Ibhendi itsva ye ultra-wideband 997GHzmodulator yemagetsi-optic
Modulator itsva ye ultra-wideband electro-optic yaisa rekodhi yebandwidth ye997GHz
Munguva pfupi yapfuura, chikwata chevatsvagiri muZurich, Switzerland, chakabudirira kugadzira modulator ye electro-optic ye ultra-wideband inoshanda pamafrequencies anotangira pa10 MHz kusvika 1.14 THz, ichiisa rekodhi ye bandwidth ye 3 dB pa 997 GHz, inova rekodhi yakapetwa kaviri pane iripo pari zvino. Kubudirira uku kunokonzerwa nekugadzirwa kwakanaka kwema plasma modulators, zvichivhura nzvimbo itsva yeramangwana re terahertz photonic integrated circuits (PICs).
Parizvino, kutaurirana kusina waya kunonyanya kushandisa ma microwave nema millimeter waves, asi zviwanikwa zvema frequency bands aya zvagara zvakazara. Kunyangwe kutaurirana kwe optical kune bandwidth yakakura, haigone kushandiswa zvakananga pakutumira waya munzvimbo yakasununguka. Nokudaro, kutaurirana kwe THz kunoonekwa se "bhiriji regoridhe" rinobatanidza network dzisina waya ne fiber-optic, zvichipa mhinduro yakanaka kune 6G uye masisitimu ekukurukurirana ane mwero wepamusoro. Dambudziko riri pakuti mashandiro ema electro-optic modulators aripo (akadai semodulator yeLiNbO₃, InGaAs, uye zvinhu zvakagadzirwa nesilicon) mubhendi reTHz frequency hazvina kukwana. Kudzikira kwechiratidzo kuri pachena. Bandwidth inoshanda inongosvika 14 GHz uye frequency yepamusoro yekutakura i100 GHz chete, izvo zviri kure nekusangana nezvinodiwa pakutaurirana kweTHz. Muchinyorwa chino, vaongorori vakagadzira modulator itsva yeplasma, vachiwedzera bandwidth ye3 dB kusvika 997 GHz, inova yakapetwa kaviri pane iripo, sezvakaratidzwa muMufananidzo 1. Kubudirira uku hakungoputsi chete miganhu yetekinoroji yechinyakare asiwo kunowedzera nzira yekuvandudzwa kwekutaurirana kweTHz mune ramangwana!
Mufananidzo 1: Plasma electro-optic modulator ine bandwidth yeTHz
Kubudirira kukuru kwemhando itsva iyi yemodulator kuri mu tekinoroji yepamusoro inonzi "plasma effect". Fungidzira kuti kana chiedza chikapenya pamusoro pechinhu chesimbi, chinowirirana nemaerekitironi ari muchinhu chacho - maerekitironi anotenderera pamwe chete achifambiswa nechiedza, zvichigadzira rudzi rwakakosha rwemafungu. Kuchinja-chinja uku ndiko kunogonesamodulatorkuti ishandise masaini ekuona nekushanda kwakanyanya. Zvakabuda mukuyedza zvinoratidza kuti modulator inoratidza hunhu hwakanaka hwemodulation mukati meDC (direct current) kusvika 1.14 THz uye ine stable gain mufrequency band ye500 GHz kusvika 800 GHz.
Kuti vanyatsoongorora mashandiro emodulator, timu yekutsvagisa yakagadzira modhi yedunhu rakaenzana uye yakaongorora simba remagadzirirwo akasiyana emodhi pakushanda kwemodhi kuburikidza nesimulation. Mhedzisiro yekuyedza inoenderana zvakanaka nemodhi yedzidziso, zvichisimbisa kushanda zvakanaka uye kugadzikana kwemodhi. Pamusoro pezvo, vaongorori vakapa hurongwa hwekuvandudza. Zvinotarisirwa kuti kuburikidza nekugadzirwa kwakagadziriswa, frequency yekushanda kwemodhi iyi inogona kupfuura 1THz mune ramangwana, uye kunyange kusvika pamusoro pe2THz!
Chidzidzo ichi chinoratidza kugona kukuru kweplasmamamodulator emagetsi-opticmukutaurirana kweTHz uye ma photonic integrated circuits (PICs). Mudziyo uyu, une hunhu hwawo hwe ultra-wideband, kushanda zvakanaka uye kubatanidzwa, unopa mhinduro itsva yeTHz signal modulation. Mune ramangwana, nekuwedzerwa kwekugadzirisa kwekugadzirwa kwemidziyo uye maitiro ekugadzira, frequency yekushanda kwema plasma modulators inotarisirwa kudarika 2 THz, zvichiwana data rates yakakwira uye spectrum coverage yakafara. Kuuya kwenguva yeTHz hakurevi chete kutumira data nekukurumidza uye kugona kwakarurama kwekunzwa, asiwo kuchasimudzira kubatanidzwa kwakadzama kweminda yakawanda senge wireless communication, optical computing, uye intelligent detection. Kubudirira kwema plasma electro-optic modulators kunogona kuva danho guru rinotungamira kukura kwetekinoroji yeTHz, zvichipa hwaro hwekubatana nekukurumidza kwesangano reruzivo remangwana.
Nguva yekutumira: Chikumi-09-2025