All-optical photonic integrated devices have gained great attention in the field of optical computing and large-scale integration. logic gates are useful for signal processing communication network. The flexible presented here satisfy functionality NAND (NOT-AND), NOR (NOT-OR), XNOR (exclusive NOR) using only one structure with proper changes phase an applied light signal. design all-optical is implemented crystal waveguides square lattice silicon rods. performance simulated, verified,...

The performance of an ultra-compact all-optical D flip-flop using photonic crystal waveguides is numerically analyzed and examined by optimized parameters such as refractive index silicon rod radius. In the field optical networking computing, flip-flops are used to reduce complexity digital circuits. phenomenon interference effect implement a at wavelength 1550 nm. This structure designed T-shaped without non-linear material. proposed design small, has low insertion losses 0.087 dB when...

Through this work, an all-optical 2 ​× ​1 multiplexer (MUX) is realized for optical networking and signal processing using two-dimensional photonic crystal waveguides. The structure consists of two T-shaped one Y-shaped waveguide square lattice silicon rods with a background air. MUX designed without any nonlinear material like Kerr to overcome the problems low gain susceptibility. This design works on principle beam-interference phenomena. performance simulated help...

Abstract The photonic crystals (PhC) play an important role in building all optical logic devices and also recommended as solution for opto-electronic bottleneck terms of speed size. This paper put forward a design XOR gate using Photonic Crystal Ring Resonator (PCRR). ring resonator is device which provides output on the basis coupling mode fields from linear waveguide to circular ring. proposed work designed two-dimensional (2D) square lattice within dimensions <m:math...

Abstract A design of all-optical half-subtractor (AOHS) is presented based on two-dimensional (2-D) photonic crystal (PhC) waveguides without using optical amplifiers and nonlinear materials. It an essential component various integrated circuits. The AOHS circuit beam interference principle, square lattice Y-shaped T-shaped with silicon dielectric rods in air substrate. validated through finite-difference time-domain MATLAB simulations.

Reversible logic gates are capable of designing lossless digital systems, which have received a great deal attention in photonic integrated circuits due to their advantages, such as less heat generation and low power dissipation. In this paper, all-optical reversible Feynman Toffoli designed for optical computing devices low-power circuits. Proposed designs implemented with two-dimensional crystal waveguides without using any nonlinear material. The finite-difference time-domain method is...

In this paper, a three-input AND logic gate is employed using 2D photonic crystal T-shaped waveguide silicon in an air medium. contrast to other gates, the key functions of employing are recognition, error correction, code conversion, data encryption/decryption, and arithmetic operations. The proposed footprint 8.4µm×5.4µm, which modest size. performance investigated by finite-difference time-domain approach, outputs validated at wavelength (λ) 1.55 µm. outcomes clearly show higher ratio...

All-optical logic gates are exceptionally suited for Boolean ultrahigh-speed operation and logical computing. This study presents a plasmonic model that uses Y-shaped metal-insulator-metal waveguide structure realizes the ultrafast all-optical AND, XOR, XNOR gate is developed at footprint of 6.6µm×3.4µm with wavelength 1.55 µm. construction relies on notion linear interference. The insertion loss extinction ratio observed as 1.49 dB 21.49 1.03 18.97 2.06 dB, 10.92 XNOR, respectively....

Abstract Now a day’s photonic crystals (PhCs) are in trends for designing of various integrated circuits like combinational and sequential circuits. The all-optical half adder circuit based on beam interference principle, using T-shaped square lattice with silica dielectric rods air background, is proposed. This design combination two structures: one part it works as AND gate other XOR gate. structure simulated finite difference time domain (FDTD) method verified numerically PWE band solver...

Metal-insulator-metal (MIM, Plasmonic) waveguide has an exceptional quality of propagating the surface plasmon beyond diffraction light into a deep sub-wavelength scale. In this paper, basic structure for half-adder circuit is proposed by inducing nonlinear Kerr-material to Mach-Zehnder interferometers (MZIs). The design optimized using MIM plasmonic waveguide-based MZIs in footprint 85 μm ​× ​10 μm. Some parameters like extinction ratio, transmission efficiency, and insertion loss are...

In this paper, an effective design of all-optical logic gates like XOR gate and AND is presented. The structure these two based on T-shape waveguide with optimized silica dielectric rod. Along the input ports which are essential for required logical operation, extra reference port used. These can be used to construct various combinational circuits, data bit comparison pattern matching, encoding/decoding different switching functions etc.