Silicon photonics nquag caij

Silicon photonics nquag caij

Photonic nquag cov Cheebtsam saib xyuas kom txhob txwm tsim cov kev sib cuam tshuam zoo ntawm lub teeb thiab teeb meem. Ib tug neeg nquag tivthaiv tiv thaiv ntawm photonics yog ib qho kho qhov muag. Txhua yam silicon raws liKho qhov muag ModulatorsUa raws li cov ntshav cov ntshav dawb cov nyhuv nyhuv. Hloov cov xov tooj ntawm cov tshuab hluav taws xob dawb thiab qhov hauv cov txheej txheem silicon los ntawm kev siv hluav taws xob (1,2) tau txais los ntawm cov ntaub ntawv tsis zoo los ntawm cov nthwv dej ntawm lub nthwv dej ntawm 1550 nanometers Cov. Piv nrog cov electrons, qhov ua rau muaj feem ntau ntawm cov kev hloov pauv tiag tiagMach-zagnder modulatorsThiab lub nplhaib modulators, nws feem ntau nyiam siv lub qhov komTheem Modulators.

Cov ntau yamSilicon (Si) Modulatorhom yog qhia hauv daim duab 10a. Hauv kev txhaj tshuaj carrier modulator, lub teeb nyob rau hauv intrinsic silicon nyob rau hauv ib tug heev pin kev sib tshuam, thiab hluav taws xob thiab lub qhov tau txhaj. Txawm li cas los xij, cov modulators xws qeeb qeeb, feem ntau yog nrog bandwidth ntawm 500 mhz, vim tias cov hluav taws xob hluav taws xob thiab qhov siv sijhawm ntev dua rau kev txhaj tshuaj tom qab txhaj tshuaj ntxiv tom qab txhaj. Yog li ntawd, cov qauv qauv no feem ntau yog siv los ua tus qauv hloov kho OTenical (VOA) tsis yog tus modulator. Nyob rau hauv ib tug thauj khoom thauj khoom, lub teeb seem yog nyob rau hauv ib tug Nqaim Pn kev sib tshuam, thiab qhov depletion pn kev sib tw tau hloov pauv los ntawm cov khoom siv hluav taws xob. Tus modulator no tuaj yeem ua haujlwm ntawm kev nrawm hauv qhov dhau 50GB / s, tab sis muaj qhov siab tom qab poob. Tus Raug VPIL yog 2 V-cm. Ib tug hlau oxide semiconductor (mos) (tiag semiconductor-oxide-semiconductor) modulator muaj ib qho oxide txheej hauv ib qho oxide txheej. Nws tso cai rau qee cov neeg nqa khoom ntxiv nrog rau cov chaw muaj hluav taws xob, cia ib qho me me ntawm li 0.2 v-cm, tab sis muaj qhov tsis zoo ntawm kev kho kom zoo dua thiab muaj peev xwm ntau dua ib qho ntev. Tsis tas li ntawd, muaj Sige Hluav Taws Xob Nruab Nrab Modulators raws li sige (sivicon Germanium alloy) Tsis tas li ntawd, muaj graphene modulators uas cia siab rau graphene kom hloov ntawm nqus cov hlau thiab pob tshab insulators. Cov kev ua yeeb yam ntawm cov kev siv ntawm cov txheej txheem sib txawv kom ua tiav cov kev kub ceev, txo qhov muag pib kho qhov muag.

Daim duab 10: (a) Hla kev kos duab ntawm ntau yam khoom siv hluav taws xob ua kom zoo nkauj thiab (b) hla kev kos duab ntawm cov ntes kho qhov muag.

Ntau silicon-based teeb ntes tau muaj nyob hauv daim duab 10b. Cov khoom siv nqus tau yog germanium (ge). GE muaj peev xwm nqus tau lub teeb ntawm nthwv cua mus txog 1.6 microns. Qhia rau sab laug yog cov neeg ua lag luam tau zoo tshaj plaws rau tus lej PIN niaj hnub no. Nws yog tsim los ntawm P-hom doped silicon ntawm qhov ge loj hlob. GE thiab Si muaj 4% lattice tsis sib xws, thiab txhawm rau txo cov dislocation, ib txheej nyias muaj lawm yog cov txheej ua ib txheej. N-hom doping yog ua rau saum toj ntawm txheej ge. Hlau hlau-semiconductor-hlau (MSM) photodiode yog qhia nyob hauv nruab nrab, thiab ib qho APD (Avalanche photodetector) qhia rau sab xis. Thaj av avalanche hauv Apd nyob hauv SI, uas muaj cov cim qis dua piv rau cov avalanche cheeb tsam hauv cov pab pawg III-v cov khoom lag luam.

Tam sim no, tsis muaj kev daws teeb meem nrog cov txiaj ntsig zoo hauv kev koom ua ke ntawm qhov muag tau txais nrog silicon photonics. Daim duab 11 qhia tau ntau qhov kev xaiv tau npaj los ntawm kev sib dhos. Ntawm qhov deb sab laug yog monolithic kev sib xyaw uas suav nrog kev siv cov khoom siv kho mob (ERBium Wave Ground) ) Quantum dots. Cov kab tom ntej yog Wafefer rau Wafer sib dhos, koom nrog Oxide thiab Orgide tsev neeg hauv III-v pawg nce cheeb tsam. Sab tom ntej yog chip-rau-wafer sib dhos, uas koom nrog embedding lub ii-v pab rau hauv kab noj hniav ntawm silicon wafer thiab ces machining tus qauv WaveGuide. Qhov kom zoo dua ntawm thawj peb txoj hauv kev yog tias cov cuab yeej tuaj yeem ua haujlwm tau tag nrho sab hauv cov wafer ua ntej txiav. Txoj cai-feem ntau yog nti Cov qauv siv rau cov ntawv thov kev lag luam tau tsiv los ntawm sab xis rau sab laug ntawm daim duab taw qhia kev sib xyaw ua ke rau kev sib xyaw ua ke thiab ua cov kev daws teeb meem.

Daim duab 11: Yuav ua li cas optical tau muab ua ke rau hauv silicon-based photonics. Thaum koj tsiv los ntawm sab laug rau sab xis, kev tsim cov ntxig ntxig cov maj mam txav rov qab rau hauv cov txheej txheem.