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Recent progresses in photonic crystals including both three-dimensional (3D) and two-dimensional (2D) crystals are reviewed. On 3D photonic crystals, we at first explain our approach to create full 3D bandgap crystals at near-infrared wavelengths, and then the introduction of the light-emitters into 3D crystals. On 2D crystals, two types of devices are explained. One is channel-add-drop-filtering devices, which utilize line- and single-defects introduced in 2D photonic crystal slab structure. The other is the 2D photonic crystal laser, which utilizes multi-directional distributed feedback effects.