High contrast optical OR" logic gates using a photonic crystal fiber modulated by PAM-ASK"

被引：4

作者：

Costa, M.B.C. ^{[1
]}

Bastos, A.M. ^{[2
]}

Coelho Jr., A.G. ^{[2
]}

Sobrinho, C.S. ^{[2
]}

Lyra, M.L. ^{[3
]}

Sombra, A.S.B. ^{[2
]}

机构：

[1] Exact Sciences Department, Federal University of Paŕ (Campus Camet́), UFPa, 68.400-000, Camet́, PA

[2] Telecommunications and Materials Science and Engineering Laboratory (LOCEM), Physics Department, Federal University of Ceaŕ, UFC, 60455-760 Fortaleza, CE

[3] Instituto de Física, Universidade Federal de Alagoas, 57072-970 Maceió, AL

来源：

Journal of Optical Communications | 2014年 / 35卷 / 02期

关键词：

Alloptical logical gate; Nonlinear directional coupler (NLDC); Photonic fiber crystal; Pulse amplitude modulation (PAM);

D O I：

10.1515/joc-2013-0158

中图分类号：

学科分类号：

摘要：

In this work, we present a numerical study of an all-optical logical gate based in a symmetric nonlinear directional coupler (NLDC) in Photonic Fiber Crystals (PCFs) PCFs operating with two ultrashort fundamental soliton pulses of 100 fs, modulated by PAM-ASK with binary amplitude modulation to represent the logical level 1 and 0. The performance of a symmetric dual core NLDCPCF to execute two-input logical functions is examined. We evaluate the effect resulting from an increment in the PAM coding parameter offset (e), considering the anomalous Group Velocity Dispersion (GVD), third-order dispersion (β3) and nonlinear effects Self Phase Modulation (SPM), Self-Steepening (SS), lntrapulse Raman Scattering (IRS) in a lossless configuration. Our results indicate that is possible to get logical operations for the cores 1 or 2 using a phase control to the input pulse in one of the fibers.

引用

页码：85 / 94

页数：9

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