Optical comparators can play crucial roles in the all-optical digital circuits required for optical
calculation and optical processing. A typical digital comparator is a logic circuit that can …

An all optical 2× 4 decoder with better output efficiency plays a substantial role in all optical
computing systems and optical networks. In this study, we provide and investigate a new …

All optical analog to digital converters will play crucial roles in the future generation of all
optical data processing. Cascading optical limiters is a suitable method for designing all …

Using optical beam interference inside photonic-crystal-based waveguides is a promising
method for designing and realizing all-optical logic gates and other digital devices. In this …

Optical analog to digital conversion is very important for implementing all-optical data
processing systems. In this study, we designed an all-optical analog to digital converter …

An all-optical Fredkin gate was proposed and designed. The Fredkin gate is a reversible
logic gate. For designing the proposed structure we used three different optical nonlinear …

In optical processing systems, multiplexer is used to design optical devices such as
arithmetic logic unit (ALU) and shift register (SR). Through this paper, we investigate the …

Optical decoders are one of the necessary building blocks that are required for realizing
optical computation and optical processing systems. Photonic crystals have great potentials …

In this paper, we propose a novel structure of two-dimensional photonic crystals for all-
optical 4-bit Galois field adders (GFA). The proposed structure has very small dimensions …

In this paper we are going to propose a novel optical structure that can work as an optical
combined half adder/subtractor. The proposed structure has 3 output ports. O1 is the …