Lilemong tsa morao tjena, bafuputsi ba tsoang linaheng tse fapaneng ba sebelisitse li-photonics tse kopantsoeng ho hlokomela ka ho latellana ho tsamaisoa ha maqhubu a leseli la infrared le ho a sebelisa marang-rang a lebelo le phahameng la 5G, li-sensor tsa chip, le likoloi tse ikemetseng. Hona joale, ka ho teba ho tsoelang pele ha tataiso ena ea lipatlisiso, bafuputsi ba qalile ho etsa tlhahlobo e tebileng ea lihlopha tse khutšoanyane tsa leseli tse bonahalang le ho nts'etsapele lits'ebetso tse pharaletseng, joalo ka likhalase tsa CHIP-level LIDAR, AR/VR/MR (e ntlafalitsoeng/e hlakileng/e kopantsoeng) Reality), lipontšo tsa holographic, li-chip tsa quantum processing, li-probe tsa optogenetic tse kentsoeng bokong, jj.
Ho kopanngoa ho hoholo ha li-modulator tsa mohato oa optical ke motheo oa sistimi e nyane ea optical bakeng sa ho tsamaisa optical ka har'a chip le ho bopa maqhubu a sebaka se lokolohileng. Mesebetsi ena e 'meli ea mantlha ea bohlokoa bakeng sa ho phethahatsa lits'ebetso tse fapaneng. Leha ho le joalo, bakeng sa li-modulator tsa mohato oa optical tse sebakeng sa khanya e bonahalang, ho thata haholo ho fihlela litlhoko tsa phetisetso e phahameng le modulation e phahameng ka nako e le' ngoe. Ho fihlela tlhoko ena, esita le thepa e loketseng ka ho fetisisa ea silicon nitride le lithium niobate e hloka ho eketsa bophahamo le tšebeliso ea matla.
Ho rarolla bothata bona, Michal Lipson le Nanfang Yu ba Univesithi ea Columbia ba entse modulator ea thermo-optic ea silicon nitride e thehiloeng ho resonator ea micro-ring ea adiabatic. Ba pakile hore resonator ea micro-ring e sebetsa boemong bo matla ba ho kopanya. Sesebelisoa se ka fihlella modulation ea phase ka tahlehelo e nyane. Ha se bapisoa le li-modulator tse tloaelehileng tsa phase ea waveguide, sesebelisoa se na le bonyane phokotso ea boholo ba sebaka le tšebeliso ea matla. Litaba tse amanang le tsona li phatlalalitsoe ho Nature Photonics.
Michal Lipson, setsebi se ka sehloohong lefapheng la difotoniki tse kopaneng, tse itshetlehileng hodima silicon nitride, o itse: “Senotlolo sa tharollo ya rona e sisintsweng ke ho sebedisa resonator ya optical le ho sebetsa boemong bo bitswang ba ho kopanya ho matla.”
Resonator ea optical ke sebopeho se lekanang haholo, se ka fetolang phetoho e nyane ea index ea refractive hore e be phetoho ea mohato ka lipotoloho tse ngata tsa mabone. Ka kakaretso, e ka aroloa ka maemo a mararo a fapaneng a sebetsang: "tlas'a ho kopana" le "tlas'a ho kopana." Ho kopana ho bohlokoa" le "ho kopana ho matla." Har'a tsona, "tlas'a ho kopana" ho ka fana ka phetoho e lekanyelitsoeng ea mohato feela 'me ho tla hlahisa liphetoho tse sa hlokahaleng tsa amplitude, 'me "ho kopana ho bohlokoa" ho tla baka tahlehelo e kholo ea optical, ka hona ho ama ts'ebetso ea 'nete ea sesebelisoa.
Ho fihlella phetoho e felletseng ea mohato oa 2π le phetoho e fokolang ea amplitude, sehlopha sa lipatlisiso se ile sa laola microring boemong ba "khokahano e matla". Matla a ho kopanya pakeng tsa microring le "bese" a phahame bonyane ka makhetlo a leshome ho feta tahlehelo ea microring. Kamora letoto la meralo le ntlafatso, sebopeho sa ho qetela se bontšoa setšoantšong se ka tlase. Ena ke lesale le nang le molumo o nang le bophara bo fokolang. Karolo e moqotetsane ea waveguide e ntlafatsa matla a ho kopanya a optical pakeng tsa "bese" le micro-coil. Karolo ea waveguide e pharaletseng Tahlehelo ea leseli ea microring e fokotseha ka ho fokotsa ho hasana ha optical ea lebota le ka thoko.
Heqing Huang, mongoli oa pele oa pampiri ena, le eena o itse: “Re entse modulator e nyane, e bolokang matla, le e bonahalang ea phase ea khanya e sa lahleheng haholo e nang le radius ea 5 μm feela le tšebeliso ea matla a modulation ea phase ea π ea 0.8 mW feela. Phapang e hlahisitsoeng ea amplitude e ka tlase ho 10%. Se sa tloaelehang ke hore modulator ena e sebetsa ka ho lekana bakeng sa lihlopha tse putsoa le tse tala tse thata ka ho fetisisa ho spectrum e bonahalang.”
Nanfang Yu o boetse a totobatsa hore leha ba le hole le ho fihlela boemo ba kopanyo ea lihlahisoa tsa elektroniki, mosebetsi oa bona o fokolitse sekheo se pakeng tsa li-switch tsa photonic le li-switch tsa elektroniki haholo. "Haeba theknoloji ea modulator ea pele e ne e lumella feela kopanyo ea li-modulator tsa mohato oa waveguide tse 100 tse fuoeng sebaka se itseng sa chip le tekanyetso ea matla, joale re ka kopanya li-shifter tsa mohato tse 10,000 ho chip e le 'ngoe ho fihlela Mosebetsi o rarahaneng haholoanyane."
Ka bokhutšoanyane, mokhoa ona oa moralo o ka sebelisoa ho li-modulator tsa electro-optic ho fokotsa sebaka se sebelisoang le tšebeliso ea motlakase. O ka boela oa sebelisoa mefuteng e meng ea li-spectral le meralo e meng e fapaneng ea resonator. Hona joale, sehlopha sa lipatlisiso se sebelisana 'moho ho bontša LIDAR ea spectrum e bonahalang e entsoeng ka li-phase shifter arrays tse thehiloeng holim'a li-microring tse joalo. Nakong e tlang, e ka boela ea sebelisoa lits'ebetsong tse ngata tse kang ho se lumellane ha optical ho ntlafalitsoeng, lasers e ncha le li-optical tse ncha tsa quantum.
Mohloli oa sengoloa: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
Beijing Rofea Optoelectronics Co., Ltd. e fumanehang "Silicon Valley" ea Chaena - Beijing Zhongguancun, ke khoebo ea theknoloji e phahameng e inehetseng ho sebeletsa litsi tsa lipatlisiso tsa lehae le tsa kantle ho naha, litsi tsa lipatlisiso, liunivesithi le basebetsi ba lipatlisiso tsa saense tsa likhoebo. Khamphani ea rona e ikakhetse ka setotsoana lipatlisisong le nts'etsopeleng e ikemetseng, moralo, tlhahiso, thekiso ea lihlahisoa tsa optoelectronic, 'me e fana ka litharollo tse ncha le lits'ebeletso tsa profeshenale, tse ikhethileng bakeng sa bafuputsi ba saense le baenjiniere ba indasteri. Kamora lilemo tsa boqapi bo ikemetseng, e thehile letoto le ruileng le le phethahetseng la lihlahisoa tsa photoelectric, tse sebelisoang haholo indastering ea masepala, sesoleng, lipalangoangng, motlakaseng, licheleteng, thutong, bongaka le indastering e meng.
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Nako ea poso: Hlakubele-29-2023