Kev sib piv ntawm cov khoom siv photonic integrated circuit systems

Kev sib piv ntawm cov khoom siv photonic integrated circuit systems
Daim Duab 1 qhia txog kev sib piv ntawm ob lub tshuab khoom siv, indium Phosphorus (InP) thiab silicon (Si). Qhov tsis tshua muaj indium ua rau InP yog cov khoom siv kim dua Si. Vim tias cov voj voog raws li silicon muaj kev loj hlob tsawg dua epitaxial, cov txiaj ntsig ntawm cov voj voog raws li silicon feem ntau siab dua li ntawm InP voj voog. Hauv cov voj voog raws li silicon, germanium (Ge), uas feem ntau tsuas yog siv rau hauvLub tshuab ntes duab(cov khoom ntes teeb), xav tau kev loj hlob epitaxial, thaum nyob rau hauv InP systems, txawm tias passive waveguides yuav tsum tau npaj los ntawm epitaxial kev loj hlob. Epitaxial kev loj hlob feem ntau muaj qhov tsis zoo density ntau dua li ib qho kev loj hlob siv lead ua ke, xws li los ntawm cov siv lead ua ke. InP waveguides muaj qhov sib piv siab refractive index tsuas yog nyob rau hauv transverse, thaum silicon-based waveguides muaj qhov sib piv siab refractive index hauv ob qho tib si transverse thiab longitudinal, uas tso cai rau cov khoom siv silicon-based kom ua tiav cov bending radii me dua thiab lwm yam qauv compact dua. InGaAsP muaj qhov sib txawv ncaj qha, thaum Si thiab Ge tsis ua. Yog li ntawd, InP cov khoom siv systems zoo dua hauv cov nqe lus ntawm laser efficiency. Cov intrinsic oxides ntawm InP systems tsis ruaj khov thiab muaj zog li cov intrinsic oxides ntawm Si, silicon dioxide (SiO2). Silicon yog cov khoom siv muaj zog dua li InP, tso cai rau kev siv cov wafer loj dua, piv txwv li los ntawm 300 mm (sai sai no yuav hloov kho mus rau 450 mm) piv rau 75 mm hauv InP. InPcov modulatorsfeem ntau nyob ntawm qhov quantum-confined Stark effect, uas yog qhov kub-sensitive vim yog qhov txav ntawm ntug band los ntawm qhov kub thiab txias. Qhov sib piv, qhov kub thiab txias ntawm cov modulators raws li silicon yog me heev.

Feem ntau, cov thev naus laus zis silicon photonics tsuas yog suav tias tsim nyog rau cov khoom lag luam pheej yig, luv luv, thiab muaj ntau (ntau dua 1 lab daim hauv ib xyoos). Qhov no yog vim nws tau lees paub dav dav tias yuav tsum muaj peev xwm wafer ntau heev los nthuav cov nqi ntawm lub ntsej muag thiab kev tsim kho, thiab qhov ntawdkev siv tshuab silicon photonicsmuaj qhov tsis zoo ntawm kev ua tau zoo hauv kev siv cov khoom lag luam hauv nroog mus rau nroog thiab kev siv khoom ntev. Qhov tseeb, txawm li cas los xij, qhov txawv yog qhov tseeb. Hauv cov nqi qis, luv luv, cov txiaj ntsig siab, cov laser ntsug qhov chaw saum npoo av (VCSEL) thiablaser ncaj qha-modulated (DML laser) : ncaj qha modulated laser ua rau muaj kev sib tw loj heev, thiab qhov tsis muaj zog ntawm silicon-based photonic technology uas tsis tuaj yeem yooj yim sib koom ua ke lasers tau dhau los ua qhov tsis zoo. Qhov sib piv, hauv metro, kev siv deb, vim yog qhov nyiam sib koom ua ke silicon photonics technology thiab digital signal processing (DSP) ua ke (uas feem ntau nyob rau hauv qhov chaw kub siab), nws muaj txiaj ntsig zoo dua los cais lub laser. Tsis tas li ntawd, coherent detection technology tuaj yeem ua rau qhov tsis zoo ntawm silicon photonics technology rau ntau yam, xws li qhov teeb meem uas qhov tsaus ntuj tam sim no me dua li lub oscillator hauv zos photocurrent. Tib lub sijhawm, nws kuj tsis yog qhov xav tias xav tau ntau lub peev xwm wafer los them rau lub ntsej muag thiab kev txhim kho, vim tias silicon photonics technology siv cov node loj uas loj dua li cov khoom siv hlau oxide semiconductors (CMOS) siab heev, yog li cov ntsej muag thiab kev tsim khoom xav tau pheej yig.