Title :
Realization of All-Optical Logic Gates in a Triangular Triple-Core Photonic Crystal Fiber
Author :
Coelho, A.G. ; Costa, M.B.C. ; Ferreira, A.C. ; da Silva, Maria da Guia ; Lyra, M.L. ; Sombra, Antonio S. B.
Author_Institution :
Phys. Dept., Fed. Univ. of Ceara-UFC, Fortaleza, Brazil
Abstract :
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 the modality of amplitude shift keying (PAM-ASK) with binary amplitude modulation. In particular, we examine the performance of a triple-core PCF coupler to execute two-input logical functions. The pulse propagation is modelled by an extended nonlinear Schroedinger equation including the terms associated with the anomalous group-velocity dispersion (GVD) and the third-order dispersion (β3), as well as the nonlinear effects of self-phase modulation (SPM), cross-phase modulation (XPM), self-steepening, and intrapulse Raman scattering (IRS) in a lossless configuration. Our results indicate the possibility of getting logical operations by controlling the phase difference between the input pulses.
Keywords :
Raman spectra; holey fibres; optical logic; phase modulation; photonic crystals; all-optical logic gates; amplitude shift keying; binary amplitude modulation; cross-phase modulation; extended nonlinear Schroedinger equation; input pulses; intrapulse Raman scattering; lossless configuration; nonlinear effects; phase difference; pulse amplitude modulation; self-phase modulation; self-steepening; third-order dispersion; time 100 fs; triangular triple-core photonic crystal fiber; two-input logical functions; ultrashort fundamental soliton pulses; Logic gates; Modulation; Nonlinear optics; Optical fiber dispersion; Optical fibers; All-optical switch; logical gates; pulse amplitude shift keying; triple-core photonic fiber;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2012.2232641
