Details

Autor(en) / Beteiligte

• Sondergaard, T.
• Arentoft, J.
• Kristensen, M.

Titel

Theoretical analysis of finite-height semiconductor-on-insulator-based planar photonic crystal waveguides

Ist Teil von

• Journal of lightwave technology, 2002-08, Vol.20 (8), p.1619-1626

Ort / Verlag

New York, NY: IEEE

Erscheinungsjahr

2002

Link zum Volltext

• Volltext

Quelle

IEEE Electronic Library (IEL)

Beschreibungen/Notizen

• A planar photonic crystal waveguide based on the semiconductor-on-insulator (SOI) materials system is analyzed theoretically. Two-dimensional (2-D) calculations and comparison with dispersion relations for the media above and below the finite-height waveguide are used to obtain design guidelines. Three-dimensional (3-D) calculations are given for the dispersion relations and field profiles. The field profiles obtained using 2-D and 3-D calculations are qualitatively similar. However, we find that compared with 2-D calculations, the frequencies of the guided modes are shifted and the number of guided modes changes. The theoretically predicted frequency intervals, where the waveguide supports leakage-free guidance of light, are compared with an experimental measurement for propagation losses. Two out of three frequency intervals coincide with low-measured propagation losses. The poor guidance of light for the third frequency interval is explained theoretically by investigating the vertical localization of the guided modes.