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Transparent on-waveguide electrical interconnects in SiN-photonic platform

TitleTransparent on-waveguide electrical interconnects in SiN-photonic platform
Publication TypeJournal Article
Year of Publication2019
AuthorsDash, A, Gangavarapu, PRYasasvi, , , Selvaraja, SK, Naik, AK
JournalOptics Communications
KeywordsCarbon nanotubes Electrical interconnects Silicon nitride micro-ring resonator Optical waveguides Photonics

We demonstrate transparent in-contact electrical interconnects over SiN micro-ring resonators using metallic carbon nano-tubes (CNTs). Self-assembled stripes of metallic CNTs are directly in contact with the waveguide operating around

wavelength. The absorption by the CNTs around

is negligible for a coverage of about

of the micro-ring. The optical performance of the resonator is unaffected till a current density of

. Semi-conducting CNTs with a similar coverage also have negligible absorption around

. These metallic and semi-conducting CNTs hold promise for the implementation of transparent electronic circuits over SiN-photonic platform.