Design Of Clocked Hybrid (D/T) Flipflop Through Air Hole Paradigm Photonic Crystal

Abstract

In this paper an advanced air-hole type photonic crystal is used to design a clocked Hybrid D/T flip flop which works as both ‘D Flip Flop’ and ‘T Flip Flop’ by manipulating the control strobe or enable signal. A uniform Silica photonic crystal that has the refractive index varying from (1.55 to 1.40 for its transparent range 160nm to 3000nm) with air hole structure is utilized. Photonic crystal is created with multi-mode interference (MMI) for three input ports which represent three inputs Clock, D/T and control Strobe or Enable input. The response time of the structure is very less. The simplicity of the crystal, contrast ratio, power output and quick response time makes more suitable to be a part of optical integrated circuits.