All Optical Half Adder Based on Two Dimensional Photonic Crystals

K. Rama Prabha; R. Arunkumar; S. Robinson

K. Rama Prabha Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, 622507, Tamil Nadu, India.
R. Arunkumar Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, 622507, Tamil Nadu, India.
S. Robinson Department of Electronics and Communication Engineering, Mount Zion College of Engineering and Technology, Pudukkottai, 622507, Tamil Nadu, India.

Keywords: Photonic crystals, half adder, photonic band gap, ring resonators

Abstract

In this Chapter, initially, the introduction, history, types and applications of Photonic crystal is discussed. Then, the design and analysis of all optical half adder based on two dimensional photonic crystals is presented. A half adder is a type of adder that performs the addition of numbers. The half adder is able to add two single binary digits and provide the output plus a carry value. The proposed half adder is designed using hexagonal lattice with the X shaped defect. The performance analysis of half adder is investigated for the combination such as A=1,B=0;A=0,B=1;A=1,B=1.The functional parameters of half adder such as normalized efficiency, bit rate, contrast ratio and the maximum delay time is calculated. The size of the proposed device is very small. Hence, it can be desirable for optical computing in future optical networks.