title: Super-narrow, extremely high quality collective plasmon resonances at telecom wavelengths and their application in a hybrid graphene-plasmonic modulator.
abstract: We present extremely narrow collective plasmon resonances observed in gold nanostripe arrays fabricated on a thin gold film, with the spectral line full width at half-maximum (fwhm) as low as 5 nm and quality factors Q reaching 300, at important fiber-optic telecommunication wavelengths around 1.5 μm. Using these resonances, we demonstrate a hybrid graphene-plasmonic modulator with the modulation depth of 20% in reflection operated by gating of a single layer graphene, the largest measured so far.
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Benjamin D
authors: BD
authors: Thackray
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Philip A
authors: PA
authors: Thomas
authors: Gregory H
authors: GH
authors: Auton
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Francisco J
authors: FJ
authors: Rodriguez
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Owen P
authors: OP
authors: Marshall
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Vasyl G
authors: VG
authors: Kravets
authors: †School of Physics and Astronomy and ‡School of Computer Science, The University of Manchester, Manchester M13 9PL, U.K.
authors: Alexander N
authors: AN
authors: Grigorenko
keywords: Diffraction coupled; active plasmonics; graphene; modulation; nanoarray; plasmon resonance