{"id":5661,"date":"2023-02-05T16:47:00","date_gmt":"2023-02-05T15:47:00","guid":{"rendered":"https:\/\/www.cailabs.com\/technical-publications-and-conferences\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/"},"modified":"2024-02-23T17:23:30","modified_gmt":"2024-02-23T16:23:30","slug":"filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links","status":"publish","type":"publication","link":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/","title":{"rendered":"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links"},"content":{"rendered":"\n<p><strong>Authors:<\/strong> <strong>Cl\u00e9ment Jacquard, Claire Autebert, Rapha\u00ebl Piccon, Pierre Vernaz-Gris, Gauthier Trunet, Julien Bayol, Pu Jian, Guillaume Labroille\u00a0<\/strong><\/p>\n\n\n\n<p>Cailabs, Rennes, FRANCE<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p class=\"has-noir-color has-text-color has-link-color wp-elements-8eeeb024cbbdc1e5b6dbf20c2d788684\"><strong>Abstract<\/strong><\/p>\n\n\n\n<p>Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications, in particular for very high throughput Optical Feeder Links for ground to satellite communications. In this paper, we present the implementation of a filled-aperture coherent beam combiner composed of polarization-maintaining fiber components, Electro-Optic Modulators (EOMs) as phase control devices, erbium-doped fiber amplifiers, a Multi-Plane Light Converter (MPLC) and a feedback loop to achieve coherent combining. The feedback loop is based on a Hill Climbing method implemented on a consumer microcontroller executing the Stochastic Parallel Gradient Descent (SPGD) algorithm.<\/p>\n\n\n\n<p>The MPLC combiner achieves coherent combination efficiency largely beyond tiled aperture coherent beam combiners: experimentally measured efficiency ~80% compared to a maximal theoretical efficiency of 67% for tiled aperture. Moreover, the reflective design of the MPLC enables high power handling, with 120W handling achieved with the uncooled combiner used in this paper, and multi-kW handling achievable with a cooled design.<\/p>\n\n\n\n<p>The SPGD algorithm enables precise control of the EOMs to achieve a stable optical output power. Our experimental results demonstrate the effectiveness of the proposed approach, achieving coherent combination of up to 6 input channels with impulse response equivalent bandwidth sufficient to compensate the vast majority of thermal and mechanical perturbations, negligible power loss duration due phase wrapping interruptions and a combining efficiency above the currently known state-of-the-art.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>ICSOS 2023<\/p>\n","protected":false},"author":2,"parent":0,"template":"","categorie-publication":[99,102],"class_list":["post-5661","publication","type-publication","status-publish","hentry","categorie-publication-aerospatial-et-defense","categorie-publication-communications-laser"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs<\/title>\n<meta name=\"description\" content=\"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs\" \/>\n<meta property=\"og:description\" content=\"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/\" \/>\n<meta property=\"og:site_name\" content=\"Cailabs\" \/>\n<meta property=\"article:modified_time\" content=\"2024-02-23T16:23:30+00:00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/aerospatial-et-defense\\\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\\\/\",\"url\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/aerospatial-et-defense\\\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\\\/\",\"name\":\"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/#website\"},\"datePublished\":\"2023-02-05T15:47:00+00:00\",\"dateModified\":\"2024-02-23T16:23:30+00:00\",\"description\":\"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/aerospatial-et-defense\\\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\\\/#breadcrumb\"},\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/aerospatial-et-defense\\\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\\\/\"]}]},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/aerospatial-et-defense\\\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Publications techniques\",\"item\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/publications-techniques-conferences\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/#website\",\"url\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/\",\"name\":\"Cailabs\",\"description\":\"\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.cailabs.com\\\/fr\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs","description":"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/","og_locale":"fr_FR","og_type":"article","og_title":"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs","og_description":"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications","og_url":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/","og_site_name":"Cailabs","article_modified_time":"2024-02-23T16:23:30+00:00","twitter_card":"summary_large_image","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/","url":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/","name":"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links - Cailabs","isPartOf":{"@id":"https:\/\/www.cailabs.com\/fr\/#website"},"datePublished":"2023-02-05T15:47:00+00:00","dateModified":"2024-02-23T16:23:30+00:00","description":"Coherent combination of laser beams has become a key technology for the development of high-power lasers for various applications","breadcrumb":{"@id":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/#breadcrumb"},"inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/"]}]},{"@type":"BreadcrumbList","@id":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/aerospatial-et-defense\/filled-aperture-coherent-beam-combining-using-multi-plane-light-conversion-and-microcontroller-based-hill-climbing-for-optical-feeder-links\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.cailabs.com\/fr\/"},{"@type":"ListItem","position":2,"name":"Publications techniques","item":"https:\/\/www.cailabs.com\/fr\/publications-techniques-conferences\/"},{"@type":"ListItem","position":3,"name":"Filled Aperture Coherent Beam Combining using Multi-Plane Light Conversion and Microcontroller-Based Hill Climbing for Optical Feeder Links"}]},{"@type":"WebSite","@id":"https:\/\/www.cailabs.com\/fr\/#website","url":"https:\/\/www.cailabs.com\/fr\/","name":"Cailabs","description":"","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.cailabs.com\/fr\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"}]}},"_links":{"self":[{"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/publication\/5661","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/publication"}],"about":[{"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/types\/publication"}],"author":[{"embeddable":true,"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"wp:attachment":[{"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/media?parent=5661"}],"wp:term":[{"taxonomy":"categorie-publication","embeddable":true,"href":"https:\/\/www.cailabs.com\/fr\/wp-json\/wp\/v2\/categorie-publication?post=5661"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}