8 nti LNOI (LiNbO3 ntawm Insulator) Wafer rau Optical Modulators Waveguides Integrated Circuits
Daim duab qhia ntxaws ntxaws
Kev Taw Qhia
Lithium Niobate on Insulator (LNOI) wafers yog cov khoom siv tshiab siv rau hauv ntau yam kev siv optical thiab electronic. Cov wafers no yog tsim los ntawm kev hloov ib txheej nyias nyias ntawm lithium niobate (LiNbO₃) mus rau hauv ib lub insulating substrate, feem ntau yog silicon lossis lwm yam khoom siv tsim nyog, siv cov txheej txheem zoo li ion implantation thiab wafer bonding. LNOI technology muaj ntau yam zoo sib xws nrog Silicon on Insulator (SOI) wafer technology tab sis siv qhov zoo ntawm cov khoom siv optical tshwj xeeb ntawm lithium niobate, ib yam khoom uas paub txog nws cov yam ntxwv piezoelectric, pyroelectric, thiab nonlinear optical.
LNOI wafers tau txais kev saib xyuas zoo hauv cov teb xws li kev sib xyaw ua ke optics, kev sib txuas lus, thiab kev suav lej quantum vim lawv qhov kev ua tau zoo tshaj plaws hauv kev siv zaus siab thiab ceev ceev. Cov wafers raug tsim los ntawm kev siv cov txheej txheem "Smart-cut", uas ua rau muaj kev tswj hwm qhov tuab ntawm cov zaj duab xis nyias lithium niobate, kom ntseeg tau tias cov wafers ua tau raws li cov lus qhia xav tau rau ntau yam kev siv.
Lub Ntsiab Cai
Cov txheej txheem ntawm kev tsim LNOI wafers pib nrog ib lub lithium niobate crystal loj. Lub crystal raug ion implantation, qhov twg cov helium ions muaj zog siab raug coj mus rau hauv qhov chaw ntawm lub lithium niobate crystal. Cov ions no nkag mus rau hauv lub crystal mus rau qhov tob tshwj xeeb thiab cuam tshuam cov qauv crystal, tsim ib lub dav hlau uas yooj yim tawg uas tom qab ntawd tuaj yeem siv los cais lub crystal ua cov txheej nyias nyias. Lub zog tshwj xeeb ntawm cov helium ions tswj qhov tob ntawm kev cog, uas cuam tshuam ncaj qha rau qhov tuab ntawm cov txheej lithium niobate kawg.
Tom qab muab cov ion implantation tso rau hauv, cov lithium niobate crystal raug txuas rau ib lub substrate siv ib txoj kev hu ua wafer bonding. Cov txheej txheem txuas feem ntau siv txoj kev txuas ncaj qha, qhov twg ob qhov chaw (cov lithium niobate crystal uas muab ion implanted thiab lub substrate) raug nias ua ke hauv qab qhov kub thiab siab kom tsim tau ib qho kev sib txuas zoo. Qee zaum, cov khoom siv nplaum xws li benzocyclobutene (BCB) yuav raug siv rau kev txhawb nqa ntxiv.
Tom qab kev sib txuas, lub wafer dhau los ntawm cov txheej txheem annealing los kho txhua qhov kev puas tsuaj los ntawm kev cog ion thiab txhim kho kev sib txuas ntawm cov txheej. Cov txheej txheem annealing kuj pab cov txheej lithium niobate nyias nyias kom tawm ntawm cov siv lead ua qub, tawm hauv qab cov txheej lithium niobate nyias nyias, zoo uas tuaj yeem siv rau kev tsim khoom siv.
Cov Lus Qhia Tshwj Xeeb
LNOI wafers muaj ntau yam tseem ceeb uas ua kom lawv tsim nyog rau cov ntawv thov ua haujlwm siab. Cov no suav nrog:
Cov Khoom Siv
| Cov khoom siv | Cov lus qhia |
| Khoom siv | Homogeneous: LiNbO3 |
| Cov Khoom Siv Zoo | Cov npuas lossis cov khoom suav nrog <100μm |
| Kev Taw Qhia | Y-txiav ±0.2° |
| Qhov Ceev | 4.65 g/cm³ |
| Kub ntawm Curie | 1142 ±1°C |
| Kev Pom Tseeb | >95% hauv 450-700 nm ntau yam (10 hli tuab) |
Cov Lus Qhia Txog Kev Tsim Khoom
| Parameters | Kev qhia tshwj xeeb |
| Txoj kab uas hla | 150 hli ± 0.2 hli |
| Qhov tuab | 350 μm ± 10 μm |
| Kev tiaj tiaj | <1.3 μm |
| Tag Nrho Thickness Variation (TTV) | Warp <70 μm @ 150 hli wafer |
| Kev Hloov Pauv Thickness Hauv Zos (LTV) | <70 μm @ 150 hli wafer |
| Kev ntxhib | Rq ≤0.5 nm (tus nqi AFM RMS) |
| Qhov Zoo Ntawm Qhov Chaw | 40-20 |
| Cov Khoom Me Me (Tsis Tshem Tawm) | 100-200 μm ≤3 cov khoom me me |
| Cov qos yaj ywm | <300 μm (tag nrho cov wafer, tsis muaj thaj chaw cais tawm) |
| Cov kab nrib pleb | Tsis muaj kab nrib pleb (tag nrho wafer) |
| Kev ua qias tuaj | Tsis muaj cov xim uas tsis tshem tau (tag nrho cov wafer) |
| Kev sib luag | <30 arcseconds |
| Kev Taw Qhia Dav Hlau (X-axis) | 47 ± 2 hli |
Cov ntawv thov
LNOI wafers siv rau ntau yam kev siv vim lawv cov khoom tshwj xeeb, tshwj xeeb tshaj yog nyob rau hauv cov teb ntawm photonics, kev sib txuas lus, thiab quantum technologies. Qee qhov kev siv tseem ceeb suav nrog:
Kev Sib Koom Ua Ke Optics:LNOI wafers siv dav hauv cov voj voog kho qhov muag sib xyaw ua ke, qhov chaw uas lawv ua rau muaj kev ua tau zoo ntawm cov khoom siv photonic xws li modulators, waveguides, thiab resonators. Cov khoom siv kho qhov muag tsis sib xws ntawm lithium niobate ua rau nws yog qhov kev xaiv zoo heev rau cov ntawv thov uas xav tau kev tswj lub teeb zoo.
Kev Sib Txuas Lus:LNOI wafers siv rau hauv cov khoom siv kho qhov muag, uas yog cov khoom tseem ceeb hauv cov kab ke sib txuas lus ceev ceev, suav nrog cov tes hauj lwm fiber optic. Lub peev xwm los hloov lub teeb ntawm cov zaus siab ua rau LNOI wafers zoo tagnrho rau cov kab ke sib txuas lus niaj hnub.
Kev suav lej Quantum:Hauv cov thev naus laus zis quantum, LNOI wafers yog siv los tsim cov khoom rau cov khoos phis tawj quantum thiab cov kab ke sib txuas lus quantum. Cov khoom siv optical nonlinear ntawm LNOI raug siv los tsim cov khub photon entangled, uas yog qhov tseem ceeb rau kev faib tawm quantum key thiab quantum cryptography.
Cov Sensors:LNOI wafers siv rau hauv ntau yam kev siv sensing, suav nrog optical thiab acoustic sensors. Lawv lub peev xwm los cuam tshuam nrog lub teeb thiab suab ua rau lawv siv tau rau ntau hom kev siv sensing.
Cov Lus Nug Feem Ntau
Q:LNOI thev naus laus zis yog dab tsi?
A: Cov thev naus laus zis LNOI cuam tshuam txog kev hloov cov zaj duab xis lithium niobate nyias nyias mus rau hauv cov khoom siv rwb thaiv tsev, feem ntau yog silicon. Cov thev naus laus zis no siv cov khoom tshwj xeeb ntawm lithium niobate, xws li nws cov yam ntxwv siab nonlinear optical, piezoelectricity, thiab pyroelectricity, ua rau nws zoo tagnrho rau kev sib xyaw ua ke optics thiab kev sib txuas lus.
Q:Qhov txawv ntawm LNOI thiab SOI wafers yog dab tsi?
A: Ob qho tib si LNOI thiab SOI wafers zoo sib xws hauv qhov lawv muaj ib txheej nyias nyias ntawm cov khoom sib txuas rau lub substrate. Txawm li cas los xij, LNOI wafers siv lithium niobate ua cov khoom siv zaj duab xis nyias, thaum SOI wafers siv silicon. Qhov sib txawv tseem ceeb yog nyob rau hauv cov khoom ntawm cov khoom siv zaj duab xis nyias, nrog LNOI muab cov khoom zoo tshaj plaws optical thiab piezoelectric.
Q:Cov txiaj ntsig ntawm kev siv LNOI wafers yog dab tsi?
A: Cov txiaj ntsig tseem ceeb ntawm LNOI wafers suav nrog lawv cov khoom siv kho qhov muag zoo heev, xws li cov coefficients optical nonlinear siab, thiab lawv lub zog kho tshuab. Cov yam ntxwv no ua rau LNOI wafers zoo tagnrho rau kev siv hauv kev siv ceev ceev, zaus siab, thiab quantum.
Q:Puas siv tau LNOI wafers rau cov ntawv thov quantum?
A: Yog lawm, LNOI wafers siv dav hauv cov thev naus laus zis quantum vim lawv muaj peev xwm tsim cov khub photon sib txuas thiab lawv qhov sib xws nrog cov photonics sib xyaw. Cov khoom no yog qhov tseem ceeb rau cov ntawv thov hauv kev suav lej quantum, kev sib txuas lus, thiab cryptography.
Q:Cov zaj duab xis LNOI tuab npaum li cas?
A: Cov yeeb yaj kiab LNOI feem ntau muaj qhov tuab ntawm ob peb puas nanometers mus rau ntau micrometers, nyob ntawm seb daim ntawv thov tshwj xeeb yog dab tsi. Qhov tuab no raug tswj thaum lub sijhawm ua cov txheej txheem ion implantation.
