Photonics Research, Volume. 5, Issue 5, 494(2017)

Ultra-thin Bloch-surface-wave-based reflector at telecommunication wavelength

R. Dubey1、*, B. Vosoughi Lahijani1, M. H?yrinen2, M. Roussey2, M. Kuittinen2, and H. P. Herzig1
Author Affiliations
  • 1Optics & Photonics Technology Laboratory (OPT), école Polytechnique Fédérale de Lausanne (EPFL), rue de la Maladière 71b, CH-2002 Neuchatel, Switzerland
  • 2Institute of Photonics, University of Eastern Finland, P.O. Box 111, 80101 Joensuu, Finland
  • show less
    Figures & Tables(5)
    Schematic of the setup of the TIR configuration for BSW coupling with dielectric multilayers deposited on a glass wafer. The 2D grating patterned in the waveguide is fabricated on the top of the multilayers into a 60-nm-thick TiO2 layer. The SNOM probe, in collection mode, is used to observe the interaction of the BSW with the grating in the near field.
    Simulations using CST Microwave Studio, FDTD method. (a) Field amplitude distribution over the waveguide at a wavelength of λ=1500 nm, (b) field amplitude distribution over the waveguide at the Bragg wavelength λ=1553 nm.
    Near-field images acquired by MH-SNOM at the Bragg wavelength λ=1553 nm. (a) Field amplitude distribution over the waveguide grating; (b) cross section of the field amplitude in the y direction, along the waveguide; (c) high-resolution amplitude scan in the area indicated by the black rectangle in (a); (d) cross section of the field amplitude in the y direction of (c); (e) measured corresponding phase plot representing a standing wave generated by the interference of the incident and the backreflected BSW mode.
    Fourier spectrum computed on the complex field amplitude of the interference fringes [in Fig. 3(c)] at the Bragg wavelength λ=1553 nm. The peaks corresponds to the wavenumbers (fs) of two counterpropagating BSWs.
    Near-field images acquired by MH-SNOM at a wavelength of λ=1500 nm. (a) Field amplitude distribution over the waveguide grating; (b) cross section of the field amplitude in the y direction along the waveguide; (c) high-resolution amplitude scan in the area indicated by the black rectangle in (a); (d) cross section of the field amplitude in the y direction of (c); (e) phase plot showing propagating plane wave behavior that indicates very weak reflection at 1500 nm.
    Tools

    Get Citation

    Copy Citation Text

    R. Dubey, B. Vosoughi Lahijani, M. H?yrinen, M. Roussey, M. Kuittinen, H. P. Herzig. Ultra-thin Bloch-surface-wave-based reflector at telecommunication wavelength[J]. Photonics Research, 2017, 5(5): 494

    Download Citation

    EndNote(RIS)BibTexPlain Text
    Save article for my favorites
    Paper Information

    Category: Optics at Surfaces

    Received: Jul. 12, 2017

    Accepted: Aug. 30, 2017

    Published Online: Sep. 30, 2017

    The Author Email: R. Dubey (richa.dubey@epfl.ch)

    DOI:10.1364/PRJ.5.000494

    Topics