Mumakore achangopfuura, vaongorori vanobva kunyika dzakasiyana-siyana vakashandisa mafotoniki akabatanidzwa kuti vaone kushandiswa kwemafungu echiedza che infrared uye kuashandisa kune network dze 5G dzinomhanya zvakanyanya, ma chip sensors, uye mota dzinozvitonga. Parizvino, nekudzika kuri kuramba kuchiita tsvakiridzo iyi, vaongorori vakatanga kuona zvakadzama mabhendi mapfupi echiedza uye kugadzira mashandisirwo akawanda, akadai se chip-level LIDAR, AR/VR/MR (enhanced/virtual/hybrid) Reality) Magirazi, holographic displays, quantum processing chips, optogenetic probes dzakaiswa muuropi, nezvimwewo.
Kubatanidzwa kukuru kwema optical phase modulators ndiko musimboti we optical subsystem ye on-chip optical routing uye free-space wavefront shaping. Mabasa maviri aya ekutanga akakosha pakuita mashandisirwo akasiyana-siyana. Zvisinei, kune ma optical phase modulators ari mu visible light range, zvinonyanya kuoma kusangana nezvinodiwa zve high transmittance uye high modulation panguva imwe chete. Kuti zvizadzise zvinodiwa izvi, kunyangwe silicon nitride uye lithium niobate materials akakodzera zvakanyanya anofanirwa kuwedzera volume uye simba rinoshandiswa.
Kuti vagadzirise dambudziko iri, Michal Lipson naNanfang Yu vekuColumbia University vakagadzira modulator yesilicon nitride thermo-optic phase yakavakirwa pa adiabatic micro-ring resonator. Vakaratidza kuti micro-ring resonator inoshanda zvakanaka. Mudziyo uyu unogona kuwana phase modulation pasina kurasikirwa kukuru. Kana tichienzanisa nema waveguide phase modulators akajairwa, mudziyo uyu une kanenge kuderedzwa kukuru kwenzvimbo uye kushandiswa kwesimba. Zviri mukati zvakabatana zvakaburitswa muNature Photonics.
Michal Lipson, nyanzvi inotungamira mubasa re integrated photonics, yakavakirwa pa silicon nitride, akati: "Chinhu chikuru chemhinduro yedu ndechekushandisa optical resonator uye kushanda mumamiriro anonzi strong coupling state."
Optical resonator chimiro chakafanana zvikuru, chinogona kushandura shanduko diki ye refractive index kuita shanduko ye phase kuburikidza nematanho akawanda emwenje. Kazhinji, inogona kukamurwa kuita mamiriro matatu akasiyana ekushanda: "pasi pekubatana" uye "pasi pekubatana." Critical coupling" uye "strong coupling." Pakati pavo, "pasi pekubatana" inogona kungopa limited phase modulation uye ichaunza shanduko dzisina kufanira dze amplitude, uye "critical coupling" ichakonzera kurasikirwa kukuru kwe optical, nokudaro ichikanganisa mashandiro chaiwo emudziyo.
Kuti vawane modulation yakakwana yechikamu che2π uye shanduko shoma yehukuru, timu yekutsvagisa yakashandura microring mu "simba rekubatanidza". Simba rekubatanidza pakati pe microring ne "bhazi" rakapetwa kagumi kupfuura kurasikirwa kwe microring. Mushure mekugadzirwa kwakawanda uye kugadzirisa, chimiro chekupedzisira chinoratidzwa mumufananidzo uri pazasi. Iyi iring ine resonant ine upamhi hwakatetepa. Chikamu chakamanikana che waveguide chinovandudza simba rekubatanidza optical pakati pe "bhazi" ne micro-coil. Chikamu che waveguide chakafara Kurasikirwa kwechiedza kwe microring kunoderedzwa nekuderedza kupararira kwe optical kwerutivi.
Heqing Huang, munyori wekutanga wepepa iri, akatiwo: “Takagadzira modulator diki, inochengetedza simba, uye isinganyanyi kurasikirwa nechiedza ine radius ye5 μm chete uye simba rekushandisa π-phase modulation re0.8 mW chete. Kusiyana kweamplitude kwakatangwa kuri pasi pe10%. Chisingawanzoitiki ndechekuti modulator iyi inoshanda zvakaenzana kune mabhandi ebhuruu negirini akaomarara mu spectrum inooneka.”
Nanfang Yu akataurawo kuti kunyange hazvo vari kure nekusvika padanho rekubatanidza zvigadzirwa zvemagetsi, basa ravo raderedza zvikuru musiyano uripo pakati pemaswichi ephotonic nemaswichi emagetsi. "Kana tekinoroji yekare yemodulator yaingobvumira kubatanidzwa kwemamodulator zana ewaveguide phase ane 100 zvichipiwa hunyanzvi hwakati hwechip uye bhajeti remagetsi, saka ikozvino tinogona kubatanidza mashifiti ephase gumi pachip imwe chete kuti tiwane Basa rakaoma."
Muchidimbu, nzira iyi yekugadzira inogona kushandiswa kuma electro-optic modulators kuderedza nzvimbo inogarwa uye kushandiswa kwevoltage. Inogona zvakare kushandiswa mune mamwe ma spectral ranges nemamwe madhizaini akasiyana e resonator. Parizvino, timu yekutsvagisa iri kushanda pamwe chete kuratidza visible spectrum LIDAR inoumbwa nema phase shifter arrays akavakirwa pama microrings akadaro. Mune ramangwana, inogona zvakare kushandiswa kune akawanda maapplication akadai se enhanced optical nonlinearity, new lasers, uye new quantum optics.
Chitubu chechinyorwa: https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
Beijing Rofea Optoelectronics Co., Ltd. iri mu "Silicon Valley" yeChina - Beijing Zhongguancun, ikambani yetekinoroji yepamusoro yakatsaurirwa kushandira masangano ekutsvagisa emuno nekunze kwenyika, masangano ekutsvagisa, mayunivhesiti nevashandi vekutsvagisa sainzi vemabhizinesi. Kambani yedu inonyanya kuita tsvakurudzo yakazvimirira nekugadzira, dhizaini, kugadzira, kutengesa zvigadzirwa zve optoelectronic, uye inopa mhinduro itsva uye masevhisi ehunyanzvi, akagadzirirwa vaongorori vesainzi nemainjiniya emaindasitiri. Mushure memakore ekuvandudza kwakazvimirira, yakagadzira nhevedzano yakapfuma uye yakakwana yezvigadzirwa zve photoelectric, izvo zvinoshandiswa zvakanyanya mumaindasitiri emaguta, emauto, ekufambisa, emagetsi, emari, dzidzo, ekurapa nedzimwe nzvimbo.
Tiri kutarisira kushanda pamwe chete nemi!
Nguva yekutumira: Kurume-29-2023