Design of programmable logic device based on electro-optic effect of lithium-niobate-based Mach–Zehnder interferometers

Programmable logic device (PLD) gives flexibility to implement different combinational circuits in a single device as per the requirement. In this paper, design of an optical PLD is proposed using electro-optic effect of lithium-niobate-based Mach–Zehnder interferometers (MZIs). Lithium-niobate-based MZI have spectacular ability to couple an optical input signal to a desired output port. The paper constitutes several examples of combinational logic circuits implemented with proposed device, its mathematical description and thereafter simulation using MATLAB. The study is verified using beam propagation method.