<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2007000200003</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Experimental modeling of algorithms and components for all-optical high-bit-rate digital processors-multipliers using light bullets]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Shcherbakov]]></surname>
<given-names><![CDATA[A.S.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre Lopez]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,National Institute for Astrophysics, Optics and Electronics  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,Mixteca University of Technology  ]]></institution>
<addr-line><![CDATA[Huajuapan de Leon Oaxaca]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2007</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2007</year>
</pub-date>
<volume>53</volume>
<numero>2</numero>
<fpage>96</fpage>
<lpage>104</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2007000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2007000200003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2007000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[We present both the estimations of main parameters and the experimental data related to the modeling of algorithms and components for all-optical digital processors-multipliers, exploiting the spatio-temporal optical solitons or light bullets as bit carriers. The modern approach, based on the concept of arranging light beams in space and time using the regime of spatio-temporal solitons is examined from the viewpoint of arresting the collapse of light bullets in a graded-index self-defocusing medium with normal group-velocity dispersion. To perform all-optical computations, the beams of picosecond optical pulses, whose parameters were in one to one coincidence with previously estimated light bullets, have been shaped and employed. Two all-optical algorithms for binary data multiplication in a mixed binary format as well as the corresponding components are designed and experimentally tested with an array of non-collinear second-harmonic generation based optical AND-gates arranged in a square-law optically nonlinear medium.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[En este artículo se presentan tanto la estimación de los parámetros principales como los datos experimentales en relación al modelaje de algoritmos y los componentes de un procesador-multiplicador digital todo-óptico, explotando los solitones temporales ópticos o balas de luz como portadores de información. Esta moderna aproximación se basa en el concepto de arreglar haces de luz en el espacio y tiempo, usando el regimen de solitones espacio-temporal; estos son examinados desde el punto de vista de detener el desplome de las balas de luz en un medio con índice-graduado de auto-desenfocamiento con dispersión normal de la velocidad de grupo. Para realizar cómputos todo-óptico, se formaron y se emplearon haces de pulsos ópticos de picosegundos de duración, cuyos parámetros coincidían uno a uno con las balas de luz previamente estimadas. Dos algoritmos para la multiplicacion todo-óptica de datos binarios en un formato binario mezclado, como también los componentes correspondientes, han sido diseñados y probados experimentalmente con un arreglo de generación de segundo-armónico no-colineal basado en las compuertas-AND ópticas arregladas en un medio óptico no lineal con ley cuadrática.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Spatio-temporal soliton]]></kwd>
<kwd lng="en"><![CDATA[light bullet]]></kwd>
<kwd lng="en"><![CDATA[all-optical digital multiplication]]></kwd>
<kwd lng="en"><![CDATA[non-collinear second harmonic generation]]></kwd>
<kwd lng="es"><![CDATA[Solitones espacio-temporal]]></kwd>
<kwd lng="es"><![CDATA[balas de luz]]></kwd>
<kwd lng="es"><![CDATA[multiplicacion todo-óptica]]></kwd>
<kwd lng="es"><![CDATA[generación de segundo armónico no colineal]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="center"><font face="verdana" size="4"><b>Experimental modeling of algorithms and components for all&#150;optical high&#150;bit&#150;rate digital processors&#150;multipliers using light bullets</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>A.S. Shcherbakov*, A. Aguirre Lopez**</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>* National Institute for Astrophysics, Optics and Electronics, Phone: 52 (222) 266 3100, ext. 2205; Fax: 52 (222) 247 2940, e&#150;mail: <a href="mailto:alex@inaoep.mx">alex@inaoep.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2"><i>** Mixteca University of Technology, Huajuapan de Leon, Oaxaca, 69000, Mexico, Phone: 52(953) 532 0399, ext. 500; Fax: 52 (953) 532 0214, e&#150;mail: <a href="mailto:aaguirre@mixteco.utm.mx">aaguirre@mixteco.utm.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 12 de agosto de 2005    <br>   Aceptado el 30 de noviembre de 2006</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>     <p align="justify"><font face="verdana" size="2">We present both the estimations of main parameters and the experimental data related to the modeling of algorithms and components for all&#150;optical digital processors&#150;multipliers, exploiting the spatio&#150;temporal optical solitons or light bullets as bit carriers. The modern approach, based on the concept of arranging light beams in space and time using the regime of spatio&#150;temporal solitons is examined from the viewpoint of arresting the collapse of light bullets in a graded&#150;index self&#150;defocusing medium with normal group&#150;velocity dispersion. To perform all&#150;optical computations, the beams of picosecond optical pulses, whose parameters were in one to one coincidence with previously estimated light bullets, have been shaped and employed. Two all&#150;optical algorithms for binary data multiplication in a mixed binary format as well as the corresponding components are designed and experimentally tested with an array of non&#150;collinear second&#150;harmonic generation based optical AND&#150;gates arranged in a square&#150;law optically nonlinear medium.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Spatio&#150;temporal soliton; light bullet; all&#150;optical digital multiplication; non&#150;collinear second harmonic generation.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">En este art&iacute;culo se presentan tanto la estimaci&oacute;n de los par&aacute;metros principales como los datos experimentales en relaci&oacute;n al modelaje de algoritmos y los componentes de un procesador&#150;multiplicador digital todo&#150;&oacute;ptico, explotando los solitones temporales &oacute;pticos o balas de luz como portadores de informaci&oacute;n. Esta moderna aproximaci&oacute;n se basa en el concepto de arreglar haces de luz en el espacio y tiempo, usando el regimen de solitones espacio&#150;temporal; estos son examinados desde el punto de vista de detener el desplome de las balas de luz en un medio con &iacute;ndice&#150;graduado de auto&#150;desenfocamiento con dispersi&oacute;n normal de la velocidad de grupo. Para realizar c&oacute;mputos todo&#150;&oacute;ptico, se formaron y se emplearon haces de pulsos &oacute;pticos de picosegundos de duraci&oacute;n, cuyos par&aacute;metros coincid&iacute;an uno a uno con las balas de luz previamente estimadas. Dos algoritmos para la multiplicacion todo&#150;&oacute;ptica de datos binarios en un formato binario mezclado, como tambi&eacute;n los componentes correspondientes, han sido dise&ntilde;ados y probados experimentalmente con un arreglo de generaci&oacute;n de segundo&#150;arm&oacute;nico no&#150;colineal basado en las compuertas&#150;AND &oacute;pticas arregladas en un medio &oacute;ptico no lineal con ley cuadr&aacute;tica.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Solitones espacio&#150;temporal; balas de luz, multiplicacion todo&#150;&oacute;ptica; generaci&oacute;n de segundo arm&oacute;nico no colineal.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 42.65.Pc; 42.65.Re; 42.65.Tg.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v53n2/v53n2a3.pdf">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Acknowledgments</b></font></p>     <p align="justify"><font face="verdana" size="2">This work was financially supported by the CONACyT (Project #U41998&#150;F).</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. Y. Silberberg, <i>Opt. 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