997GHz ultra-wideband ọhụrụelectrooptic modulator
Ihe ọhụrụ ultra-wideband electro-optic modulator ewepụtala ndekọ bandwidth nke 997GHz
N'oge na-adịbeghị anya, otu ndị nyocha na Zurich, Switzerland, enweela ihe ịga nke ọma n'ịmepụta ultra-wideband electro-optic modulator nke na-arụ ọrụ ugboro ugboro sitere na 10 MHz ruo 1.14 Hz, na-edekọ ndekọ bandwidth 3 dB na 997 GHz, nke bụ ihe ndekọ ugboro abụọ ugbu a. A na-ekwu na ọganihu a bụ nke kachasị mma nke ndị modulators plasma, na-emepe oghere ọhụrụ maka sekit terahertz photonic Integrated (PICs).
Ka ọ dị ugbu a, nkwurịta okwu ikuku na-adabere na microwaves na ebili mmiri millimita, mana akụrụngwa dị iche iche nke eriri ugboro ndị a adịlarị jupụta. Ọ bụ ezie na nkwurịta okwu anya nwere nnukwu bandwidth, enweghị ike iji ya ozugbo maka nnyefe ikuku na oghere efu. Ya mere, a na-ewere nkwurịta okwu THz dị ka "akwa ọla edo" na-ejikọta netwọk ikuku na fiber optic, na-enye ngwọta dị mma maka 6G na usoro nkwurịta okwu dị elu. Nsogbu a bụ na arụrụ ọrụ nke ndị modul eletrọ-optic dị (dị kaLiNbO₃ modulator, InGaAs, na ihe ndị dabeere na silicon) n'ime eriri ugboro THz ezughi oke. Mbelata mgbaàmà pụtara ìhè. bandwidth na-arụ ọrụ bụ naanị ihe dị ka 14 GHz na ugboro ole na-ebu ibu bụ naanị 100 GHz, nke na-adịghị agafe ụkpụrụ achọrọ maka nkwukọrịta THz. N'isiokwu a, ndị nchọpụta emepụtawo modulator ọhụrụ nke dabeere na plasma, nke ọma na-amụba 3 dB bandwit na 997 GHz, nke bụ okpukpu abụọ nke ndekọ ugbu a, dị ka e gosiri na Figure 1. Ọganihu a abụghị nanị na-agbaji njedebe nke nkà na ụzụ omenala ma na-agbasawanye ụzọ maka ọdịnihu mmepe nke nkwurịta okwu THz!
Ọgụgụ 1 Plasma electro-optic modulator nwere bandwit THz
Isi mmalite nke ụdị modulator ọhụrụ a dị na teknụzụ dị elu a na-akpọ "plasma effect". Were ya na mgbe ìhè na-enwu n'elu igwe nanostructure metal, ọ na-adaba na electrons n'ime ihe - electrons na-agbakọta ọnụ site n'ìhè, na-akpụ ụdị ebili mmiri pụrụ iche. Ọ bụ kpọmkwem mgbanwe a na-enyere ndịmodulatoriji arụ ọrụ dị oke elu na-emegharị akara ngosi anya. Nsonaazụ nnwale na-egosi na modulator na-egosipụta njirimara modulation dị mma n'ime oke DC (ugbu a kpọmkwem) na 1.14 THZ ma nwee uru kwụsiri ike na eriri ugboro nke 500 GHz ruo 800 GHz.
Iji mụọ usoro ọrụ nke modulator nke ọma, ndị otu nyocha ahụ rụpụtara usoro sekit zuru ezu ma nyochaa mmetụta nke usoro nhazi dị iche iche na arụmọrụ nke modulator site na simulation. Nsonaazụ nnwale ahụ dị na nkwekọrịta dị mma na usoro ihe atụ, na-enyochakwu arụmọrụ na nkwụsi ike nke modulator. Na mgbakwunye, ndị nchọpụta atụpụtala atụmatụ nkwalite. A na-atụ anya na site na nhazi kachasị mma, ugboro ole na-arụ ọrụ nke modulator nwere ike gafere 1THz n'ọdịnihu, na ọbụna ruo ihe karịrị 2THz!
Ọmụmụ ihe a gosipụtara nnukwu ikike nke plasmaelectrooptic modulatorsna nkwurịta okwu THz na fotonic integrated circuits (PICs). Ngwaọrụ a, yana njirimara ya nke ultra-wideband, arụmọrụ dị elu na njikọta, na-enye ihe ngwọta ọhụrụ maka mgbama THz. N'ọdịniihu, site n'ịkwalite nhazi ngwaọrụ na usoro nrụpụta, a na-atụ anya na oge ọrụ nke modulators plasma ga-agafe 2 THz, na-enweta ọnụego data dị elu yana mkpuchi ụdịdị dị iche iche. Ọbịbịa nke oge THz abụghị naanị pụtara nnyefe data ngwa ngwa yana ikike nghọta ziri ezi karị, kamakwa ọ ga-akwalite njikọ miri emi nke ọtụtụ ubi dịka nzikọrịta ozi ikuku, mgbako ngwa anya, na nchọpụta ọgụgụ isi. Ọganihu nke plasma electro-optic modulators nwere ike bụrụ nzọụkwụ dị mkpa na-eduga mmepe nke teknụzụ THz, na-enye ntọala maka njikọta ọsọ ọsọ nke ọha mmadụ ozi n'ọdịnihu.
Oge nzipu: Jun-09-2025