Cov kws tshawb fawb South Kauslim tau ua tiav cov thev naus laus zis los tsim cov quantum dot lasers, uas tau siv dav hauv cov chaw khaws ntaub ntawv thiab kev sib txuas lus quantum. Qhov kev tawg ua rau txoj hauv kev los txo cov nqi tsim khoom ntawm semiconductor lasers mus rau ib-rau ntawm qib tam sim no.
Lub koom haum Electronics thiab Telecommunications Research Institute (ETRI) tshaj tawm tias lawv tau tsim cov thev naus laus zis los tsim cov quantum dot lasers siv cov hlau organic chemical vapor deposition (MOCVD) system thawj zaug hauv Kauslim.
ETRI Optical Communication Cheebtsam Kev Tshawb Fawb Kev Tshawb Fawb tau ua tiav kev tsim kho indium arsenide / Gallium arsenide (InAs / GaAs) quantum dot laser diodes ntawm gallium arsenide (GaAs) substrates rau 1.3 µm wavelength band siv hauv kev sib txuas lus kho qhov muag.
Kev lig kev cai, quantum dot laser diodes yog tsim los ntawm molecular beam epitaxy (MBE) thev naus laus zis, tab sis txoj kev no tsis muaj txiaj ntsig vim nws qhov kev loj hlob qeeb, ua rau ntau qhov nyuaj. Los ntawm kev siv MOCVD, uas muaj kev ua haujlwm ntau dua, pab pawg tshawb fawb tau txhim kho kev ua haujlwm zoo ntawm quantum dot lasers. Quantum dot lasers paub txog lawv cov yam ntxwv kub zoo thiab muaj zog kam rau cov substrate tsis xws luag, uas tso cai rau thaj chaw loj substrate, yog li txo qis kev siv hluav taws xob thiab cov nqi tsim khoom.
Tus tshiab tsim quantum dot manufacturing technology muaj siab ceev thiab zoo uniformity. Lub tshuab ua quantum dot semiconductor laser tuaj yeem ua haujlwm tsis tu ncua ntawm qhov kub txog li 75 degrees Celsius, qhia tias MOCVD thev naus laus zis tau ua tiav cov txiaj ntsig thoob ntiaj teb.
Yav dhau los, cov khoom siv sib txuas lus kho qhov muag tau siv kim 2-inch indium phosphide (InP) substrates, ua rau cov nqi tsim khoom siab. Cov thev naus laus zis tshiab siv gallium arsenide substrates uas raug nqi tsawg dua ib feem peb ntawm InP substrates thiab xav tias yuav txo cov nqi tsim khoom ntawm kev sib txuas lus semiconductor lasers kom tsawg dua ib-rau.
Lub tshuab muaj peev xwm siv cov cheeb tsam loj, yog li nws tuaj yeem txo cov sijhawm ua haujlwm thiab cov nqi khoom siv.
Pab neeg tshawb fawb npaj yuav ua kom zoo dua thiab txheeb xyuas cov thev naus laus zis no txhawm rau txhim kho nws txoj kev ntseeg tau thiab hloov mus rau cov tuam txhab kev sib txuas lus hauv tsev. Cov tuam txhab no yuav tau txais cov thev naus laus zis tseem ceeb thiab kev txhawb nqa kev tsim vaj tsev los ntawm ETRI's semiconductor foundry kom nrawm ua lag luam.
Kev txo qis hauv kev tsim kho lub sijhawm thiab cov nqi tsim khoom yuav tsum txhim kho cov khoom lag luam tus nqi sib tw thiab muaj peev xwm nce kev lag luam thoob ntiaj teb. Qhov kev vam meej no yuav tsum txhawb txoj kev loj hlob ntawm domestic optical kev sib txuas lus tivthaiv kev lag luam.
Hauv lub neej niaj hnub no, kev sib txuas lus kho qhov muag yog peb txoj kev lag luam. Qhov kev ua tiav ntawm pab pawg tshawb fawb no yuav hloov pauv txoj kev loj hlob ntawm cov teeb pom kev zoo, kev sib txuas ntawm cov tsev apartment rau cov nroog loj, thiab submarine optical cables.
Xib fwb Dae Myung Geum ntawm Chungbuk National University, ib tug ntawm cov neeg koom nyob rau hauv qhov kev tshawb fawb no, hais tias, "Lub loj ntau lawm technology ntawm quantum dots yuav txo tau cov nqi tsim khoom ntawm high-qib optical kev sib txuas lus khoom, txhim kho cov kev sib tw ntawm lub teb chaws optical kev sib txuas lus tivthaiv. kev lag luam, thiab ua kom muaj txiaj ntsig zoo rau kev tshawb fawb txog kev tshawb fawb. " Dr. Ho Sung Kim los ntawm Optical Communication Component Research Department ntawm ETRI tau hais tias, "Qhov kev tshawb fawb tau ua tiav no yog ib qho piv txwv zoo tshaj plaws ntawm kev ua kom muaj kev lag luam muaj txiaj ntsig thiab kev tsim kho tshiab, thiab muaj peev xwm hloov pauv lub tswv yim ntawm kev sib txuas lus kho qhov muag semiconductor laser kev lag luam."
