Logic Gates Based in Asymmetric Couplers: Numerical Analysis

In this work, we present a numerical investigation of the transmission and switching of fundamental solitons in asymmetric nonlinear directional couplers, constructed with dispersion decreasing fibers (DDF). In this configuration, the coupler consists of two separated parallel fibers, one with a DDF...

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Bibliographic Details
Published in:Fiber and integrated optics 2007-06, Vol.26 (4), p.217-228
Main Authors: de Almeida, J. S., Menezes, J. W. M., Da Silva, M. G., Sombra, A. S. B., Fraga, W. B., Sales, J. C., Ferreira, A. C., Marciano, S. P., Filho, A. F. G. F.
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
nonlinear directional coupler
optical logic gates
optical switching
Optical telecommunications
soliton pulses
Switching and signalling
Systems, networks and services of telecommunications
Telecommunications
Telecommunications and information theory
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Summary:In this work, we present a numerical investigation of the transmission and switching of fundamental solitons in asymmetric nonlinear directional couplers, constructed with dispersion decreasing fibers (DDF). In this configuration, the coupler consists of two separated parallel fibers, one with a DDF profile and the other with a constant profile. We obtained the characteristics of transmission, extinction ratio, and compression factor of the device. The truth tables for the logic gates AND, OR, and XOR were obtained. We concluded that the device presenting a constant profile provided the best performance of the studied logic gates. Logic gates AND, OR, and XOR operating with extinction coefficient around 16.6 dB were obtained.
ISSN:0146-8030
1096-4681
DOI:10.1080/01468030701347072