<?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>S0035-001X2004000300012</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[An all-optical 4-bit register based on a four-order scattering of light by coherent acoustic phonons in single crystals]]></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[Tepichin Rodriguez]]></surname>
<given-names><![CDATA[E.]]></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="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Instituto Nacional de Astrofísica Optica y Electrónica  ]]></institution>
<addr-line><![CDATA[Puebla ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2004</year>
</pub-date>
<volume>50</volume>
<numero>3</numero>
<fpage>297</fpage>
<lpage>305</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2004000300012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2004000300012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2004000300012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[A specific case of a four-order non-collinear light scattering in anisotropic media is presented. Compared to our previous studies, an innovation lies in the fact that now we consider passing just the quartet of incident light waves through a single crystal that is perturbed by a coherent stream of acoustic phonons. The exact and closed analytical model for describing this strongly nonlinear phenomenon is developed. In fact, a specially designed regime of a four-order light scattering, when transitions of four input light beams into four output light modes are allowed and electronically controlled, is examined. The feasibility of applying such an effect to perform an all-optical switching is analyzed. An opportunity for arranging the digital 4-bit register is revealed and algorithmically analyzed.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Se presenta el caso específico de la dispersión de la luz no-colineal de cuarto orden en un medio anisotrópico. Comparado con nuestros previos estudios, la innovación yace en la consideración de hacer pasar cuatro haces incidentes de ondas de luz a través de un cristal el cuál es perturbado por una columna de fonones acústicos coherentes. La solución analítica y exacta al modelo que describen este fenómeno fuertemente no lineal es desarrollada. De hecho, se examina el régimen especialmente diseñado de la dispersión de la luz de cuarto orden, cuando las transiciones de cuatro ondas de luz de entrada hacia cuatro haces de luz de salida son permitidas y electrónicamente controladas. Se describe también la posibilidad de aplicar tal efecto para desarrollar el proceso de un interruptor todo-óptico. Se presenta la posibilidad de implementar un registro digital de 4 bits la cuál es analizada algorítmicamente.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[All-optical switching]]></kwd>
<kwd lng="en"><![CDATA[logic-based data processing]]></kwd>
<kwd lng="en"><![CDATA[acousto-optical device]]></kwd>
<kwd lng="es"><![CDATA[Interruptores todo-ópticos]]></kwd>
<kwd lng="es"><![CDATA[lógica basada en el procesamiento de datos]]></kwd>
<kwd lng="es"><![CDATA[dispositivos acusto-ópticos]]></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>An all&#45;optical 4&#45;bit register based on a four&#45;order scattering of light by coherent</b> <b>acoustic phonons in single crystals</b></font></p> 	    <p align="center">&nbsp;</p>  	    <p align="center"><font face="verdana" size="2"><b>A.S. Shcherbakov, E. Tepichin Rodriguez, and 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 &amp; Electronics, Apartado Postal 51 y 216, 72000, Puebla, M&eacute;xico Fax/Tel. +52 (222) 2472940,</i> E&#45;mail: <a href="mailto:alex@inaoep.mx">alex@inaoep.mx</a>, <a href="mailto:tepichin@inaoep.mx">tepichin@inaoep.mx</a>, <a href="mailto:aaguirre@inaoep.mx">aaguirre@inaoep.mx</a></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Recibido el 18 de septiembre de 2003;    ]]></body>
<body><![CDATA[<br> 	Aceptado el 28 de noviembre de 2003.</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">A specific case of a four&#45;order non&#45;collinear light scattering in anisotropic media is presented. Compared to our previous studies, an innovation lies in the fact that now we consider passing just the quartet of incident light waves through a single crystal that is perturbed by a coherent stream of acoustic phonons. The exact and closed analytical model for describing this strongly nonlinear phenomenon is developed. In fact, a specially designed regime of a four&#45;order light scattering, when transitions of four input light beams into four output light modes are allowed and electronically controlled, is examined. The feasibility of applying such an effect to perform an all&#45;optical switching is analyzed. An opportunity for arranging the digital 4&#45;bit register is revealed and algorithmically analyzed.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> All&#45;optical switching; logic&#45;based data processing; acousto&#45;optical device.</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 el caso espec&iacute;fico de la dispersi&oacute;n de la luz no&#45;colineal de cuarto orden en un medio anisotr&oacute;pico. Comparado con nuestros previos estudios, la innovaci&oacute;n yace en la consideraci&oacute;n de hacer pasar cuatro haces incidentes de ondas de luz a trav&eacute;s de un cristal el cu&aacute;l es perturbado por una columna de fonones ac&uacute;sticos coherentes. La soluci&oacute;n anal&iacute;tica y exacta al modelo que describen este fen&oacute;meno fuertemente no lineal es desarrollada. De hecho, se examina el r&eacute;gimen especialmente dise&ntilde;ado de la dispersi&oacute;n de la luz de cuarto orden, cuando las transiciones de cuatro ondas de luz de entrada hacia cuatro haces de luz de salida son permitidas y electr&oacute;nicamente controladas. Se describe tambi&eacute;n la posibilidad de aplicar tal efecto para desarrollar el proceso de un interruptor todo&#45;&oacute;ptico. Se presenta la posibilidad de implementar un registro digital de 4 bits la cu&aacute;l es analizada algor&iacute;tmicamente.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Descriptores:</b> Interruptores todo&#45;&oacute;pticos, l&oacute;gica basada en el procesamiento de datos; dispositivos acusto&#45;&oacute;pticos.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">PACS: 42.25.Fx; 42.65.Pc</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/v50n3/v50n3a12.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>Acknowledgements</b></font></p>  	    <p align="justify"><font face="verdana" size="2">This work was financially supported by the CONACyT (Project # U41998&#45;F), and the INAOE (Opto&#45;Electronic Project).</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.&nbsp;V.I. Balakshy, V.N. Parygin, and L.I. Chirkov, <i>Physical Principles of Acousto&#45;Optics</i> (Radio i Svyaz, Moscow, 1985).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301474&pid=S0035-001X200400030001200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">2.&nbsp;A. Korpel, <i>Acousto&#45;Optics</i> (Marcel Dekker, New&#45;York, 1997).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301476&pid=S0035-001X200400030001200002&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">3.&nbsp;A.S. Shcherbakov and E. Tepichin Rodriguez, <i>Proc. SPIE.</i> <b>4490</b> (2001) 114.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301478&pid=S0035-001X200400030001200003&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">4.&nbsp;A.S. Shcherbakov, E. Tepichin Rodriguez, and A.Aguirre L&oacute;pez, "All&#45;optical logic using a three&#45;order scattering of light in crystals." Proceedings of the SOMIXVI &#45; National Congress of Instrumentation, October 15&#45;19, 2001 Quer<i>&eacute;</i>taro, M&eacute;xico, Opt. 13, 1&#45;13,2001.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301480&pid=S0035-001X200400030001200004&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">5.&nbsp;A.S. Shcherbakov, E. Tepichin Rodriguez, and A. Aguirre L&oacute;pez, "A three&#45;order diffraction of light by acoustic grating with direct coupling of all the optical modes in a crystal." OSA Trends in Optics and Photonics Vol. 75, Diffractive Optics and Micro&#45;Optics. (Optical Society of America, Washington, DC 2002), pp. 397&#45;403.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301482&pid=S0035-001X200400030001200005&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">6.&nbsp;A.S. Shcherbakov, E. Tepichin Rodriguez, and A. Aguirre L&oacute;pez, <i>Proc. SPIE.</i> <b>4788</b> (2002) 239.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301484&pid=S0035-001X200400030001200006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">7.&nbsp;A.S. Shcherbakov, E. Tepichin Rodriguez, and A. Aguirre L&oacute;pez, "Implementing all&#45;optical J&#45;K flip&#45;flops based on a two&#45;phonon scattering of light in a single crystal." OSA Technical Digest, Optics in Computing. (Optical Society of America, Washington, DC 2003), pp 146&#45;148.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301486&pid=S0035-001X200400030001200007&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">8.&nbsp;Charles Kittel, <i>Introducci&oacute;n a la f&iacute;sica del estado s&oacute;lido</i> (Reverte, S.A, Barcelona, 1995).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301488&pid=S0035-001X200400030001200008&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">9.&nbsp;W.C. Lin, <i>Handbook of digital system design</i> (CSC Press, Boston, 1990).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301490&pid=S0035-001X200400030001200009&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">10.&nbsp;B. Holdsworth, <i>Digital logic design</i> (Butterworth &amp; Co, London, 1982).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301492&pid=S0035-001X200400030001200010&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">11.&nbsp;J.D. Daniels, <i>Digital Design from Zero to One</i> (John Wiley &amp; Sons, Inc., New&#45;York, 1996).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301494&pid=S0035-001X200400030001200011&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    ]]></body>
<body><![CDATA[<!-- ref --><p align="justify"><font face="verdana" size="2">12.&nbsp;M.M. Morris, <i>Digital Logic and Computer Design</i> (Prentice Hall, Inc., Englewood Clifs, N.J., 1987).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301496&pid=S0035-001X200400030001200012&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">13.&nbsp;A.P. Malvino and D.P. Leach, <i>Digital Principles and applications</i> (McGraw&#45;Hill, Inc., New&#45;York, 1981).    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8301498&pid=S0035-001X200400030001200013&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>      ]]></body><back>
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<source><![CDATA[Digital logic design]]></source>
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</article>
