Photonic crystal materials attracted much attention in the past few years with the number of publications and patents increasing exponentially. Two-dimensional (2D) photonic crystal structures, like holey fibers and 2D slab-type photonic crystals, are probably the most advanced and fast developing areas owing to mature fabrication methods and envisioned broad applications. They are now at a critical phase of their development as they move fast from the realm of fundamental studies to photonic devices and commercialization. The idea behind this workshop is to look at both fiber and 2D waveguide geometries and explore some of the most important and interesting issues related to implementation of these optical structures as photonic devices.