Taw qhia
Kev tshoov siab los ntawm kev ua tiav ntawm cov khoom siv hluav taws xob sib xyaw ua ke (EICs), thaj chaw ntawm photonic integrated circuits (PICs) tau hloov zuj zus txij li thaum nws pib xyoo 1969. Txawm li cas los xij, tsis zoo li EICs, kev txhim kho thoob ntiaj teb platform muaj peev xwm txhawb ntau hom kev siv photonic tseem yog ib qho kev sib tw loj. Tsab ntawv xov xwm no tshawb fawb txog Lithium Niobate ntawm Insulator (LNOI) thev naus laus zis, uas tau dhau los ua ib qho kev cog lus rau PICs tiam tom ntej.
Sawv ntawm LNOI Technology
Lithium niobate (LN) tau ntev tau lees paub tias yog cov khoom tseem ceeb rau kev siv photonic. Txawm li cas los xij, tsuas yog nrog kev tshwm sim ntawm nyias-zaj duab xis LNOI thiab cov txheej txheem kev tsim kho siab heev nws muaj peev xwm tag nrho raug kaw. Cov kws tshawb fawb tau ua tiav qhov ua tau zoo ntawm ultra-low-loss ridge waveguides thiab ultra-high-Q microresonators ntawm LNOI platforms [1], ua rau muaj kev vam meej hauv kev sib koom ua ke photonics.
Cov txiaj ntsig tseem ceeb ntawm LNOI Technology
- Ultra-tsawg optical poob0.01 dB / cm2
- Cov qauv zoo nanophotonic
- Kev them nyiaj yug rau ntau hom nonlinear optical txheej txheem
- Integrated electro-optic (EO) tunability
Nonlinear Optical Processes ntawm LNOI
High-performance nanophotonic lug fabricated nyob rau hauv lub LNOI platform pab kom lub realization ntawm qhov tseem ceeb nonlinear optical txheej txheem nrog zoo kawg li efficiency thiab tsawg zog twj tso kua mis. Cov txheej txheem ua qauv qhia muaj xws li:
- Thib ob Harmonic Generation (SHG)
- Sum Frequency Generation (SFG)
- Qhov sib txawv zaus Generation (DFG)
- Parametric Down-Conversion (PDC)
- Four-Wave Mixing (FWM)
Ntau cov txheej txheem sib piv tau raug muab coj los ua kom zoo dua cov txheej txheem no, tsim LNOI ua ntau yam tsis muaj kab hluav taws xob kho qhov muag.
Electro-Optically Tunable Integrated Devices
LNOI thev naus laus zis kuj tau ua kom muaj kev txhim kho ntau yam ntawm cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tsis zoo, xws li:
- Kev kub ceev optical modulators
- Reconfigurable multifunctional PICs
- Tunable zaus combs
- Micro-optomechanical springs
Cov khoom siv no siv cov khoom siv EO ntawm lithium niobate kom ua tiav qhov tseeb, kev kub ceev tswj cov teeb liab.
Kev siv tswv yim ntawm LNOI Photonics
LNOI-raws li PICs tam sim no tau txais kev pom zoo hauv ntau daim ntawv thov siv tau, suav nrog:
- Microwave-rau-optical converters
- Optical sensors
- On-chip spectrometers
- Optical zaus combs
- Advanced telecommunication systems
Cov ntawv thov no qhia txog lub peev xwm ntawm LNOI kom phim qhov kev ua tau zoo ntawm cov khoom siv kho qhov muag, thaum muab cov kev daws teeb meem loj, lub zog siv hluav taws xob los ntawm photolithographic fabrication.
Cov kev sib tw tam sim no thiab cov kev taw qhia yav tom ntej
Txawm hais tias nws txoj kev vam meej, LNOI thev naus laus zis ntsib ntau yam teeb meem kev lag luam:
a) Kev txo qis qhov muag pom ntxiv
Tam sim no waveguide poob (0.01 dB / cm) tseem yog qhov kev txiav txim siab siab dua li cov khoom siv nqus. Kev nce qib hauv cov txheej txheem ion-slicing thiab nanofabrication yog xav tau los txo qhov roughness ntawm qhov chaw thiab qhov cuam tshuam txog kev nqus.
b) Txhim kho Waveguide Geometry Control
Enabling sub-700 nm waveguides thiab sub-2 μm coupling qhov khoob uas tsis muaj kev cuam tshuam rov ua dua lossis nce kev nthuav tawm poob yog qhov tseem ceeb rau kev sib koom ua ke ntau dua.
c) Txhim kho Coupling Efficiency
Thaum tapered fibers thiab hom converters pab ua kom muaj kev sib txuas ua haujlwm siab, cov txheej tiv thaiv kev cuam tshuam tuaj yeem txo cov khoom siv huab cua cuam tshuam ntxiv.
d) Kev txhim kho ntawm Cov Poob Tsawg Polarization
Polarization-insensitive photonic li ntawm LNOI yog qhov tseem ceeb, yuav tsum muaj cov khoom sib xyaw ua haujlwm ntawm qhov chaw dawb polarizers.
e) Kev koom ua ke ntawm Kev Tswj Hluav Taws Xob
Kev sib koom ua ke nrog cov khoom siv hluav taws xob loj loj uas tsis muaj kev cuam tshuam kev ua haujlwm kho qhov muag yog qhov kev tshawb fawb tseem ceeb.
f) Advanced Phase Matching thiab Dispersion Engineering
Txhim khu kev ntseeg tus qauv ntawm sub-micron daws teeb meem yog qhov tseem ceeb rau nonlinear optics tab sis tseem yog cov thev naus laus zis tsis paub qab hau ntawm LNOI platform.
g) Kev them nyiaj rau Fabrication Defects
Cov txheej txheem los txo cov theem hloov pauv los ntawm kev hloov pauv ib puag ncig lossis kev tsim cov khoom sib txawv yog qhov tseem ceeb rau kev xa mus rau lub ntiaj teb tiag.
h) Ua tau zoo Multi-Chip Coupling
Hais txog kev sib txuas tau zoo ntawm ntau lub LNOI chips yog qhov tsim nyog los ntsuas dhau qhov kev txwv ib leeg-wafer.
Monolithic kev koom ua ke ntawm Active thiab Passive Cheebtsam
Ib qho kev sib tw tseem ceeb rau LNOI PICs yog tus nqi-zoo monolithic kev koom ua ke ntawm active thiab passive Cheebtsam xws li:
- Lasers
- Cov neeg ntes
- Nonlinear wavelength converters
- Modulators
- Multiplexers / Demultiplexers
Cov tswv yim tam sim no suav nrog:
a) Ion Doping ntawm LNOI:
Kev xaiv doping ntawm cov ions nquag mus rau hauv cheeb tsam uas tau xaiv tuaj yeem ua rau lub teeb ci ntawm lub teeb.
b) Kev sib koom ua ke thiab kev sib koom ua ke:
Bonding pre-fabricated passive LNOI PICs nrog doped LNOI txheej los yog III-V lasers muab txoj hauv kev.
c) Hybrid Active/Passive LNOI Wafer Fabrication:
Ib txoj hauv kev tshiab muaj kev sib koom ua ke ntawm doped thiab undoped LN wafers ua ntej ion slicing, ua rau LNOI wafers nrog ob qho tib si nquag thiab tsis muaj zog.
Daim duab 1qhia txog lub tswv yim ntawm hybrid integrated active / passive PICs, qhov twg ib qho txheej txheem lithographic ua rau muaj kev sib haum xeeb thiab kev sib koom ua ke ntawm ob hom khoom.
Kev koom ua ke ntawm Photodetectors
Kev koom ua ke cov duab thaij duab rau hauv LNOI-based PICs yog lwm kauj ruam tseem ceeb rau kev ua haujlwm siab. Ob txoj hauv kev tseem ceeb yog nyob rau hauv kev tshawb nrhiav:
a) Heterogeneous Integration:
Semiconductor nanostructures tuaj yeem hloov pauv mus rau LNOI waveguides. Txawm li cas los xij, kev txhim kho hauv kev tshawb pom kev ua tau zoo thiab scalability tseem xav tau.
b) Nonlinear Wavelength Conversion:
LN's nonlinear zog tso cai hloov zaus nyob rau hauv waveguides, ua kom siv cov qauv silicon photodetectors tsis hais txog kev khiav hauj lwm wavelength.
Xaus
Kev nce qib sai ntawm LNOI thev naus laus zis coj kev lag luam los ze rau lub ntiaj teb PIC platform muaj peev xwm ua haujlwm rau ntau yam kev siv. Los ntawm kev hais daws cov teeb meem uas twb muaj lawm thiab thawb mus rau kev tsim kho tshiab hauv kev sib koom ua ke ntawm monolithic thiab kuaj pom, LNOI-raws li PICs muaj peev xwm los hloov pauv thaj chaw xws li kev sib txuas lus, quantum cov ntaub ntawv, thiab kev paub.
LNOI tuav cov lus cog tseg ntawm kev ua tiav lub zeem muag ntev ntev ntawm PICs scalable, sib piv cov kev vam meej thiab cuam tshuam ntawm EICs. Txuas ntxiv R&D kev siv zog-xws li cov los ntawm Nanjing Photonics Process Platform thiab XiaoyaoTech Tsim Platform-yuav yog qhov tseem ceeb hauv kev tsim lub neej yav tom ntej ntawm kev sib koom ua ke photonics thiab qhib qhov muaj peev xwm tshiab thoob plaws cov thev naus laus zis.
Post lub sij hawm: Lub Xya hli ntuj-18-2025