Title	Optical Band Gap Engineering based on Single and Multiple Twin Defects Distribution inside One-dimensional Photonic Crystals
Author	A. Rostami, H. Alipour
Citation	Vol. 6  No. 7  pp. 211-214
Keywords	Photonic Crystals, Band Gap Engineering, Array of Defects

Title	All-optical Switch and Hard Limiter device using a Twin Defects in Two-dimensional Nonlinear Photonic Crystals
Author	Ali Rostami, Hamed Alipour
Citation	Vol. 6  No. 7  pp. 206-210
Keywords	All-optical switching, Twin Defect layers, Nonlinear Photonic Crystals, Hard Limiter