<?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>S0035-001X2015000500005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Solitones no autónomos en fibras ópticas]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez Maldonado]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosu]]></surname>
<given-names><![CDATA[H.C.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Potosino de Investigacion Cientifica y Tecnologica  ]]></institution>
<addr-line><![CDATA[San Luis Potosí ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2015</year>
</pub-date>
<volume>61</volume>
<numero>5</numero>
<fpage>351</fpage>
<lpage>355</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2015000500005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2015000500005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2015000500005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Soluciones solitónicas de las ecuaciones de Schrödinger no lineales de coeficientes variables que describen muchas situaciones reales de propagación solitónica se pueden obtener usando el mapeo de 'integrabilidad diseñada' a la ecuación estandar de Schrödinger no lineal de coeficientes constantes propuesto por He y Li. En este trabajo se presenta este método para el caso de fibras con ganancia/pérdida y se aplica a los casos de los solitones en fibras (ópticas con amplificadores y los solitones brillantes en fibras no amplificadas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Soliton solutions of the non-linear Schrödinger equation of variable coefficients which describe many real cases of solitonic propagation can be obtained by means of the 'designable integrability' mapping to the standard non-linear Schrödinger equation of constant coefficients proposed by He and Li. In this paper, this method of obtaining the non-autonomous soliton solutions is presented for the general case of optical fibers with gain/loss, and applied to fibers with amplifiers, and those allowing the propagation of bright solitons.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Solitón]]></kwd>
<kwd lng="es"><![CDATA[ecuación de Schrödinger no lineal]]></kwd>
<kwd lng="es"><![CDATA[no autónomo]]></kwd>
<kwd lng="es"><![CDATA[fibra óptica]]></kwd>
<kwd lng="en"><![CDATA[Soliton]]></kwd>
<kwd lng="en"><![CDATA[non-linear Schördinger equation]]></kwd>
<kwd lng="en"><![CDATA[non-autonomous]]></kwd>
<kwd lng="en"><![CDATA[optical fiber]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>  	    <p align="center"><font face="verdana" size="4">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Solitones no aut&oacute;nomos en fibras &oacute;pticas</b></font></p>     <p align="center"><font face="verdana" size="4">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>M. P&eacute;rez Maldonado y H.C. Rosu</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>      <p align="justify"><font face="verdana" size="2"><i>IPICYT, Instituto Potosino de Investigaci&oacute;n Cient&iacute;fica y Tecnol&oacute;gica, Camino a la presa San Jose 2055, Col. Lomas 4a Secci&oacute;n, 78216 San Luis Potos&iacute;, S.L.P., M&eacute;xico. </i>e&#45;mail: <a href="mailto:maximino.perez@ipicyt.edu.mx">maximino.perez@ipicyt.edu.mx</a>; <a href="mailto:hcr@ipicyt.edu.mx">hcr@ipicyt.edu.mx</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Received 28 May 2015.     ]]></body>
<body><![CDATA[<br>     Accepted 17 June 2015.</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">Soluciones solit&oacute;nicas de las ecuaciones de Schr&ouml;dinger no lineales de coeficientes variables que describen muchas situaciones reales de propagaci&oacute;n solit&oacute;nica se pueden obtener usando el mapeo de 'integrabilidad dise&ntilde;ada' a la ecuaci&oacute;n estandar de Schr&ouml;dinger no lineal de coeficientes constantes propuesto por He y Li. En este trabajo se presenta este m&eacute;todo para el caso de fibras con ganancia/p&eacute;rdida y se aplica a los casos de los solitones en fibras (&oacute;pticas con amplificadores y los solitones brillantes en fibras no amplificadas.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Palabras Clave: </b>Solit&oacute;n; ecuaci&oacute;n de Schr&ouml;dinger no lineal; no aut&oacute;nomo; fibra &oacute;ptica.</font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p> 	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p> 	    <p align="justify"><font face="verdana" size="2">Soliton solutions of the non&#45;linear Schr&ouml;dinger equation of variable coefficients which describe many real cases of solitonic propagation can be obtained by means of the 'designable integrability' mapping to the standard non&#45;linear Schr&ouml;dinger equation of constant coefficients proposed by He and Li. In this paper, this method of obtaining the non&#45;autonomous soliton solutions is presented for the general case of optical fibers with gain/loss, and applied to fibers with amplifiers, and those allowing the propagation of bright solitons.</font></p>      <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Soliton; non&#45;linear Schr&ouml;dinger equation; non&#45;autonomous; optical fiber.</font></p>      <p align="justify"><font face="verdana" size="2">PACS: 05.45.Yv; 42.65.Tg; 42.81.Dp</font></p>  	    ]]></body>
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