Recent research in topological photonics has not only proposed and realized novel
topological phenomena such as one‐way broadband propagation and robust transport of …

In this paper, we proposed a novel all optical analog-to-digital (ADC) converter based on
photonic crystals. First of all, we designed a three port nonlinear demultiplexer, for producing …

The add drop filter (ADF) is one of the most significant devices for coarse wavelength
division multiplexing (CWDM) systems to add and/or drop a required channel individually …

In this study, an all optical 4‐to‐2 encoder have been proposed which has four input and
three output ports. The proposed structure can generate a 2‐bit binary code considering …

In this paper, we are going to propose and design an all optical half adder based on
photonic crystal structures. For realizing the proposed structure, we will use two nonlinear …

In this paper, we used the novel defective resonant cavities to design an eight-channel
photonic crystal demultiplexer. We showed that by choosing appropriate values for the width …

In this paper we used three nonlinear resonant rings inside two dimensional photonic
crystals structure for realizing all optical half-adder gate. The nonlinear resonant rings were …

In this paper we proposed optical NOR and NAND gates. By combining nonlinear Kerr effect
with photonic crystal ring resonators first we designed a structure, whose optical behavior …

In this paper, we have designed a four channel wavelength demultiplexer based on
heterostructure photonic crystal (PhC) ring resonator at 1550nm window. In order to achieve …

In this paper a 4× 2 optical encoder is proposed by employing the self-collimation effect in
2D photonic crystals. The total structure of the proposed device is a combination of so called …