<?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>1870-3542</journal-id>
<journal-title><![CDATA[Revista mexicana de física E]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fís. E]]></abbrev-journal-title>
<issn>1870-3542</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-35422016000200108</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Simulación computacional de una fibra óptica con índice escalonado y propagación multimodal]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón-Ramón]]></surname>
<given-names><![CDATA[C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gómez-Aguilar]]></surname>
<given-names><![CDATA[J.F.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Escalante-Martínez]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Laguna-Camacho]]></surname>
<given-names><![CDATA[J.R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cruz-Orduña]]></surname>
<given-names><![CDATA[M.I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Mendoza]]></surname>
<given-names><![CDATA[L.J.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Calderón]]></surname>
<given-names><![CDATA[J.E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Romero]]></surname>
<given-names><![CDATA[I.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ingeniería Mecánica y Eléctrica ]]></institution>
<addr-line><![CDATA[Poza Rica Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Tecnológico Nacional de México Centro Nacional de Investigación y Desarrollo Tecnológico ]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ingeniería en Electrónica y Comunicaciones ]]></institution>
<addr-line><![CDATA[ Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Ingeniería Mecánica y Eléctrica ]]></institution>
<addr-line><![CDATA[San Nicolás de los Garza Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Veracruzana Facultad de Ciencias Químicas ]]></institution>
<addr-line><![CDATA[Poza Rica Veracruz]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2016</year>
</pub-date>
<volume>62</volume>
<numero>2</numero>
<fpage>108</fpage>
<lpage>116</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-35422016000200108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-35422016000200108&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-35422016000200108&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[En el presente trabajo se realiza la simulación computacional de la propagación electromagnética multimodal en el interior de una fibra óptica con índice escalonado. Una fuente senoidal colocada en el extremo izquierdo alimenta un campo electromagnético a la fibra óptica; las capas de la fibra se modelan de forma escalonadas para lograr la reflexión total interna de la luz incidente de acuerdo con la teoría ondulatoria de la luz. La simulación se realiza utilizando herramientas del electromagnetismo computacional tales como el Método de Diferencias Finitas en el Dominio del Tiempo (FDTD) y el método de capas perfectamente acopladas (PML) como condición de frontera de absorción para evitar que la propagación electromagnética continúe hasta el infinito. La frecuencia de operación utilizada es de 187 THz y la longitud de onda es de 1600nm, esta simulación se logra desarrollando un algoritmo computacional en Matlab. Se obtienen los parámetros electromagnéticos propagados en el núcleo de la fibra óptica tales como componentes de campo magnético Hx y Hy y de campo eléctrico Ez. Deseamos que los alumnos logren comprender el comportamiento de la luz como onda electromagnética en el interior de la fibra óptica, puede ser algo que tal vez se perciba como sencillo, sin embargo, estamos seguros que al visualizar la propagación electromagnética de acuerdo a los resultados obtenidos, permite interpretar con claridad estos fenómenos ópticos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[In this paper the computational simulation of electromagnetic propagation multimodal inside an optical fiber with step index is performed. A sinusoidal source placed at the left end feeds an electromagnetic field to the optical fiber; fiber layers are modeled staggered to achieve total internal reflection of the incident light according to the wave theory of light. The simulation is performed using tools of computational electromagnetics such as Method Finite Difference Time Domain (FDTD) and the method of perfectly matched layers (PML) as boundary condition absorption to prevent electromagnetic propagation continue to infinity. The operating frequency is 187 THz used and the wavelength of 1600nm is, this simulation is achieved by developing a computational algorithm in Matlab. electromagnetic parameters propagated in the core of the optical fiber such as magnetic field components Hx and Hy and Ez electric field are obtained. We want students to achieve understanding of the behavior of light as an electromagnetic wave inside the optical fiber, it may be something that might be perceived as simple, however, we are sure to see the electromagnetic propagation according to the results allowing clearly interpret these optical phenomena.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Fibra óptica]]></kwd>
<kwd lng="es"><![CDATA[propagación de una onda electromagnetica]]></kwd>
<kwd lng="es"><![CDATA[reflexión y refracción]]></kwd>
<kwd lng="es"><![CDATA[metodo de diferencias finitas]]></kwd>
<kwd lng="en"><![CDATA[Fiber optics]]></kwd>
<kwd lng="en"><![CDATA[electromagnetic wave propagation]]></kwd>
<kwd lng="en"><![CDATA[reflection and refraction]]></kwd>
<kwd lng="en"><![CDATA[finite difference methods]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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