Photonic integrated circuit (PIC) khoom system

Photonic integrated circuit (PIC) khoom system

Silicon photonics yog ib qho kev qhuab qhia uas siv cov qauv txheej txheem raws li cov ntaub ntawv silicon coj lub teeb kom ua tiav ntau yam haujlwm. Peb tsom ntawm no ntawm daim ntawv thov ntawm silicon photonics hauv kev tsim cov transmitters thiab receivers rau fiber optic kev sib txuas lus. Raws li qhov xav tau ntxiv kev sib kis ntau dua ntawm qhov muab bandwidth, tus hneev taw tau muab, thiab tus nqi muab ntxiv, silicon photonics ua suab nrov dua. Rau qhov kho qhov muag,photonic integration technologyyuav tsum tau siv, thiab feem ntau coherent transceivers niaj hnub no yog tsim siv cais LiNbO3 / planar light-wave circuit (PLC) modulators thiab InP / PLC receivers.

Daim duab 1: Qhia pom feem ntau siv photonic integrated circuit (PIC) cov khoom siv.

Daim duab 1 qhia txog cov khoom siv PIC nrov tshaj plaws. Los ntawm sab laug mus rau sab xis yog silicon-based silica PIC (tseem hu ua PLC), silicon-raws li insulator PIC (silicon photonics), lithium niobate (LiNbO3), thiab III-V pawg PIC, xws li InP thiab GaAs. Daim ntawv no tsom mus rau silicon-raws li photonics. Hauvsilicon photonics, lub teeb liab feem ntau taug kev hauv silicon, uas muaj qhov sib txawv ntawm qhov sib txawv ntawm 1.12 electron volts (nrog lub wavelength ntawm 1.1 microns). Silicon yog loj hlob nyob rau hauv daim ntawv ntawm ntshiab crystals nyob rau hauv furnaces thiab txiav mus rau hauv wafers, uas niaj hnub no feem ntau yog 300 hli inch. Lub wafer nto yog oxidized los ua ib txheej silica. Ib tug ntawm cov wafers yog bombarded nrog hydrogen atoms mus rau ib tug tej yam tob. Ob lub wafers tom qab ntawd fused hauv lub tshuab nqus tsev thiab lawv cov oxide txheej sib txuas rau ib leeg. Lub rooj sib txoos tawg raws li hydrogen ion implantation kab. Cov txheej silicon ntawm qhov tawg yog ces polished, nws thiaj li tawm hauv ib txheej nyias ntawm crystalline Si nyob rau sab saum toj ntawm lub silicon "kuav" wafer nyob rau sab saum toj ntawm silica txheej. Waveguides yog tsim los ntawm cov txheej nyias nyias. Thaum cov silicon-raws li insulator (SOI) wafers ua kom tsis tshua muaj silicon photonics waveguides ua tau, lawv tau siv ntau dua hauv cov hluav taws xob CMOS hluav taws xob vim qhov tsis tshua muaj hluav taws xob tam sim no lawv muab.

Muaj ntau yam ua tau ntawm silicon-based optical waveguides, raws li qhia hauv daim duab 2. Lawv muaj xws li microscale germanium-doped silica waveguides mus rau nanoscale Silicon Wire waveguides. Los ntawm kev sib xyaw germanium, nws tuaj yeem ua tauphotodetectorsthiab hluav taws xob nqusmodulators, thiab tej zaum txawm optical amplifiers. Los ntawm doping silicon, iboptical modulatortuaj yeem ua tau. Hauv qab ntawm sab laug mus rau sab xis yog: silicon hlau waveguide, silicon nitride waveguide, silicon oxynitride waveguide, tuab silicon ridge waveguide, nyias silicon nitride waveguide thiab doped silicon waveguide. Nyob rau sab saum toj, ntawm sab laug mus rau sab xis, yog depletion modulators, germanium photodetectors, thiab germaniumoptical amplifiers.

Daim duab 2: Hla ntu ntawm silicon-raws li optical waveguide series, uas qhia txog kev nthuav tawm ib txwm poob thiab qhov ntsuas qhov cuam tshuam.