I-modulator entsha ye-electro-optic engu-997GHz ene-ultra-wideband entsha

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

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

Muva nje, ithimba labacwaningi eZurich, eSwitzerland, liphumelele ukuthuthukisa i-modulator ye-electro-optic ye-ultra-wideband esebenza ngamaza asukela ku-10 MHz kuya ku-1.14 THz, ibeka irekhodi le-bandwidth elingu-3 dB ku-997 GHz, okuyirekhodi eliphindwe kabili kunamanje. Lokhu kuphumelela kubangelwa ukwakheka okuhle kwama-plasma modulators, okuvula isikhala esisha sha sama-satellite ahlanganisiwe e-terahertz photonic (ama-PIC) esizayo.

Njengamanje, ukuxhumana okungenantambo kuncike kakhulu kuma-microwave namagagasi e-millimeter, kodwa izinsiza ze-spectrum zala ma-frequency band zivame ukugcwala. Nakuba ukuxhumana kwe-optical kune-bandwidth enkulu, akunakusetshenziswa ngqo ekudluliseni okungenantambo endaweni ekhululekile. Ngakho-ke, ukuxhumana kwe-THZ kubhekwa njenge-"ibhuloho legolide" elixhumanisa amanethiwekhi angenantambo kanye ne-fiber-optic, okunikeza ikhambi elifanele lezinhlelo zokuxhumana ze-6G kanye nezinga eliphezulu. Inkinga ilele ekusebenzeni kwama-modulators e-electro-optic akhona (njenge-I-modulator ye-LiNbO₃, i-InGaAs, kanye nezinto ezisekelwe ku-silicon) kubhendi yemvamisa ye-THz akwanele nhlobo. Ukuncipha kwesignali kusobala. I-bandwidth esebenzayo ingama-14 GHz kuphela kanti imvamisa ephezulu yokuthwala ingama-100 GHz kuphela, okukude kakhulu nokuhlangabezana nezindinganiso ezidingekayo zokuxhumana nge-THz. Kulesi sihloko, abacwaningi bathuthukise i-modulator entsha esekelwe ku-plasma, bakhulisa ngempumelelo i-bandwidth engu-3 dB ibe yi-997 GHz, okuyirekhodi eliphindwe kabili kunamanje, njengoba kuboniswe kuMfanekiso 1. Lokhu kuphumelela akugcini nje ngokuphula imikhawulo yobuchwepheshe bendabuko kodwa futhi kwandisa indlela yokuthuthukiswa kwesikhathi esizayo kokuxhumana nge-THz!

Umfanekiso 1 I-Plasma electro-optic modulator ene-bandwidth ye-THz

Impumelelo eyinhloko yalolu hlobo olusha lwe-modulator itholakala kubuchwepheshe obuphezulu obubizwa ngokuthi “umphumela we-plasma”. Cabanga ukuthi lapho ukukhanya kukhanya ebusweni besakhiwo sensimbi esincane, kuzwakala nama-electron asematheni – ama-electron anyakaza ndawonye eqhutshwa ukukhanya, akha uhlobo olukhethekile lwegagasi. Yilokhu kuguquguquka okuvumela i-i-modulatorukuphatha izimpawu zokukhanya ngokusebenza kahle kakhulu. Imiphumela yokuhlola ikhombisa ukuthi i-modulator ibonisa izici ezinhle zokuguquguquka ngaphakathi kobubanzi be-DC (ugesi oqondile) kuya ku-1.14 THz futhi inokukhula okuzinzile kubhendi yemvamisa engu-500 GHz kuya ku-800 GHz.

Ukuze bafunde ngokujulile indlela yokusebenza kwe-modulator, ithimba locwaningo lakha imodeli yesekethe elinganayo enemininingwane futhi lahlaziya ithonya lamapharamitha esakhiwo ahlukene ekusebenzeni kwe-modulator ngokulingisa. Imiphumela yokuhlola iyavumelana kahle nemodeli yethiyori, okuqinisekisa ukusebenza kahle nokuzinza kwe-modulator. Ngaphezu kwalokho, abacwaningi baphakamise uhlelo lokuthuthukisa. Kulindeleke ukuthi ngomklamo olungiselelwe, imvamisa yokusebenza yale modulator ingadlula i-1THz esikhathini esizayo, futhi ifinyelele ngisho nangaphezu kwe-2THz!

Lolu cwaningo lubonisa amandla amakhulu e-plasmaama-modulators e-electro-opticekuxhumaneni kwe-THz kanye namasekethe ahlanganisiwe e-photonic (ama-PIC). Le divayisi, enezici zayo ze-ultra-wideband, ukusebenza kahle okuphezulu kanye nokuhlanganiswa, inikeza ikhambi elisha sha lokuguqulwa kwesignali ye-THz. Esikhathini esizayo, ngokuthuthukiswa okuqhubekayo kwezinqubo zokuklama nokukhiqiza idivayisi, imvamisa yokusebenza kwama-plasma modulator kulindeleke ukuthi idlule i-2 THz, ifinyelele amazinga aphezulu edatha kanye nokumbozwa kwe-spectrum ebanzi. Ukufika kwenkathi ye-THz akusho nje kuphela ukudluliswa kwedatha okusheshayo kanye namakhono okuzwa anembile kakhudlwana, kodwa futhi kuzokhuthaza ukuhlanganiswa okujulile kwezinkambu eziningi njengokuxhumana okungenantambo, i-optical computing, kanye nokutholwa okuhlakaniphile. Ukuphumelela kwama-plasma electro-optic modulator kungaba yisinyathelo esibalulekile esiholela ekuthuthukisweni kobuchwepheshe be-THz, okuhlinzeka ngesisekelo sokuxhumana okusheshayo komphakathi wolwazi wesikhathi esizayo.