Broadband optical characterization and modeling of photonic crystal waveguides for silicon optical interconnects

• Published in: Journal of applied physics Vol. 95; no. 3; pp. 1606 - 1608
• Main Authors: Zelsmann, M., Picard, E., Charvolin, T., Hadji, E., Heitzmann, M., Dal’zotto, B., Nier, M. E., Seassal, C., Rojo-Romeo, P., Letartre, X.
• Format: Journal Article
• Language: English
• Published: American Institute of Physics 01.02.2004
• ISSN: 0021-8979; 1089-7550
• DOI: 10.1063/1.1630365

Optical properties of a straight 50-row-long photonic crystal waveguide (PCW) are reported. This waveguide is obtained by removing one row of air holes in a triangular lattice two-dimensional photonic crystal etched on a silicon-on-insulator substrate. Transmission measurements are performed on a wide wavelength range (1.15–1.75 μm) with an external white light source. It is found that the experimental data are in very good agreement with both the theoretical transmission calculated by a two-dimensional finite difference time domain method and the theoretical photonic band structure. We show a coupling factor higher than 60% between a monomode ridge waveguide and the PCW.