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

I-ultra-wideband entsha engu-997GHzi-electro-optic module

I-Ultra-wideband electro-optic modulator entsha isethe irekhodi lomkhawulokudonsa ongu-997GHz

Muva nje, ithimba labacwaningi e-Zurich, eSwitzerland, lenze ngempumelelo i-ultra-wideband electro-optic modulator esebenza kumafrikhwensi asuka ku-10 MHz kuya ku-1.14 THz, ebeka irekhodi lomkhawulokudonsa ongu-3 dB ku-997 GHz, okuyirekhodi eliphindwe kabili kunerekhodi lamanje. Lokhu kuphumelela kudalwe ukwakhiwa okuthuthukisiwe kwamamoduli e-plasma, okuvula indawo entsha sha yamasekhethi ahlanganisiwe e-terahertz photonic (PICs).

Njengamanje, ukuxhumana okungenantambo kuncike kakhulu kuma-microwave nama-millimeter amaza, kodwa izinsiza ze-spectrum zalawa mabhendi amafrikhwensi avame ukugcwala. Nakuba ukuxhumana okubonakalayo kunomkhawulokudonsa omkhulu, angeke kusetshenziselwe ngqo ukudluliswa okungenantambo endaweni yamahhala. Ngakho-ke, ukuxhumana kwe-THz kuthathwa ngokuthi "ibhuloho legolide" elixhuma amanethiwekhi angenantambo kanye ne-fiber-optic, ehlinzeka ngesixazululo esikahle se-6G kanye nezinhlelo zokuxhumana eziphezulu. Inkinga ilele ekutheni ukusebenza kwama-modulators akhona e-electro-optic (njengaI-LiNbO₃ module, InGaAs, kanye nezinto ezisekelwe ku-silicon) ebhendini yefrikhwensi ye-THz akwanele. Ukuncishiswa kwesignali kusobala. Umkhawulokudonsa osebenzayo ucishe ube ngu-14 GHz kuphela futhi imvamisa yenkampani yenethiwekhi yi-100 GHz kuphela, okude kakhulu nokuhlangabezana namazinga adingekayo ekuxhumaneni kwe-THz. Kulesi sihloko, abacwaningi baye bahlakulela i-modulator entsha esekelwe ku-plasma, bakhulisa ngempumelelo umkhawulokudonsa we-3 dB ku-997 GHz, okuyirekhodi eliphindwe kabili lamanje, njengoba kuboniswe kuMfanekiso 1. Lokhu kuphumelela akuphuli nje kuphela ukulinganiselwa kobuchwepheshe bendabuko kodwa futhi kwandisa indlela yokuthuthukiswa kwesikhathi esizayo kokuxhumana kwe-THz!

Umfanekiso 1 Imoduli ye-Plasma electro-optic enomkhawulokudonsa we-THz

Impumelelo eyinhloko yalolu hlobo olusha lwemoduli ilele kubuchwepheshe obuphezulu obubizwa ngokuthi “umphumela we-plasma”. Cabanga ukuthi lapho ukukhanya kukhanya ebusweni be-nanostructure yensimbi, kuhlangana nama-electron entweni - ama-electron azulazula ngokuhlanganyela aqhutshwa ukukhanya, enza uhlobo olukhethekile lwamagagasi. Yilokhu kuguquguquka kanye okwenza i-imoduliukuguqula amasignali okubona ngokusebenza kahle okuphezulu kakhulu. Imiphumela yokuhlola ibonisa ukuthi imoduli ibonisa izici ezinhle zokuguquguquka phakathi kwebanga le-DC (yamanje eqondile) ukuya ku-1.14 THz futhi inenzuzo ezinzile kubhendi yefrikhwensi engu-500 GHz ukuya ku-800 GHz.

Ukutadisha ngokujulile indlela yokusebenza yemoduli, ithimba locwaningo lakhe imodeli yesekethe enemininingwane elinganayo futhi lahlaziya umthelela wamapharamitha wesakhiwo ahlukene ekusebenzeni kwemoduli ngokulingisa. Imiphumela yokuhlolwa ivumelana kahle nemodeli yetiyetha, iqinisekisa futhi ukusebenza kahle nokuzinza kwemojuli. Ngaphezu kwalokho, abacwaningi bahlongoze uhlelo lokuthuthukisa. Kulindeleke ukuthi ngomklamo olungiselelwe, imvamisa yokusebenza yale moduli ingadlula u-1THz ngokuzayo, futhi ifinyelele nangaphezu kuka-2THz!

Lolu cwaningo lubonisa amandla amakhulu e-plasmaama-modulators e-electro-opticku-THz ukuxhumana namasekethe ahlanganisiwe wezithombe (PICs). Le divayisi, enezici zayo ze-ultra-wideband, ukusebenza kahle okuphezulu nokuhlanganiswa, inikeza isisombululo esisha sha sokushintshwa kwesignali ye-THz. Ngokuzayo, ngokuthuthukiswa okwengeziwe komklamo wedivayisi nezinqubo zokukhiqiza, imvamisa yokusebenza kwamamoduli e-plasma kulindeleke ukuthi idlule u-2 THz, kuzuzwe amanani edatha aphezulu kanye nokufakwa kwe-spectrum ebanzi. Ukufika kwenkathi ye-THz akusho nje ukudluliswa kwedatha okusheshayo namandla okuzwa anembe kakhudlwana, kodwa futhi kuzokhuthaza ukuhlanganiswa okujulile kwezinkambu eziningi ezifana nokuxhumana okungenantambo, i-optical computing, kanye nokutholwa okuhlakaniphile. Ukuphumelela kwe-plasma electro-optic modulators kungase kube isinyathelo esibalulekile esiholela ekuthuthukisweni kobuchwepheshe be-THz, okuhlinzeka ngesisekelo sokuxhumanisa ngesivinini esiphezulu somphakathi wolwazi wesikhathi esizayo.