M'zaka zaposachedwa, ofufuza ochokera m'mayiko osiyanasiyana agwiritsa ntchito ma photonics ophatikizika kuti azindikire motsatira kusintha kwa mafunde a kuwala kwa infrared ndikuyika pamanetiweki othamanga kwambiri a 5G, masensa a chip, ndi magalimoto odziyimira pawokha.Pakali pano, ndi kuzama kosalekeza kwa kayendetsedwe ka kafukufukuyu, ochita kafukufuku ayamba kufufuza mozama magulu achifupi owoneka bwino ndi kupanga mapulogalamu ochulukirapo, monga chip-level LIDAR, AR/VR/MR (yowonjezera/virtual/ hybrid) Zowona) Magalasi, zowonetsera holographic, tchipisi tating'onoting'ono, ma probe optogenetic oyikidwa muubongo, ndi zina zambiri.
Kuphatikizika kwakukulu kwa ma optical phase modulators ndiye phata la optical subsystem ya on-chip optical routing ndi mawonekedwe a free-space wavefront.Ntchito ziwiri zoyambirirazi ndizofunikira pakukwaniritsa ntchito zosiyanasiyana.Komabe, kwa optical phase modulators mu kuwala kowoneka bwino, kumakhala kovuta kwambiri kukwaniritsa zofunikira za transmittance yapamwamba komanso kusinthasintha kwakukulu nthawi imodzi.Kuti tichite izi, ngakhale zida zoyenera za silicon nitride ndi lithiamu niobate ziyenera kuonjezera voliyumu ndikugwiritsa ntchito mphamvu.
Kuti athetse vutoli, Michal Lipson ndi Nanfang Yu aku Columbia University adapanga silicon nitride thermo-optic phase modulator potengera adiabatic micro-ring resonator.Iwo adatsimikizira kuti micro-ring resonator imagwira ntchito mwamphamvu yolumikizana.Chipangizocho chikhoza kukwaniritsa kusintha kwa gawo ndi kutaya kochepa.Poyerekeza ndi ma modulators wamba ma waveguide phase, chipangizochi chimakhala ndi dongosolo lochepetsera kukula kwa danga ndi kugwiritsa ntchito mphamvu.Zogwirizana nazo zasindikizidwa mu Nature Photonics.
Michal Lipson, katswiri wotsogola pantchito yophatikizira ma photonics, kutengera silicon nitride, adati: "Mfungulo ya yankho lomwe tikufuna ndikugwiritsa ntchito chowunikira chowunikira ndikuchita zomwe zimatchedwa kuti zolumikizana mwamphamvu."
Optical resonator ndi mawonekedwe ofananira kwambiri, omwe amatha kusintha kalozera kakang'ono ka refractive kukhala kusintha kwa gawo kudzera m'mizere yambiri yowunikira.Kawirikawiri, ikhoza kugawidwa m'magulu atatu osiyana: "kugwirizanitsa" ndi "kuphatikizana."Kulumikizana kofunikira" ndi "kulumikizana mwamphamvu."Pakati pawo, "kuphatikizana" kumangopereka kusinthika pang'ono kwa gawo ndikuyambitsa kusintha kwa matalikidwe kosafunikira, ndipo "kulumikizana kwakukulu" kumayambitsa kuwonongeka kwakukulu kwa kuwala, potero kumakhudza momwe chipangizocho chikuyendera.
Kuti akwaniritse kusinthika kwathunthu kwa gawo la 2π ndikusintha pang'ono kwa matalikidwe, gulu lofufuza lidasokoneza ma microring "m'malo olumikizana mwamphamvu".Kulumikizana kwamphamvu pakati pa microring ndi "basi" ndipamwamba kuposa nthawi khumi kuposa kutayika kwa microring.Pambuyo pa mapangidwe angapo ndi kukhathamiritsa, mawonekedwe omaliza akuwonetsedwa mu chithunzi pansipa.Iyi ndi mphete yomveka yokhala ndi tapered m'lifupi.Gawo laling'ono la waveguide limapangitsa kuti pakhale mphamvu yolumikizirana pakati pa "basi" ndi koyilo yaying'ono.Gawo lalikulu la waveguide Kutayika kwa kuwala kwa microring kumachepetsedwa ndi kuchepetsa kufalikira kwa kuwala kwa mbali.
Heqing Huang, mlembi woyamba wa pepalali, ananenanso kuti: “Tapanga kachipangizo kakang’ono, kopulumutsa mphamvu, komanso kotsika kwambiri kooneka kagawo ka kuwala kokhala ndi ma radius 5 μm okha ndi π-phase modulation power module of only. 0.8mw.Kusiyanasiyana kwa matalikidwe oyambitsidwa ndi ochepera 10%.Chomwe chili chosowa ndichakuti modulator iyi imagwiranso ntchito pamagulu ovuta kwambiri abuluu ndi obiriwira pamawonekedwe owoneka. ”
Nanfang Yu adanenanso kuti ngakhale kuti sakufika pamlingo wophatikizira zinthu zamagetsi, ntchito yawo yachepetsa kwambiri kusiyana pakati pa kusintha kwa photonic ndi kusintha kwamagetsi."Ngati ukadaulo wam'mbuyomu wamodulator ungolola kuphatikizika kwa ma modulator 100 operekedwa ndi chip footprint ndi bajeti yamagetsi, ndiye kuti tsopano titha kuphatikiza osintha magawo 10,000 pa chip chomwechi kuti akwaniritse Ntchito yovuta kwambiri."
Mwachidule, njira yopangira iyi itha kugwiritsidwa ntchito kwa ma electro-optic modulators kuti muchepetse malo omwe mumakhala komanso kugwiritsa ntchito magetsi.Itha kugwiritsidwanso ntchito mumitundu ina yowoneka bwino komanso mapangidwe ena osiyanasiyana a resonator.Pakadali pano, gulu lofufuza likugwirizana kuti liwonetse mawonekedwe owoneka bwino a LIDAR opangidwa ndi magawo osinthira magawo kutengera ma microring oterowo.M'tsogolomu, itha kugwiritsidwanso ntchito kuzinthu zambiri monga kupititsa patsogolo mawonekedwe osalumikizana, ma lasers atsopano, ndi ma quantum optics atsopano.
Nkhaniyi inayamba https://mp.weixin.qq.com/s/O6iHstkMBPQKDOV4CoukXA
Beijing Rofea Optoelectronics Co., Ltd. yomwe ili ku "Silicon Valley" ku China - Beijing Zhongguancun, ndi bizinesi yapamwamba kwambiri yodzipereka potumikira mabungwe ofufuza zapakhomo ndi akunja, mabungwe ofufuza, mayunivesite ndi ogwira ntchito kafukufuku wa sayansi.Kampani yathu imachita nawo kafukufuku wodziyimira pawokha ndi chitukuko, kapangidwe, kupanga, kugulitsa zinthu za optoelectronic, ndipo imapereka mayankho aluso ndi ntchito zamaluso, zotsogola za akatswiri ofufuza asayansi ndi akatswiri opanga mafakitale.Pambuyo pazaka zatsopano zodziyimira pawokha, zapanga mndandanda wolemera komanso wabwino kwambiri wazinthu zamagetsi, zomwe zimagwiritsidwa ntchito kwambiri m'matauni, asitikali, zoyendera, mphamvu zamagetsi, ndalama, maphunziro, zamankhwala ndi mafakitale ena.
Tikuyembekezera mgwirizano ndi inu!
Nthawi yotumiza: Mar-29-2023