ʻO ka ultra-wideband hou 997GHzelectro-optic modulator
Ua hoʻonohonoho kahi modulator electro-optic ultra-wideband hou i kahi moʻolelo bandwidth o 997GHz
I kēia mau lā, ua hoʻomohala maikaʻi kahi hui noiʻi ma Zurich, Switzerland, i kahi modulator electro-optic ultra-wideband e hana ana ma nā alapine mai 10 MHz a i 1.14 THz, e hoʻonohonoho ana i kahi moʻolelo bandwidth 3 dB ma 997 GHz, ʻo ia ka pālua o ka moʻolelo o kēia manawa. Hāʻawi ʻia kēia holomua i ka hoʻolālā ʻana o nā modulator plasma, e wehe ana i kahi wahi hou no nā terahertz photonic integrated circuits (PICs) e hiki mai ana.
I kēia manawa, hilinaʻi nui ke kamaʻilio uea i nā microwaves a me nā nalu millimeters, akā ʻo nā kumu kikoʻī o kēia mau ala alapine e maʻa mau. ʻOiai he bandwidth nui ke kamaʻilio optical, ʻaʻole hiki ke hoʻohana pololei ʻia no ka hoʻouna ʻole ʻole ʻana ma kahi ākea. No laila, ua manaʻo ʻia ke kamaʻilio ʻo THz ʻo ia ka "alahaka gula" e hoʻopili ana i nā ʻupena uila a me ka fiber-optic, e hāʻawi ana i kahi hopena kūpono no 6G a me nā ʻōnaehana kamaʻilio kiʻekiʻe. Aia ka pilikia i ka hana ʻana o nā modulator electro-optic (e like meLiNbO₃ modulator, InGaAs, a me nā mea pili kilika) i ka THz frequency band i mamao loa mai ka lawa. ʻIke ʻia ka attenuation hōʻailona. ʻO ka bandwidth hana wale nō ma kahi o 14 GHz a ʻo 100 GHz wale nō ka mea lawe nui loa, kahi mamao loa mai ka hoʻokō ʻana i nā kūlana i koi ʻia no ke kamaʻilio THz. Ma kēiaʻatikala, ua hoʻomohala nā mea noiʻi i kahi modulator plasma hou, e hoʻonui ana i ka bandwidth 3 dB i 997 GHz, ʻo ia ka pālua o ka moʻolelo o kēia manawa, e like me ka mea i hōʻike ʻia ma ka Figure 1. ʻAʻole kēia holomua e uhaʻi i nā palena o nā ʻenehana kuʻuna akā ua hoʻonui pū i ke ala no ka hoʻomohala ʻana o ke kamaʻilio THz e hiki mai ana!
Kiʻi 1 Plasma electro-optic modulator me THz bandwidth
ʻO ka holomua nui o kēia ʻano modulator hou aia i ka ʻenehana kiʻekiʻe i kapa ʻia ʻo "plasma effect". E noʻonoʻo ʻoe i ka wā e ʻā mai ai ka mālamalama i ka ʻili o kahi nanostructure metala, e hoʻopiʻi ʻo ia me nā electrons i loko o ka mea - nā electrons oscillate hui pū ʻia e ka mālamalama, e hana ana i kahi ʻano nalu kūikawā. ʻO kēia ka fluctuation ka mea e hiki ai i kamea hoʻololie hoʻopunipuni i nā hōʻailona optical me ka hana kiʻekiʻe loa. Hōʻike nā hopena hoʻokolohua e hōʻike ana ka modulator i nā hiʻohiʻona modulation maikaʻi i loko o ka laulā o DC (direct current) a hiki i 1.14 THz a loaʻa i ka loaʻa paʻa ma ke alapine o 500 GHz a 800 GHz.
No ke aʻo hohonu ʻana i ke ʻano hana o ka modulator, ua kūkulu ka hui noiʻi i kahi kikoʻī kikoʻī kikoʻī like a nānā i ka mana o nā ʻāpana hoʻolālā like ʻole i ka hana o ka modulator ma o ka simulation. ʻO nā hopena hoʻokolohua i ʻaelike maikaʻi me ke kumu hoʻohālike, e hōʻoia hou ana i ka pono a me ka paʻa o ka modulator. Eia hou, ua noi nā mea noiʻi i kahi hoʻolālā hoʻomaikaʻi. Manaʻo ʻia ma o ka hoʻolālā i hoʻolālā ʻia, hiki i ke alapine hana o kēia modulator ke ʻoi aku ma mua o 1THz i ka wā e hiki mai ana, a hiki i ka 2THz!
Hōʻike kēia haʻawina i ka mana nui o ka plasmaelectro-optic modulatorsi ke kamaʻilio THz a me nā kaapuni hoʻohui photonic (PIC). ʻO kēia hāmeʻa, me kāna mau hiʻohiʻona o ka ultra-wideband, kiʻekiʻe kiʻekiʻe a me ka integrability, hāʻawi i kahi hopena hou no ka modulation hōʻailona THz. I ka wā e hiki mai ana, me ka hoʻonui hou ʻana i ka hoʻolālā ʻana o nā mea hana a me nā kaʻina hana, ʻoi aku ka nui o ka hana o nā modulators plasma e ʻoi aku ma mua o 2 THz, e loaʻa ana i nā helu ʻikepili kiʻekiʻe a me ka uhi ākea ākea. ʻO ka hiki ʻana mai o ke au THz ʻaʻole wale ke ʻano o ka hoʻouna ʻana i ka ʻikepili wikiwiki a me ka hiki ke ʻike pololei, akā e hoʻolaha pū i ka hoʻohui hohonu ʻana o nā kahua he nui e like me ke kamaʻilio uea ʻole, ka ʻike kamepiula, a me ka ʻike naʻauao. ʻO ka holomua o ka plasma electro-optic modulators hiki ke lilo i mea koʻikoʻi e alakaʻi i ka hoʻomohala ʻana o ka ʻenehana THz, e hāʻawi ana i kumu no ka pilina kiʻekiʻe o ka hui ʻike e hiki mai ana.
Ka manawa hoʻouna: Jun-09-2025