A Review on 2D Photonic Crystal based All Optical Logic Gates

In recent year, every optical computing system and optical communication system depends on the photonic crystal. Based on their design, techniques and application the six all optical logic gates such as AND, OR, NOT, XOR, NOR and NAND are analyzed with contrast ratio and response time. Comparison is done based on types of defects, preferred structures for designing the logic gates. Gates designed with T, Y, E etc. where analysed and are reported. Most commonly they form a suitable candidature for high speed optical systems.