• Savita soma
• Mahesh V
• Sanjaykumar C. Gowre

We have implemented a new design of all optical NOR logic gate by cascading OR and NOT gates structures on a 2-D Photonic Crystal. Firstly, we have designed optical logic OR and NOT gate by using cross wave guide structure. Cross wave guide structure is constructed by creating two cross line defects in square lattice structure of 8 µm*8 µm photonic crystal. We use silicon rods with refractive index of 3.40 in air host of 1 refractive index. The distance between two Si rods, a=0.637µm. and Si rod radius, r = 0.2a. Later we have cascaded OR and NOT gates structure to realize universal NOR gate. The output power level greater than 0.5 and smaller than 0.1 is treated as logic 1 and 0 respectively. Since the proposed structure is compact, simple and clear operating principle it can be used to generate any other logical function in optical integrated circuits. The proposed structure is simulated using Rsoft FDTD Full wave licensed simulator tool.

Logic gates, Lattice structure, Cross Waveguide, Photonic Crystal (PC), Rsoft Full wave FDTD simulator

"IMPLEMENTATION OF CASCADED LOGIC GATE IN A 2D PHOTONIC CRYSTAL ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.5, Issue 7, page no.290-293, July-2018, Available :http://www.jetir.org/papers/JETIR1807507.pdf

"IMPLEMENTATION OF CASCADED LOGIC GATE IN A 2D PHOTONIC CRYSTAL ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.5, Issue 7, page no. pp290-293, July-2018, Available at : http://www.jetir.org/papers/JETIR1807507.pdf