{"id":1370,"date":"2024-08-16T04:31:41","date_gmt":"2024-08-16T04:31:41","guid":{"rendered":"https:\/\/novanta.com\/fr\/precision-manufacturing\/resources\/whitepapers\/couplage-de-fibre-monomode-a-haute-puissance\/"},"modified":"2026-09-02T11:01:45","modified_gmt":"2026-09-02T11:01:45","slug":"couplage-de-fibre-monomode-a-haute-puissance","status":"publish","type":"novanta_tech_paper","link":"https:\/\/novanta.com\/fr\/precision-manufacturing\/ressources\/documents-blancs\/couplage-de-fibre-monomode-a-haute-puissance\/","title":{"rendered":"Couplage de fibre monomode \u00e0 haute puissance"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\" id=\"h-technical-paper-overview\">Pr\u00e9sentation de l&rsquo;article technique<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"h-high-power-single-mode-fibre-coupling-80-single-mode-fibre-coupling-at-3w-close-to-the-theoretical-limit\"><strong>Couplage haute puissance sur fibre monomode<\/strong><br><em>Couplage \u00e0 80 % dans une fibre monomode \u00e0 3 W \u2014 proche de la limite th\u00e9orique.<\/em><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le couplage en fibre monomode semble simple dans les manuels : on envoie un laser dans un c\u0153ur de quelques microns, on obtient un faisceau gaussien TEM00 propre \u00e0 l&rsquo;autre extr\u00e9mit\u00e9. En pratique, au-del\u00e0 de quelques centaines de milliwatts, les rendements de couplage chutent, une d\u00e9rive de l\u2019orientation du faisceau appara\u00eet, et la plupart des applications \u00e0 haute puissance se rabattent sur des fibres multimodes \u2014 ce qui compromet la qualit\u00e9 du faisceau requise par l\u2019application au d\u00e9part.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cet article technique, fruit d\u2019une collaboration entre cinq auteurs de Novanta et Schaefter+Kirchhoff (Hambourg), fait \u00e9tat d\u2019un rendement de couplage de 80 % \u2014 proche du plafond th\u00e9orique de 85 % \u2014 pour les lasers DPSS \u00ab gem \u00bb et \u00ab opus \u00bb de Novanta (473-1064 nm), avec une puissance de sortie de 2,4 W pour une puissance d\u2019entr\u00e9e de 3 W \u00e0 532 nm, ainsi qu\u2019une stabilit\u00e9 m\u00e9canique prouv\u00e9e par une r\u00e9sistance aux vibrations de 4,9 g RMS et un fonctionnement continu de 45 heures.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-key-takeaways-include\">Principaux points \u00e0 retenir :<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pourquoi le couplage par fibre monomode \u00e0 haute puissance a toujours \u00e9t\u00e9 si difficile \u2014 la plupart des applications se contentent du mode multimode<\/li>\n\n\n\n<li>Comment le syst\u00e8me Novanta + Schaefter+Kirchhoff atteint un rendement de 80 %, soit 5 points en dessous du plafond th\u00e9orique de 85 %<\/li>\n\n\n\n<li>Quand le couplage par fibre monomode devient indispensable : microscopie \u00e0 super-r\u00e9solution, d\u00e9tection quantique, travaux sur les centres NV, applications sensibles \u00e0 l\u2019orientation du faisceau<\/li>\n\n\n\n<li>Les performances du syst\u00e8me en conditions de contrainte : un rendement sup\u00e9rieur \u00e0 75 % sur une variation de temp\u00e9rature de 16 \u00b0C, aucune d\u00e9gradation apr\u00e8s des vibrations de 4,9 g RMS<\/li>\n\n\n\n<li>Une gamme de longueurs d\u2019onde pratique : 473, 532, 561, 640, 660, 671, 1 064 nm avec un couplage garanti &gt; 70 %<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"h-\">T\u00e9l\u00e9chargez le document technique complet pour consulter les courbes d\u2019efficacit\u00e9 de couplage en fonction de la temp\u00e9rature, les r\u00e9sultats des tests de vibration et de stabilit\u00e9 \u00e0 long terme, ainsi que la matrice de disponibilit\u00e9 des longueurs d\u2019onde pour les gammes de lasers DPSS \u00ab gem \u00bb et \u00ab opus \u00bb de Novanta \u2014 avant de choisir une fibre multimode et d\u2019accepter la perte de qualit\u00e9 du faisceau que votre application de microscopie ou de d\u00e9tection quantique ne peut se permettre.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Pr\u00e9sentation de l&rsquo;article technique Couplage haute puissance sur fibre monomodeCouplage \u00e0 80 % dans une fibre monomode \u00e0 3 W \u2014 proche de la limite th\u00e9orique. Le couplage en fibre monomode semble simple dans les manuels : on envoie un laser dans un c\u0153ur de quelques microns, on obtient un faisceau gaussien TEM00 propre \u00e0 [&hellip;]<\/p>\n","protected":false},"author":342,"featured_media":1050,"template":"","meta":{"_acf_changed":false,"card_thumbnail_id":0,"show_table_of_content":true},"class_list":["post-1370","novanta_tech_paper","type-novanta_tech_paper","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.1 (Yoast SEO v28.1) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>High-Power Single-Mode Fibre Coupling | Novanta<\/title>\n<meta name=\"description\" content=\"D\u00e9couvrez comment coupler un laser \u00e0 \u00e9tat solide \u00e0 onde continue (CW) dans une fibre monomode \u00e0 haute puissance sans compromettre la qualit\u00e9 du faisceau, en vous appuyant sur les donn\u00e9es issues de la plateforme GEM de 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