Dynamical behavior and modulation instability of optical solitons in nonlinear directional couplers

FF Liu, X Lü, JP Wang, YC Wu - Nonlinear Dynamics, 2023 - Springer
In this paper, we focus on the dynamical behavior and modulation instability of optical
solitons in nonlinear directional couplers. The expressions of single soliton solutions are …

Realization of all-optical logic gates in a triangular triple-core photonic crystal fiber

AG Coelho, MBC Costa, AC Ferreira… - Journal of lightwave …, 2012 - ieeexplore.ieee.org
We propose an all-optical logical gate based in a triple-core photonic fiber crystal operating
with two ultrashort fundamental soliton pulses of 100 fs, with pulse amplitude modulation in …

Two all-optical logic gates in a single photonic interferometer

A Araújo, A Oliveira, F Martins, A Coelho, W Fraga… - Optics …, 2015 - Elsevier
In this paper is presented the all-optical AND and OR gates with high contrast ratio in a
single interferometric configuration, ie, when two logic signals are modulated in the input of …

Generation of logic gates based on a photonic crystal fiber Michelson interferometer

JRR Sousa, AC Ferreira, GS Batista, CS Sobrinho… - Optics …, 2014 - Elsevier
We present a numerical investigation of all-optical logical gates based in a Michelson
interferometer (MI) of micro structured fibers, also known as photonic crystal fibers (PCF). We …

Two and three-input all-optical logic gates on a planar three-core photonic crystal fiber

FLB Martins, JPT Rodrigues, FGM Neto… - Optik, 2018 - Elsevier
In this paper, we numerically demonstrate the acquisition of two all-optical devices that
perform the OR and AND logic operations using a solid core Photonic Crystal Fiber (PCF) …

Switching and enhanced bistability in an asymmetric nonlinear directional coupler with a metamaterial channel

AG Coelho Jr, ASB Queiroz, MG da Silva… - … in Nonlinear Science …, 2013 - Elsevier
We numerically simulate the propagation and switching of ultra-short pulses in a
metamaterial nonlinear directional asymmetric coupler where one of the guides is a …

PAM–ASK optical logic gates in an optical fiber Sagnac interferometer

AC Ferreira, AG Coelho Jr, JRR Sousa… - Optics & Laser …, 2016 - Elsevier
In this work we performed a numerical study of optical logic gates based on a Sagnac
interferometer, operating with short optical pulses (10 ps) in a PAM–ASK modulation …

Analysis of the nonlinear optical switching in a Sagnac interferometer with non-instantaneous Kerr effect

AC Ferreira, MBC Costa, AG Coêlho Jr… - Optics …, 2012 - Elsevier
In this work we present a study of the performance of nonlinear switching in a Sagnac
interferometer under the action of a relaxed Kerr nonlinearity, using ultrashort optical pulses …

Optical cryptography under PPM-PAM modulation based in short optical pulses in an acoustic-optic tunable filter (AOTF)

KDA Sabóia, AC Ferreira, CS Sobrinho… - Optical and quantum …, 2009 - Springer
A new optical encryption method using an acousto-optic tunable filter (AOTF) operating
simultaneously with pulse position modulation (PPM) and pulse amplitude modulation …

Analysis of the performance of optical code-division multiple-access system (OCDMA), operating with gold codes under nonlinear effects

G de Freitas Guimarães, AM Bastos… - Journal of …, 2013 - scirp.org
A numerical simulation study of the performance of encoding and decoding of short optical
pulse in OCDMA (Optical Code Division Multiple Access) systems under non-linear optical …