Lilemong tsa morao tjena, bafuputsi ba tsoang linaheng tse fapaneng ba sebelisitse li-photonics tse kopantsoeng ho lemoha ka tatellano ho qhekella ha maqhubu a khanya ea infrared le ho a sebelisa ho marang-rang a 5G a lebelo le phahameng, li-chip sensors le likoloi tse ikemetseng. Hajoale, ka ho teba ho tsoelang pele ha tataiso ena ea lipatlisiso, bafuputsi ba se ba qalile ho fumana ka botebo lihlopha tse khuts'oane tse bonahalang tsa leseli le ho hlahisa lisebelisoa tse pharaletseng, tse kang chip-level LIDAR, AR / VR / MR (ntlafatso / virtual / hybrid) Reality) Likhalase, holographic displays, quantum processing chips, optogenetic probes tse kentsoeng bokong, joalo-joalo.
Khokahano e kholo ea li-modulators tsa optical phase ke motheo oa sistimi ea optical bakeng sa on-chip optical routing le sebopeho sa maqhubu a sebaka sa mahala. Mesebetsi ena e 'meli ea mantlha e bohlokoa bakeng sa ho phethahatsa lits'ebetso tse fapaneng. Leha ho le joalo, bakeng sa li-modulator tsa optical phase ka har'a leseli le bonahalang, ho thata haholo ho fihlela litlhoko tsa phetisetso e phahameng le ho feto-fetoha ha maemo ka nako e le 'ngoe. Ho fihlela tlhokahalo ena, esita le lisebelisoa tse loketseng tsa silicon nitride le lithium niobate li hloka ho eketsa molumo le tšebeliso ea matla.
Ho rarolla bothata bona, Michal Lipson le Nanfang Yu oa Univesithi ea Columbia ba ile ba etsa silicon nitride thermo-optic phase modulator e thehiloeng ho adiabatic micro-ring resonator. Ba ile ba paka hore micro-ring resonator e sebetsa boemong bo matla ba ho kopanya. Sesebelisoa se ka finyella ho feto-fetoha ha mekhahlelo ka tahlehelo e fokolang. Ha ho bapisoa le li-modulator tse tloaelehileng tsa waveguide phase, sesebelisoa se na le bonyane taelo ea ho fokotsa boholo ba sebaka le tšebeliso ea matla. Litaba tse amanang li phatlalalitsoe ho Nature Photonics.
Michal Lipson, setsebi se ka sehloohong lefapheng la li-photonics tse kopantsoeng, tse thehiloeng ho silicon nitride, o itse: "Senotlolo sa tharollo ea rona e reriloeng ke ho sebelisa resonator ea optical le ho sebetsa sebakeng seo ho thoeng ke ho kopanya ho matla."
Resonator ea optical ke sebopeho se nang le symmetrical haholo, se ka fetolang phetoho e nyenyane ea refractive index hore e be phetoho ea mohato ka mekhahlelo e mengata ea mahlaseli a khanyang. Ka kakaretso, e ka aroloa ka likarolo tse tharo tse fapaneng tse sebetsang: "tlas'a ho kopanya" le "tlas'a ho kopanya." Khokahano e mahlonoko” le “kopano e matla.” Har'a bona, "tlas'a ho kopanya" ho ka fana ka mokhoa o lekanyelitsoeng oa ho feto-fetoha ha mekhahlelo 'me ho tla hlahisa liphetoho tse sa hlokahaleng tsa amplitude,' me "coupling ea bohlokoa" e tla baka tahlehelo e kholo ea optical, kahoo e ama ts'ebetso ea sebele ea sesebelisoa.
Ho fihlela phetoho e felletseng ea 2π le phetoho e nyane ea amplitude, sehlopha sa lipatlisiso se ile sa theola microring ka boemo ba "kopano e matla". Matla a ho kopanya pakeng tsa microring le "bese" ke bonyane makhetlo a leshome ho feta tahlehelo ea microring. Ka mor'a letoto la liqapi le ho ntlafatsa, sebopeho sa ho qetela se bontšoa setšoantšong se ka tlase. Ena ke lesale la resonant le bophara ba tapered. Karolo e moqotetsane ea waveguide e ntlafatsa matla a ho kopanya optical pakeng tsa "bese" le micro-coil. Karolo e pharaletseng ea waveguide Ho lahleheloa ke leseli la microring ho fokotsehile ka ho fokotsa ho hasana ha optical ea lebota la mahlakoreng.
Heqing Huang, sengoli sa pele sa pampiri ena, le eena o itse: “Re entse modulator e nyenyane, e bolokang matla, le ea tahlehelo e tlaase haholo e bonahalang e nang le radius ea 5 μm feela le π-phase modulation modulation modulation e sebelisa feela. 0.8 mW. Phapang e hlahisitsoeng ea amplitude e ka tlase ho 10%. Ntho e sa tloaelehang ke hore modulator ena e sebetsa ka tsela e tšoanang bakeng sa lihlopha tse thata ka ho fetisisa tse putsoa le tse tala ka har'a spectrum e bonahalang. "
Nanfang Yu o ile a boela a bontša hore le hoja ba le hōle le ho fihla boemong ba ho kopanya lihlahisoa tsa elektronike, mosebetsi oa bona o fokolitse ka mokhoa o tsotehang lekhalo pakeng tsa li-switch tsa photonic le li-switches tsa elektronike. "Haeba theknoloji ea nakong e fetileng ea modulator e ne e lumella feela ho kopanngoa ha li-modulator tse 100 tse fanoeng ka tekanyo e itseng ea chip le tekanyetso ea matla, joale re ka kopanya li-modulator tse 10,000 ho chip e le 'ngoe ho finyella Mosebetsi o rarahaneng haholoanyane."
Ka bokhutšoanyane, mokhoa ona oa moralo o ka sebelisoa ho li-modulator tsa electro-optic ho fokotsa sebaka se tšoaretsoeng le tšebeliso ea motlakase. E ka boela ea sebelisoa likarolong tse ling tsa spectral le meralo e meng e fapaneng ea li-resonator. Hajoale, sehlopha sa bafuputsi se sebelisana 'moho ho bonts'a sekhahla se bonahalang sa LIDAR se entsoeng ka li-phase shifter arrays tse thehiloeng ho li-microring tse joalo. Nakong e tlang, e ka boela ea sebelisoa lits'ebetsong tse ngata tse kang ntlafatso ea optical nonlinearity, lasers e ncha, le lisebelisoa tse ncha tsa quantum Optical.
Mohloli oa sengoloa: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
Beijing Rofea Optoelectronics Co., Ltd. e fumanehang "Silicon Valley" ea China - Beijing Zhongguancun, ke khoebo ea theknoloji e phahameng e ikemiselitseng ho sebeletsa litsi tsa lipatlisiso tsa malapeng le tsa kantle ho naha, litsi tsa lipatlisiso, liunivesithi le basebetsi ba likhoebo tsa lipatlisiso tsa mahlale. Khamphani ea rona e ikakhetse ka setotsoana lipatlisisong tse ikemetseng le nts'etsopele, moralo, tlhahiso, thekiso ea lihlahisoa tsa optoelectronic, 'me e fana ka litharollo tse ncha le lits'ebeletso tse ikhethileng bakeng sa bafuputsi ba mahlale le baenjiniere ba indasteri. Ka mor'a lilemo tse ngata tsa boipheliso bo ikemetseng, e thehile letoto le ruileng le le phethahetseng la lihlahisoa tsa photoelectric, tse sebelisoang haholo ho masepala, sesole, lipalangoang, matla a motlakase, lichelete, thuto, bongaka le liindasteri tse ling.
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Nako ea poso: Mar-29-2023