TY - JOUR T1 - Designing optical filter using localized defect in 2D photonic crystal TT - طراحی فیلتر نوری با استفاده از ناراستی نقطه‌ای در کریستال فوتونیکی دو بعدی JF - opsi JO - opsi VL - 20 IS - 0 UR - http://opsi.ir/article-1-233-en.html Y1 - 2014 SP - 465 EP - 468 KW - Resonant cavity KW - Photonic crystal KW - Defect KW - Optical filter. N2 - In this paper we proposed a different methods for designing all optical photonic crystal based filters. In this structure which is composed of a square lattice of dielectric rods in air medium the wavelength selecting mechanism is based on a defective cavity. High transmission efficiency is the most significant property of the proposed filters. M3 ER -