{"id":24152,"date":"2018-03-09T09:14:59","date_gmt":"2018-03-09T09:14:59","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/entrainment-of-semiconductor-lasers-noise-modulation-and-sinchronization\/"},"modified":"2018-03-09T09:14:59","modified_gmt":"2018-03-09T09:14:59","slug":"entrainment-of-semiconductor-lasers-noise-modulation-and-sinchronization","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/politecnica-de-catalunya\/entrainment-of-semiconductor-lasers-noise-modulation-and-sinchronization\/","title":{"rendered":"Entrainment of semiconductor lasers: noise, modulation and sinchronization"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Javier Mart\u00edn Buldu <\/strong><\/h2>\n<p>El objetivo de esta tesis es el estudio de la din\u00e1mica de los l\u00e1seres de semiconductor (ls) con realimentaci\u00f3n \u00f3ptica, tanto desde el punto de vista experimental como num\u00e9rico. La relfexi\u00f3n  de la luz emitada por el l\u00e1ser, debida a la presencia de un espejo externo, es capaz de inducir una din\u00e1mica ca\u00f3tica en su intensidad de salida. Concretamente, cuando el l\u00e1ser es bombeado cerca de su corriente umbral, puede entrar en el r\u00e9gimen de fluctuaciones de baja frecuencia (lff), caracterizado por repentinas ca\u00eddas de su intensidad a tiempos irregulares. El comportamiento pulsado, y ca\u00f3tico, en este r\u00e9gimen es de especial inter\u00e9s desde el punto de vista de la din\u00e1mica de sistemas no-lineales, pero tambi\u00e9n por sus aplicaciones en comunicaciones \u00f3pticas.  si queremos resumir los resultados de esta tesis ordenados cronol\u00f3gicamente, debemos empezar hablando de ruido. El efecto de el ruido en un sistema no-lineal puede ser de gran ayuda en la obtenci\u00f3n de una respuesta m\u00e1s regular, efectos como la resonancia coherente o la resonancia estoc\u00e1stica han dado buena prueba de ello. Con el objetivo de observar ambos fen\u00f3menos en el comportamiento pulsado de un l\u00e1ser en r\u00e9gimen de lff, se realizan simulaciones num\u00e9ricas a partir del modelo de lang-kobayashi (lk), que describe la evoluci\u00f3n del campo el\u00e9ctrico y los portadores en un ls. Los resultados obtenidos demuestran que a\u00f1adiendo cierta cantidad de ruido externo a trav\u00e9s de la corriente de bombeo, los pulsos observados en la intensidad de salida se vuelven m\u00e1s regulares, que es la caracter\u00edstica t\u00edpica de la resonancia de coherencia (rc). Si la corriente de bombeo est\u00e1 modulada con una se\u00f1al peri\u00f3dica de cierta frecuencia, se puede observar c\u00f3mo el ruido externo ayuda al sistema a seguir dicha frecuencia, lo que se refleja en la intensidad de salida con unas ca\u00eddas no s\u00f3lo m\u00e1s regulares, sino tambi\u00e9n a la frecuencia de forzamiento. Este fen\u00f3meno, observado en div<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Entrainment of semiconductor lasers: noise, modulation and sinchronization<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Entrainment of semiconductor lasers: noise, modulation and sinchronization <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Javier Mart\u00edn Buldu <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Polit\u00e9cnica de catalunya<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 30\/06\/2003<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Jordi Garc\u00eda Ojalvo<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: ramon Vilaseca alavedra <\/li>\n<li>ingo Fischer (vocal)<\/li>\n<li>Mar\u00eda Sancho jose (vocal)<\/li>\n<li>pere Colet (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Javier Mart\u00edn Buldu El objetivo de esta tesis es el estudio de la din\u00e1mica de los l\u00e1seres [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-gradient":""}},"footnotes":""},"categories":[15596],"tags":[71162,71161,19991,71163,33576,12279],"class_list":["post-24152","post","type-post","status-publish","format-standard","hentry","category-politecnica-de-catalunya","tag-ingo-fischer","tag-javier-martin-buldu","tag-jordi-garcia-ojalvo","tag-maria-sancho-jose","tag-pere-colet","tag-ramon-vilaseca-alavedra"],"_links":{"self":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/24152","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/comments?post=24152"}],"version-history":[{"count":0,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/posts\/24152\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/media?parent=24152"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/categories?post=24152"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.deberes.net\/tesis\/wp-json\/wp\/v2\/tags?post=24152"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}