<?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>S0035-001X2011000200010</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Finite photonic lattices: a solution using characteristic polynomials]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Soto-Eguibar]]></surname>
<given-names><![CDATA[F.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguilar-Loreto]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Perez-Leija]]></surname>
<given-names><![CDATA[A.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moya-Cessa]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Christodoulides]]></surname>
<given-names><![CDATA[D.N.]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Nacional de Astrofísica, Óptica y Electrónica  ]]></institution>
<addr-line><![CDATA[Puebla Pue]]></addr-line>
<country>México</country>
</aff>
<aff id="A02">
<institution><![CDATA[,Universidad de Guadalajara Departamento de Ingenierias ]]></institution>
<addr-line><![CDATA[ Jal]]></addr-line>
<country>México</country>
</aff>
<aff id="A03">
<institution><![CDATA[,University of Central Florida College of Optics ]]></institution>
<addr-line><![CDATA[Orlando Florida]]></addr-line>
<country>USA</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2011</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2011</year>
</pub-date>
<volume>57</volume>
<numero>2</numero>
<fpage>158</fpage>
<lpage>161</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2011000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2011000200010&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2011000200010&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[We give an analytic solution for the propagation of light in a finite waveguide array when the interaction coefficients are constant. We show how to excite the different sites to allow propagation without perturbation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se presenta una solución analítica para la propagación de la luz en un arreglo finito de guías de onda cuando los coeficientes de la interacción son constantes. Mostramos como excitar los diferentes lugares para permitir una propagación sin perturbación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Light propagation]]></kwd>
<kwd lng="en"><![CDATA[waveguide arrays]]></kwd>
<kwd lng="es"><![CDATA[propagación de la luz]]></kwd>
<kwd lng="es"><![CDATA[arreglos de guías de onda]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Finite photonic lattices: a solution using characteristic polynomials</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>F. Soto&#150;Eguibar&ordf;, O. Aguilar&#150;Loreto<b><sup>b</sup></b>, A. Perez&#150;Leija<b>&ordf;<sup> ,c</sup></b>, H. Moya&#150;Cessa&ordf;, and D.N. Christodoulides<sup>c</sup></b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>&ordf; Instituto Nacional de Astrof&iacute;sica, &Oacute;ptica y Electr&oacute;nica, Apartado Postal 51 y 216, Puebla, Pue., 72000, M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2"><sup><i>b</i></sup> <i>Departamento de Ingenierias, CUC Sur, Universidad de Guadalajara, Autl&aacute;n de Navarro, Jal., 48900, M&eacute;xico.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>c</sup> CREOL/College of Optics, University of Central Florida, Orlando, Florida, USA.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Recibido el 11 de octubre de 2010    <br> Aceptado el 17 de enero de 2011</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">We give an analytic solution for the propagation of light in a finite waveguide array when the interaction coefficients are constant. We show how to excite the different sites to allow propagation without perturbation.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords:  </b>Light propagation; waveguide arrays.</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">Se presenta una soluci&oacute;n anal&iacute;tica para la propagaci&oacute;n de la luz en un arreglo finito de gu&iacute;as de onda cuando los coeficientes de la interacci&oacute;n son constantes. Mostramos como excitar los diferentes lugares para permitir una propagaci&oacute;n sin perturbaci&oacute;n.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores:  </b>propagaci&oacute;n de la luz; arreglos de gu&iacute;as de onda.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 42.65.Tg; 42.65.Sf; 42.82.Et</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v57n2/v57n2a10.pdf" target="_blank">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>References</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. D.N. Christodoulides, F. Lederer, and Y. Silberberg, <i>Nature </i><b>424 </b>(2003) 817.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8366779&pid=S0035-001X201100020001000001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">2. A.  Yariv,   <i>Optical Electronics,  </i>4th ed.  (Saunders  College, Philadelphia, 1991).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8366781&pid=S0035-001X201100020001000002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>     ]]></body>
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