Mapping the optical properties of slab-type two-dimensional photonic crystal waveguides

Eric Dulkeith, Sharee J. McNab, Yurii A. Vlasov

Research output: Contribution to journalArticlepeer-review

Abstract

We report on systematic experimental mapping of the transmission properties of two-dimensional silicon-on-insulator photonic crystal waveguides for a broad range of hole radii, slab thicknesses, and waveguide lengths for both TE and TM polarizations. Detailed analysis of numerous spectral features allows a direct comparison of experimental data with three-dimensional plane-wave and finite-difference time-domain calculations. We find that the bandwidth for low-loss propagation completely vanishes for structural parameters where the photonic band gap is maximized. Our results demonstrate that in order to maximize the bandwidth of low-loss waveguiding the hole radius must be significantly reduced. While the photonic band gap considerably narrows, the bandwidth of low-loss propagation in PhC waveguides is increased up to 125nm with losses as low as 8±2dB/cm.

Original languageEnglish (US)
Article number115102
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume72
Issue number11
DOIs
StatePublished - Sep 15 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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