Title :
Photonic crystal waveguides in triangular lattice of nanopillars
Author :
Chigrin, Dmitry N. ; Lavrinenko, Andrei V.
Author_Institution :
Inst. of Mater. Sci., Wuppertal Univ., Germany
Abstract :
Photonic nanopillar waveguides have been analysed. Dielectric nanopillars are arranged in such way that they form a triangular lattice of 2D photonic crystal. Dispersion of the modes depends on the direction of the triangular lattice, Γ-J or Γ-X, in which the nanopillar arrays are extended. Light fields are confined within the nanopillar arrays and guided by reflection. Interaction of 1-row nanopillar waveguides gives rise to the coupling phenomena followed by the splitting of modes, anticrossing effect, folding of modes at the edge of the Brillouin zone and mini stopband formation. Transmission spectra calculated by the FDTD method completely reflect the peculiarities of mode dispersion, showing up to 80% transmission for a realistic SOI nanopillar structure.
Keywords :
Brillouin zones; finite difference time-domain analysis; optical dispersion; optical waveguide theory; optical waveguides; photonic crystals; silicon-on-insulator; 2D photonic crystal; Brillouin zone; FDTD method; SOI nanopillar structure; anticrossing effect; coupling phenomena; dielectric nanopillars; mini stopband formation; mode dispersion; mode folding; mode splitting; nanopillar arrays; photonic crystal waveguides; photonic nanopillar waveguides; transmission spectra; triangular nanopillar lattice; Dielectrics; Fabrication; Finite difference methods; Lattices; Nanostructures; Optical arrays; Optical losses; Optical reflection; Photonic crystals; Waveguide theory;
Conference_Titel :
Transparent Optical Networks, 2004. Proceedings of 2004 6th International Conference on
Print_ISBN :
0-7803-8343-5
DOI :
10.1109/ICTON.2004.1361984
