Simultaneous all-optical logic AND and OR gates using photonic circuits

In this paper we have new designed a photonic circuit for all-optical logic AND and OR gates simultaneously using dark-bright soliton conversion. The input logic '0', '1' represents by dark (D), bright (B) soliton respectively and control logic '0' are formed by using the dark soliton pulse (D) trains. We found that the simultaneous optical logic AND and OR gates at the drop and through ports can be formed, respectively. © 2011 IEEE.