%0 Journal Article
%T Analysis of the Performance of Optical Code-Division Multiple-Access System (OCDMA), Operating with Gold Codes under Nonlinear Effects
%A Glendo de Freitas Guimar£¿es
%A Agliberto Melo Bastos
%A Alisson da Concei£¿£¿o Ferreira
%A Alex Sander Barros Queiroz
%A Jos¨¦ Wally Mendon£¿a Menezes
%A Jos¨¦ Rubens Rodrigues de Sousa
%A Antonio Sergio Bezerra Sombra
%J Journal of Electromagnetic Analysis and Applications
%P 49-57
%@ 1942-0749
%D 2013
%I Scientific Research Publishing
%R 10.4236/jemaa.2013.52008
%X <p class=\"MsoNormal\" style=\"text-align:justify;\">
	<span lang=\"EN-US\">A</span><span lang=\"EN-US\"> </span><span lang=\"EN\">numerical simulation study of
the performance of encoding and decoding of short optical pulse in OCDMA (Optical
Code Division Multiple Access) </span><span lang=\"EN-US\">systems under non-linear optical effects</span><span lang=\"EN-US\"> </span><span lang=\"EN\">is presented.</span><span lang=\"EN\"> </span><span lang=\"EN-US\">The performance of encoding and decoding short pulses
is obtained through use of device FBG (fiber Bragg grating) where the codes are
inserted through discrete jumps in the optical phase (¡À</span><span lang=\"PT-BR\">¦Ð</span><span lang=\"EN-US\">)</span><span lang=\"EN\">. The multiuser interference is also the object of the
present study, where a figure of merit (interference figure) is used to quantify
the interference in multiuser auto and cross correlation. We evaluate the dependence
of the multiuser interference for the coupling constant of FBG. Finally, the interference
inserted in the autocorrelation due to nonlinear effects generated in the nonlinear
switching of the coded pulse in a dual core nonlinear directional coupler is examined,
where </span><span lang=\"EN-US\">temporal broadening
of pulses decoded is observed</span><span lang=\"EN\">.</span><span lang=\"EN-US\"><o:p></o:p></span> 
</p>
%K Fiber Bragg Grating
%K Gold Code
%K OCDMA
%K All-Optical Digital Processing of Signals
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=28498