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

Ci gaban bincike nabakin bakin fim lithium niobate electro-optic modulator

Electro-optic modulator shine ainihin na'urar tsarin sadarwa na gani da tsarin photonic microwave. Yana sarrafa hasken da ke yaɗawa a cikin sarari kyauta ko jagorar igiyar gani ta hanyar canza fihirisar abubuwan da ke haifar da filin lantarki. Lithium niobate na gargajiyaelectro-Optical modulatoryana amfani da babban kayan lithium niobate azaman kayan gani na lantarki. Kayan lithium niobate kristal guda ɗaya ana yin su ne a cikin gida don samar da waveguide ta hanyar yaduwar titanium ko tsarin musayar proton. Bambance-bambancen fihirisa mai jujjuyawar da ke tsakanin babban Layer da faifan faifai ƙanƙanta ne, kuma jagorar igiyar igiyar ruwa tana da ƙarancin ɗauri ga filin haske. Jimlar tsawon fakitin na'urar motsa jiki ta lantarki yawanci shine 5 ~ 10 cm.

Lithium Niobate akan fasahar Insulator (LNOI) yana ba da ingantacciyar hanya don magance matsalar girman girman lithium niobate electro-optic modulator. Bambance-bambancen fihirisar ratsawa tsakanin waveguide core Layer da cladding Layer ya kai 0.7, wanda ke haɓaka ikon ɗaurin yanayin yanayin gani sosai da tasirin tsarin tsarin lantarki na waveguide, kuma ya zama wurin bincike a fagen na'ura mai sarrafa lantarki.

Saboda ci gaban fasahar kere-kere, haɓaka na'urori masu amfani da lantarki da ke kan dandamali na LNOI ya sami ci gaba cikin sauri, yana nuna yanayin ƙarami mai ƙarfi da ci gaba da haɓaka aiki. Dangane da tsarin waveguide da aka yi amfani da shi, fitaccen fim ɗin lithium niobate electro-optic modulators kai tsaye etched waveguide electro-optic modulators, ɗorawa matasan.waveguide modulatorsda matasan silicon hadedde waveguide electro-optic modulators.

A halin yanzu, inganta bushe etching tsari ƙwarai rage asarar bakin ciki film lithium niobate waveguide, ridge loading Hanyar warware matsalar high etching tsari wahala, kuma ya gane lithium niobate electro-optic modulator tare da wani irin ƙarfin lantarki na kasa da 1 V rabin kalaman, da kuma hade tare da balagagge SOI fasahar bi da Trend na photon hade da electron. Fasahar lithium niobate na fim na bakin ciki yana da fa'ida a cikin fahimtar ƙarancin asara, ƙaramin girman da babban bandwidth hadedde na'urar modulator na gani akan guntu. A ka'ida, an annabta cewa 3mm bakin ciki fim lithium niobate tura-pullM⁃Z modulator's3dB electro-optical bandwidth na iya kaiwa har zuwa 400 GHz, kuma bandwidth na na'urar gwajin gwaji na lithium niobate modulator an ruwaito ya wuce 100 GHz, wanda har yanzu yayi nisa daga babban iyaka. Haɓakawa da aka kawo ta haɓaka ainihin sigogin tsarin yana iyakance. A nan gaba, daga mahangar binciko sabbin hanyoyi da sifofi, kamar zayyana madaidaicin lantarki na coplanar waveguide a matsayin na'urar lantarki mai ɓarna, aikin na'ura na iya ƙara haɓakawa.

Bugu da ƙari, fahimtar marufi na guntu mai haɗawa da haɗaɗɗen haɗin kan-chip tare da lasers, masu ganowa da sauran na'urori duka wata dama ce da ƙalubale ga ci gaban fina-finai na fim ɗin lithium niobate na gaba. Lithium niobate electro-optic modulator na fim na bakin ciki zai taka muhimmiyar rawa a cikin photon microwave, sadarwar gani da sauran fannoni.