Waxqabadka sare ee koronto-optic modulator: filim khafiif ah lithium niobate modulator

Waxqabadka sare ee koronto-optic modulator:filim khafiif ah lithium niobate modulator

Modulator-ka elektiroonigga ah (EOM modulatore) waa modulator la sameeyay iyadoo la adeegsanayo saamaynta korantada-optical-ka ee kiristaalo-electro-optical-ka qaarkood, kaas oo u rogi kara calaamadaha elektarooniga ah ee xawaaraha sare leh ee aaladaha isgaadhsiinta una beddela calaamadaha indhaha. Marka crystal electro-optic lagu sakhiray beer koronto codsatay, index refractive ee kristal electro-optic ayaa isbedeli doona, iyo sifooyinka mawjada indhaha ee crystal sidoo kale bedeli doonaa si waafaqsan, si loo ogaado modulation ee baaxadda, wajiga iyo gobolka polarization ee signalka indhaha, oo u beddelo signalka xawaaraha sare ee elektarooniga ah ee qalabka isgaarsiinta galay signal indhaha iyada oo loo marayo modulation.

Waqtigan xaadirka ah, waxaa jira saddex nooc oo waaweyn oo ahmodulators electro-opticsuuqa: modulators silicon-based, modulators indium fosfide modulators iyo filim khafiif ahmodulator lithium niobate. Waxaa ka mid ah, Silicon ma laha isku-dhafka elektaroonigga ah ee tooska ah, waxqabadka ayaa ah mid guud, kaliya ku habboon wax-soo-saarka modulator-ka gudbinta xogta fogaanta-gaaban, phosphide indium inkasta oo ku habboon moduleka isgaarsiinta indhaha ee fogaanta-dheer, laakiin shuruudaha habka is-dhexgalka ayaa aad u sarreeya, qiimaha waa mid aad u sarreeya, codsigu wuxuu ku xiran yahay xaddidaadyo gaar ah. Taas bedelkeeda, lithium niobate crystal ma aha oo kaliya hodan ku saamaynta photoelectric, dhigay saamaynta photorefractive, saamayn aan toos ahayn, saamaynta electro-optical, saamaynta acoustic indhaha, saamaynta piezoelectric iyo saamaynta thermoelectric waa siman yihiin in hal, iyo mahad ay qaab-dhismeedka shabagga ah iyo qaab-dhismeedka cillad hodan, hantida badan ee lithium niobate si weyn loo nidaamiyo karaa by crystalvalle ka kooban yahay, element maamulka photochieve, iwm. iskudhafka elektaroonigga ah ee ilaa 30.9pm / V, si aad ah uga sarreeya indium phosphide, oo leh saameyn yar oo qaylo ah (saamaynta cirridka: waxaa loola jeedaa ifafaale in inta jeer ee ku dhex jirta garaaca wadnaha uu isbeddelo waqtiga inta lagu jiro habka gudbinta garaaca wadnaha laysarka. Saamaynta weyn ee qaylada waxay keentaa hoos u dhigista signal-to-qeylada iyo saamiga korontadu ee dhexdhexaadka ah ee gobolka) celceliska saamiga "saameynta koronto" ee gobolka. xaaladdeeda “off”), iyo xasilloonida aaladda sare. Intaa waxaa dheer, habka shaqada ee modulator-ka filimka khafiifka ah ee lithium niobate modulator wuxuu ka duwan yahay kan modulator-ku-salaysan ee silikoon iyo modulator indium phosphide modulator iyadoo la adeegsanayo hababka qaabaynta aan tooska ahayn, taas oo adeegsata saamaynta korantada ee tooska ah si ay ugu dhejiso calaamadda korantada ee korantada ee koriyaha indhaha, iyo heerka isbeddelka inta badan waxaa lagu go'aamiyaa waxqabadka korantada elektiroonigga ah iyo isticmaalka xawaaraha sare ee microwave si fiican. Iyada oo ku saleysan kor ku xusan, lithium niobate waxay noqotay doorasho ku habboon diyaarinta wax-qabadka sare ee qalabka elektiroonigga ah, kaas oo leh codsiyo badan oo kala duwan oo ku jira shabakadaha isgaarsiinta indhaha ee 100G/400G iyo xarumaha xogta aadka u sarreeya, waxayna gaari kartaa masaafo dheer oo gudbin ah oo ka badan 100 kiiloomitir.

Lithium niobate oo ah walxo qallafsan oo ka mid ah "kacaanka sawir-qaadista", inkasta oo la barbar dhigo silikoon iyo fosfid indium waxay leedahay faa'iidooyin badan, laakiin inta badan waxay u muuqataa qaab qalab badan oo qalab ah, iftiinku wuxuu ku kooban yahay waveguide diyaaradeed oo ay sameeyeen faafinta ion ama proton sarrifka, farqiga index refractive inta badan waa mid yar (qiyaastii 0.02) cabbirka qalabka waa weyn yahay. Way adag tahay in la daboolo baahiyaha miniaturization iyo isdhexgalkaqalabka indhaha, iyo xariiqeeda wax soo saarku wali way ka duwan tahay habka microelectronics ee dhabta ah, waxaana jira dhibaato qiimo sare leh, sidaas darteed samaynta filimka khafiifka ah waa jihada horumarinta muhiimka ah ee lithium niobate ee loo isticmaalo modulators electro-optical.