Abstract
We design surface plasmon polariton (SPP) absorption modulators using monolayer graphene as the active layer in the 1.5 µm telecommunication wavelength window. Modulation is achieved by electrically modulating the Fermi energy level in the graphene layer. We investigated a silver slab SPP waveguide on graphene and found that there are limitations on the modulation performance as the guided mode only weakly interacts with the graphene layer. To overcome these limitations, we propose a silver–air–silver SPP waveguide on graphene configuration. We show that the latter design can achieve a two times improvement in the figure of merit, defined by the ratio of the extinction ratio to the voltage-off propagation loss, compared to previous indium–tin oxide based SPP absorption modulators.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
