zonxibelelwano ze-terahertz ezisebenzayo.
Ngokungafaniyo noyilo lwemveli oluxhomekeke kwi-asymmetric waveguides entsonkothileyo kunye nokuxhomekeka rhoqo, i-multiplexer entsha isebenzisa i-anisotropic cladding ngokuxhomekeka kancinci kancinci. Le ndlela iwusebenzisa ngokupheleleyo umgama omde obonelelwa zi-conical couplers.
Isiphumo sisiba se-fractional bandwidth ekufutshane ne-40%, i-avareji ye-PER edlula i-20 dB, kunye nelahleko encinci yokufaka malunga ne-1 dB. Ezi metrics zokusebenza zodlula kude ezo zoyilo ezikhoyo kunye noyilo lwe-microwave, oluhlala lunengxaki ye-bandwidth emxinwa kunye nelahleko ephezulu.
Umsebenzi weqela lophando awuphuculi nje ukusebenza kakuhle kweenkqubo ze-terahertz kodwa ukwabeka isiseko sexesha elitsha kunxibelelwano olungenazingcingo. UGqr. Gao uthe, "Olu lutsha lungumqhubi ophambili ekuvuleni amandla onxibelelwano lwe-terahertz." Izicelo zibandakanya ukusasazwa kwevidiyo ephezulu, inyani eyandisiweyo, kunye neenethiwekhi zeselula zesizukulwana esilandelayo njenge6G.
Izisombululo zolawulo lwe-terahertz ye-polarization yemveli, njenge-orthogonal mode transducers (OMTs) esekelwe kwii-rectangular metal waveguides, zijongene nemida ebalulekileyo. Amava e-Metal waveguides andise ilahleko ye-ohmic kumaza aphezulu, kwaye iinkqubo zabo zokwenziwa zintsonkothile ngenxa yeemfuno ezingqongqo zejometri.
I-optical polarization multiplexers, kuquka ezo zisebenzisa i-interferometers ye-Mach-Zehnder okanye i-photonic crystals, zibonelela ngokudityaniswa okungcono kunye nelahleko ephantsi kodwa zihlala zifuna urhwebo phakathi kwe-bandwidth, ukudibanisa, kunye nobunzima bokuvelisa.
I-couplers ye-Directional isetyenziswa ngokubanzi kwiinkqubo ze-optical kwaye ifuna i-polarization eyomeleleyo ye-birefringence ukufezekisa ubungakanani be-compact kunye ne-PER ephezulu. Nangona kunjalo, banqunyelwe yi-bandwidth emxinwa kunye novakalelo ekunyamezelweni kwemveliso.
I-multiplexer entsha idibanisa izibonelelo ze-conical directional couplers kunye ne-cladding esebenzayo ephakathi, ukoyisa le mida. I-anisotropic cladding ibonisa i-birefringence ebalulekileyo, iqinisekisa i-PER ephezulu kwi-bandwidth ebanzi. Lo mgaqo woyilo uphawula ukuhamba kwiindlela zemveli, ukubonelela ngesisombululo esinobunzima nesisebenzayo sokuhlanganiswa kwe-terahertz.
Ukuqinisekiswa kovavanyo lwe-multiplexer kuqinisekisile ukusebenza kwayo okungaqhelekanga. Isixhobo sisebenza ngokufanelekileyo kwi-225-330 GHz uluhlu, ukuphumeza i-bandwidth ye-fractional ye-37.8% ngelixa ugcina i-PER ngaphezu kwe-20 dB. Ubungakanani bayo obudibeneyo kunye nokuhambelana neenkqubo zokuvelisa eziqhelekileyo zenza ukuba zilungele ukuveliswa kobuninzi.
UGqr. Gao wathi, "Olu lutsha aluphuculi nje kuphela ukusebenza kakuhle kweenkqubo zonxibelelwano ze-terahertz kodwa kwakhona kuvula indlela yothungelwano olungenazingcingo olunamandla kunye noluthembekileyo."
Ukusetyenziswa okunokwenzeka kobu buchwepheshe kunabela ngaphaya kweenkqubo zonxibelelwano. Ngokuphucula ukusetyenziswa kwe-spectrum, i-multiplexer inokuqhuba inkqubela phambili kwimimandla efana ne-radar, imaging, kunye ne-Intanethi yeZinto. “Kwisithuba seminyaka elishumi, silindele ukuba obu bugcisa be-terahertz bamkelwe ngokubanzi kwaye zidityaniswe kumashishini ahlukeneyo,” utshilo uNjingalwazi Withayachumnankul.
I-multiplexer inokudityaniswa ngaphandle komthungo kunye nezixhobo zangaphambili zokukhanyisa eziphuhliswe liqela, ivumela unxibelelwano oluphambili olusebenzayo kwiqonga elidityanisiweyo. Oku kuhambelana kugxininisa ukuguquguquka kunye nokulinganisa kweqonga elisebenzayo le-dielectric waveguide eliphakathi.
Iziphumo zophando zeqela ziye zapapashwa kwiphephancwadi iLaser & Photonic Reviews, igxininisa ukubaluleka kwabo ekuqhubeleni phambili iteknoloji ye-photonic terahertz. Unjingalwazi uFujita wathi, "Ngokoyisa imiqobo ebalulekileyo yobugcisa, olu lutsha lulindeleke ukuba lukhuthaze umdla kunye nomsebenzi wophando kwintsimi."
Abaphandi balindele ukuba umsebenzi wabo uya kukhuthaza usetyenziso olutsha kunye nokuphuculwa ngakumbi kwetekhnoloji kwiminyaka ezayo, ekugqibeleni kukhokelela kwiiprototypes zorhwebo kunye neemveliso.
Le multiplexer imele inyathelo elibalulekileyo eliya phambili ekuvuleni amandla onxibelelwano lwe-terahertz. Iseta umgangatho omtsha wezixhobo ezidibeneyo ze-terahertz kunye neemetrics zayo zokusebenza ezingazange zibonwe ngaphambili.
Njengoko imfuno yesantya esiphezulu, uthungelwano lonxibelelwano oluphezulu luqhubeka nokukhula, ezo zinto zintsha ziya kudlala indima ebalulekileyo ekubumbeni ikamva lobuchwepheshe obungenazingcingo.
Ixesha lokuposa: Dec-16-2024