Ci gaban bincike na siraran fim na lithium niobate electro-optic modulator

Ci gaban bincike nasiririn fim na lithium niobate electro-optic modulator

Mai daidaita hasken lantarki shine babban na'urar sadarwa ta gani da kuma tsarin microwave photonic. Yana daidaita hasken da ke yaɗuwa a cikin sararin samaniya ko jagorar raƙuman haske ta hanyar canza ma'aunin haske na kayan da filin lantarki da aka yi amfani da shi ke haifarwa.na'urar sarrafa haske ta lantarki (electro-optical modulator)yana amfani da babban kayan lithium niobate a matsayin kayan lantarki. Ana amfani da kayan lithium niobate guda ɗaya na lu'ulu'u don samar da jagorar wave ta hanyar watsawa ta titanium ko tsarin musayar proton. Bambancin ma'aunin haske tsakanin babban layin da layin rufewa ƙarami ne, kuma jagorar wave yana da ƙarancin ikon ɗaurewa ga filin haske. Jimlar tsawon na'urar lantarki mai haɗawa da electro-optic yawanci shine 5-10 cm.

Fasahar Lithium Niobate akan Insulator (LNOI) tana ba da hanya mai inganci don magance matsalar girman babban lithium niobate electro-optic modulator. Bambancin ma'aunin refractive tsakanin babban layin waveguide da layin cladding ya kai har zuwa 0.7, wanda ke haɓaka ƙarfin ɗaure yanayin gani da tasirin electro-optic na jagorar waveguide, kuma ya zama wurin bincike a fagen electro-optic modulator.

Saboda ci gaban fasahar kere-kere, haɓaka na'urorin lantarki masu amfani da wutar lantarki bisa dandamalin LNOI ya sami ci gaba cikin sauri, yana nuna yanayin ƙaramin girma da ci gaba da inganta aiki. Dangane da tsarin jagorar waveguide da aka yi amfani da shi, na'urorin lantarki masu amfani da wutar lantarki na lithium niobate na yau da kullun sune na'urorin lantarki masu amfani da wutar ....masu gyaran jagorar raƙuman ruwada kuma na'urorin lantarki masu amfani da na'urorin lantarki masu haɗakar silicon.

A halin yanzu, inganta tsarin etching busasshen fim yana rage asarar fim mai sirara lithium niobate waveguide sosai, hanyar loda ridge tana magance matsalar wahalar tsarin etching mai yawa, kuma ta gano cewa lithium niobate electro-optic modulator tare da ƙarfin lantarki ƙasa da 1 V rabin wave, kuma haɗin gwiwa da fasahar SOI mai girma ya dace da yanayin haɗin photon da electron hybrid. Fasahar lithium niobate mai sirara tana da fa'idodi wajen cimma ƙarancin asara, ƙaramin girma da babban bandwidth hadedde electro-optic modulator akan guntu. A ka'ida, an annabta cewa 3mm thin film lithium niobate push-pullMai daidaita M⁃Z3dB electro-optical bandwidth zai iya kaiwa har zuwa 400 GHz, kuma an ruwaito cewa bandwidth na siririn fim lithium niobate modulator da aka shirya da gwaji ya wuce 100 GHz, wanda har yanzu yana da nisa da babban ka'idar. Ingantaccen da aka samu ta hanyar inganta sigogin tsari na asali yana da iyaka. A nan gaba, daga mahangar bincika sabbin hanyoyi da tsare-tsare, kamar tsara daidaitaccen electrode na coplanar waveguide electrode a matsayin electrode na microwave da aka raba, aikin modulator na iya ƙara inganta.

Bugu da ƙari, fahimtar marufi na guntu na modulator da haɗin kai daban-daban tare da lasers, na'urori masu ganowa da sauran na'urori dama ce kuma ƙalubale ga ci gaban masu gyaran lithium niobate na fim na gaba. Mai gyaran lithium niobate na lantarki zai taka muhimmiyar rawa a cikin microwave photon, sadarwa ta gani da sauran fannoni.