8inch LNOI (LiNbO3 pa Insulator) Wafer ya Optical Modulators Waveguides Integrated Circuits
Chithunzi Chatsatanetsatane
Chiyambi
Ma wafer a Lithium Niobate on Insulator (LNOI) ndi zinthu zamakono zomwe zimagwiritsidwa ntchito m'njira zosiyanasiyana zamakono komanso zamagetsi. Ma wafer amenewa amapangidwa potumiza wosanjikiza woonda wa lithiamu niobate (LiNbO₃) pa chinthu chotetezera kutentha, makamaka silicon kapena chinthu china choyenera, pogwiritsa ntchito njira zamakono monga kuyika ma ion ndi ma wafer bonding. Ukadaulo wa LNOI umafanana kwambiri ndi ukadaulo wa Silicon on Insulator (SOI) wafer koma umagwiritsa ntchito mphamvu zapadera za lithiamu niobate, chinthu chodziwika ndi mawonekedwe ake a piezoelectric, pyroelectric, ndi nonlinear optical.
Ma wafer a LNOI atchuka kwambiri m'magawo monga ma optics ophatikizidwa, ma telecommunication, ndi quantum computing chifukwa cha magwiridwe antchito awo apamwamba kwambiri pamagwiritsidwe ntchito a pafupipafupi komanso othamanga kwambiri. Ma wafer amapangidwa pogwiritsa ntchito njira ya "Smart-cut", yomwe imalola kuwongolera molondola makulidwe a filimu yopyapyala ya lithiamu niobate, kuonetsetsa kuti ma wafer akukwaniritsa zofunikira pa ntchito zosiyanasiyana.
Mfundo yaikulu
Njira yopangira ma LNOI wafers imayamba ndi kristalo wa lithiamu niobate wambiri. Kristalo imayikidwa mu ion, komwe ma ion a helium amphamvu kwambiri amalowetsedwa pamwamba pa kristalo wa lithiamu niobate. Ma ion awa amalowa mu kristalo mpaka kuzama kwinakwake ndikusokoneza kapangidwe ka kristalo, ndikupanga malo ofooka omwe pambuyo pake angagwiritsidwe ntchito kugawa kristalo m'zigawo zoonda. Mphamvu yeniyeni ya ma ion a helium imalamulira kuzama kwa kuyikika, komwe kumakhudza mwachindunji makulidwe a gawo lomaliza la lithiamu niobate.
Pambuyo poika ma ion, kristalo ya lithiamu niobate imalumikizidwa ku substrate pogwiritsa ntchito njira yotchedwa wafer bonding. Njira yolumikizira nthawi zambiri imagwiritsa ntchito njira yolumikizira mwachindunji, pomwe malo awiriwa (kristalo ya lithiamu niobate yolumikizidwa ndi ion ndi substrate) amakanikizidwa pamodzi pansi pa kutentha kwakukulu ndi kupanikizika kuti apange mgwirizano wolimba. Nthawi zina, zinthu zomatira monga benzocyclobutene (BCB) zingagwiritsidwe ntchito powonjezera chithandizo.
Pambuyo polumikizana, wafer imadutsa mu njira yolumikizira kuti ikonze kuwonongeka kulikonse komwe kwachitika chifukwa cha kuyika kwa ayoni ndikuwonjezera mgwirizano pakati pa zigawo. Njira yolumikizira imathandizanso kuti gawo lopyapyala la lithiamu niobate lichoke pa kristalo yoyambirira, ndikusiya gawo lopyapyala komanso lapamwamba la lithiamu niobate lomwe lingagwiritsidwe ntchito popanga chipangizocho.
Mafotokozedwe
Ma wafer a LNOI ali ndi zinthu zingapo zofunika zomwe zimawatsimikizira kuti ndi oyenera kugwiritsidwa ntchito bwino kwambiri. Izi zikuphatikizapo:
Zofotokozera za Zinthu
| Zinthu | Mafotokozedwe |
| Zinthu Zofunika | Yofanana: LiNbO3 |
| Ubwino wa Zinthu | Ma thovu kapena zinthu zophatikizidwa <100μm |
| Kuyang'ana | Kudula kwa Y ±0.2° |
| Kuchulukana | 4.65 g/cm³ |
| Kutentha kwa Curie | 1142 ±1°C |
| Kuwonekera | >95% mu 450-700 nm (kukhuthala kwa 10 mm) |
Zofunikira pa Kupanga
| Chigawo | Kufotokozera |
| M'mimba mwake | 150 mm ± 0.2 mm |
| Kukhuthala | 350 μm ±10 μm |
| Kusalala | <1.3 μm |
| Kusiyana Kwa Kukhuthala Konse (TTV) | M'mbali <70 μm @ 150 mm wafer |
| Kusiyana kwa Kukhuthala Kwapafupi (LTV) | <70 μm @ 150 mm wafer |
| Kuuma | Rq ≤0.5 nm (mtengo wa AFM RMS) |
| Ubwino Wapamwamba | 40-20 |
| Tinthu (Sitingachotsedwe) | Tinthu tating'onoting'ono ta 100-200 μm ≤3 |
| Ma Chips | <300 μm (wafer yonse, palibe malo ochotsera) |
| Ming'alu | Palibe ming'alu (wafer yonse) |
| Kuipitsidwa | Palibe madontho osachotsedwa (wafer yonse) |
| Kufanana | |
| Mzere Wofotokozera wa Kuwongolera (X-axis) | 47 ± 2 mm |
Mapulogalamu
Ma wafer a LNOI amagwiritsidwa ntchito m'njira zosiyanasiyana chifukwa cha mawonekedwe awo apadera, makamaka m'magawo a photonics, telecommunications, ndi quantum technology. Zina mwa ntchito zofunika kwambiri ndi izi:
Ma Optics Ophatikizidwa:Ma wafer a LNOI amagwiritsidwa ntchito kwambiri m'mabwalo olumikizirana a optical, komwe amathandizira zida zapamwamba za photonic monga ma modulators, ma waveguides, ndi ma resonators. Kapangidwe kake ka kuwala kosakhala kolunjika ka lithiamu niobate kamapangitsa kuti ikhale chisankho chabwino kwambiri pakugwiritsa ntchito komwe kumafuna kusintha bwino kwa kuwala.
Kulankhulana ndi mafoni:Ma wafer a LNOI amagwiritsidwa ntchito mu ma modulators a optical, omwe ndi zinthu zofunika kwambiri mu machitidwe olumikizirana othamanga kwambiri, kuphatikizapo ma network a fiber optic. Kutha kusintha kuwala pama frequency apamwamba kumapangitsa ma wafer a LNOI kukhala abwino kwambiri pamachitidwe amakono olumikizirana.
Kuwerengera kwa Quantum:Mu ukadaulo wa quantum, ma wafer a LNOI amagwiritsidwa ntchito popanga zida zamakompyuta a quantum ndi machitidwe olumikizirana a quantum. Makhalidwe osakhala a mzere wa LNOI amagwiritsidwa ntchito popanga ma photon pairs ogwirizana, omwe ndi ofunikira kwambiri pakugawa makiyi a quantum ndi quantum cryptography.
Masensa:Ma wafer a LNOI amagwiritsidwa ntchito m'njira zosiyanasiyana zodziwira, kuphatikizapo masensa owonera ndi omveka. Kutha kwawo kuyanjana ndi kuwala ndi phokoso kumawapangitsa kukhala osinthika pamitundu yosiyanasiyana yaukadaulo wodziwira.
FAQ
Q:Kodi ukadaulo wa LNOI ndi chiyani?
Ukadaulo wa A:LNOI umaphatikizapo kusamutsa filimu yopyapyala ya lithiamu niobate pa chinthu choteteza kutentha, chomwe nthawi zambiri chimakhala silicon. Ukadaulo uwu umagwiritsa ntchito mawonekedwe apadera a lithiamu niobate, monga mawonekedwe ake apamwamba osakhala a mzere, piezoelectricity, ndi pyroelectricity, zomwe zimapangitsa kuti ikhale yoyenera kugwiritsa ntchito ma optics ophatikizika ndi ma telecommunication.
Q:Kodi kusiyana pakati pa ma wafer a LNOI ndi SOI ndi kotani?
A: Ma wafer onse a LNOI ndi SOI ndi ofanana chifukwa amakhala ndi zinthu zopyapyala zolumikizidwa ku substrate. Komabe, ma wafer a LNOI amagwiritsa ntchito lithiamu niobate ngati zinthu zopyapyala zopyapyala, pomwe ma wafer a SOI amagwiritsa ntchito silicon. Kusiyana kwakukulu kuli mu mawonekedwe a zinthu zopyapyala zopyapyala, ndipo LNOI imapereka mawonekedwe abwino kwambiri a kuwala ndi piezoelectric.
Q:Kodi ubwino wogwiritsa ntchito ma wafer a LNOI ndi wotani?
A: Ubwino waukulu wa ma wafer a LNOI ndi monga mawonekedwe awo abwino kwambiri, monga ma coefficients apamwamba osakhala a mzere, komanso mphamvu zawo zamakaniko. Makhalidwe amenewa amapangitsa ma wafer a LNOI kukhala abwino kwambiri kugwiritsidwa ntchito pa ntchito zothamanga kwambiri, zamafupipafupi, komanso zama quantum.
Q:Kodi ma wafer a LNOI angagwiritsidwe ntchito pa ntchito za quantum?
A: Inde, ma wafer a LNOI amagwiritsidwa ntchito kwambiri muukadaulo wa quantum chifukwa cha kuthekera kwawo kupanga ma photon awiri osakanikirana komanso kugwirizana kwawo ndi ma photonics ophatikizidwa. Makhalidwe amenewa ndi ofunikira kwambiri pakugwiritsa ntchito quantum computing, kulumikizana, ndi cryptography.
Q:Kodi makulidwe a mafilimu a LNOI ndi otani?
Makanema a A:LNOI nthawi zambiri amakhala ndi makulidwe kuyambira mazana angapo a nanometers mpaka ma micrometer angapo, kutengera momwe amagwiritsidwira ntchito. Kukhuthala kumayendetsedwa panthawi yoyika ma ion.
