Mndandanda wa Eo Modulator: Chifukwa chiyani lithiamu niobate imatchedwa silicon yowala

Lithium niobate imadziwikanso kuti optical silicon. Pali mwambi wakuti “lithium niobate ndi kulankhulana kwa kuwala monga momwe silicon ilili kwa ma semiconductors.” Kufunika kwa silicon pakusintha kwa zamagetsi, ndiye nchiyani chomwe chimapangitsa makampaniwa kukhala ndi chiyembekezo chotere pa zinthu za lithiamu niobate?

Lithium niobate (LiNbO3) imadziwika kuti "silicon yowala" mumakampani. Kuwonjezera pa ubwino wachilengedwe monga kukhazikika kwabwino kwa thupi ndi mankhwala, zenera lalikulu lowonekera bwino (0.4m ~ 5m), ndi coefficient yayikulu ya electro-optical (33 = 27 pm/V), lithiamu niobate ndi mtundu wa kristalo wokhala ndi zinthu zambiri zopangira komanso mtengo wotsika. Imagwiritsidwa ntchito kwambiri mu zosefera zapamwamba, zida zamagetsi, malo osungira holographic, chiwonetsero cha 3D holographic, zida zowunikira zopanda mzere, kulumikizana kwa quantum ndi zina zotero. Pankhani yolumikizirana ndi kuwala, lithiamu niobate imagwira ntchito makamaka ngati kuwala kwa modulation, ndipo yakhala chinthu chofunikira kwambiri mu modulator yamagetsi yothamanga kwambiri (Eo Modulator) msika.

Pakadali pano, pali ukadaulo waukulu atatu wosinthira kuwala mumakampani: ma modulators a electro-optical (Eo Modulator) ozikidwa pa kuwala kwa silicon, indium phosphide ndilithiamu niobatensanja zakuthupi. Silicon optical modulator imagwiritsidwa ntchito makamaka mu ma module a transceiver olumikizirana deta afupiafupi, indium phosphide modulator imagwiritsidwa ntchito makamaka mu ma module a transceiver olumikizirana optical network apakatikati ndi aatali, ndipo lithiamu niobate electro-optical modulator (Eo Modulator) imagwiritsidwa ntchito kwambiri mu kulumikizana kwabwino kwa backbone network ndi ma data a single-wave 100/200Gbps. Pakati pa nsanja zitatu zapamwambazi, thin film lithium niobate modulator yomwe yatuluka m'zaka zaposachedwa ili ndi ubwino wa bandwidth womwe zinthu zina sizingafanane nawo.

Lithium niobate ndi mtundu wa chinthu chosapangidwa, njira ya mankhwalaLiNbO3, ndi kristalo yoyipa, kristalo ya ferroelectric, kristalo ya lithiamu niobate yokhala ndi piezoelectric, ferroelectric, photoelectric, nonlinear optics, thermoelectric ndi zina mwazinthuzo, nthawi yomweyo yokhala ndi photorefractive effect. Kristalo ya lithiamu niobate ndi imodzi mwa zipangizo zatsopano zosagwiritsidwa ntchito kwambiri, ndi chinthu chabwino chosinthira mphamvu ya piezoelectric, ferroelectric, electro-optical, lithiamu niobate monga chinthu cha electro-optical mu kulumikizana kwa kuwala chimagwira ntchito pakusinthasintha kwa kuwala.

Zipangizo za lithiamu niobate, zomwe zimadziwika kuti "optical silicon", zimagwiritsa ntchito njira yaposachedwa ya micro-nano kuti zipange nthunzi ya silicon dioxide (SiO2) pa silicon substrate, kumangirira substrate ya lithiamu niobate pa kutentha kwakukulu kuti apange malo osweka, kenako ndikuchotsa filimu ya lithiamu niobate. Modulator ya lithiamu niobate yopyapyala yokonzedwa ili ndi ubwino wa kugwira ntchito bwino, mtengo wotsika, kukula kochepa, kupanga zinthu zambiri, komanso kugwirizana ndi ukadaulo wa CMOS, ndipo ndi njira yopikisana yolumikizirana kwamphamvu kwambiri mtsogolo.

Ngati pakati pa kusintha kwa zamagetsi patchulidwa dzina lake kuchokera ku zinthu za silicon zomwe zinapangitsa kuti izi zitheke, ndiye kuti kusintha kwa photonics kungayambike ku zinthu za lithiamu niobate, zomwe zimadziwika kuti "silicon yowala" lithiamu niobate ndi chinthu chowonekera chopanda utoto chomwe chimaphatikiza zotsatira za photorefractive, zotsatira zosakhala za mzere, zotsatira za electro-optical, zotsatira za acousto-optical, zotsatira za piezoelectric ndi zotsatira za kutentha. Zambiri mwa zinthu zake zimatha kulamulidwa ndi kapangidwe ka kristalo, doping ya element, valence state control ndi zina. Amagwiritsidwa ntchito kwambiri pokonzekera optical waveguide, optical switch, piezoelectric modulator,modulator yamagetsi ndi kuwala, jenereta yachiwiri ya harmonic, chochulukitsa ma frequency a laser ndi zinthu zina. Mumakampani olumikizirana ndi kuwala, ma modulators ndi msika wofunikira kwambiri wa lithiamu niobate.