A review of the properties of silicon-based two-dimensional (2D) photonic crystals is given,
essentially infinite 2D photonic crystals made from macroporous silicon and photonic crystal
slabs based on silicon-on-insulator basis. We discuss the bulk photonic crystal properties
with particular attention to the light cone and its impact on the band structure. The
application for wave guiding is discussed for both material systems, and compared to
classical waveguides based on index-guiding. Losses of resonant waveguide modes above …