{"id":213964,"date":"2025-05-14T06:24:03","date_gmt":"2025-05-14T11:24:03","guid":{"rendered":"https:\/\/lifeboat.com\/blog\/2025\/05\/dual-laser-technique-lowers-brillouin-sensing-frequency-to-200-mhz"},"modified":"2025-05-14T06:24:03","modified_gmt":"2025-05-14T11:24:03","slug":"dual-laser-technique-lowers-brillouin-sensing-frequency-to-200-mhz","status":"publish","type":"post","link":"https:\/\/lifeboat.com\/blog\/2025\/05\/dual-laser-technique-lowers-brillouin-sensing-frequency-to-200-mhz","title":{"rendered":"Dual-laser technique lowers Brillouin sensing frequency to 200 MHz"},"content":{"rendered":"<p><a class=\"aligncenter blog-photo\" href=\"https:\/\/lifeboat.com\/blog.images\/dual-laser-technique-lowers-brillouin-sensing-frequency-to-200-mhz.jpg\"><\/a><\/p>\n<p>Scientists have developed a dual-laser Brillouin optical correlation-domain reflectometry (BOCDR) system that uses two frequency-modulated lasers. By scanning the relative modulation phase between the pump and reference lasers, the setup measures strain and temperature all along an optical fiber. In a proof-of-concept test on a 13-meter silica fiber, the team recorded Brillouin gain spectra (BGS) at only about 200 MHz\u2014over 50 times lower than the usual 11 GHz band.<\/p>\n<p>The research was <a href=\"https:\/\/iopscience.iop.org\/article\/10.1088\/2515-7647\/adcddb\" target=\"_blank\">published<\/a> in the <i>Journal of Physics: Photonics<\/i> on April 25, 2025.<\/p>\n<p>\u201cThe dual-laser approach makes BOCDR equipment simpler, more cost-effective, and easier to deploy, giving engineers a practical tool for long-term structural health monitoring, factory process control, and many other sensing tasks,\u201d said senior author Associate Professor Yosuke Mizuno of Yokohama National University.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Scientists have developed a dual-laser Brillouin optical correlation-domain reflectometry (BOCDR) system that uses two frequency-modulated lasers. By scanning the relative modulation phase between the pump and reference lasers, the setup measures strain and temperature all along an optical fiber. In a proof-of-concept test on a 13-meter silica fiber, the team recorded Brillouin gain spectra (BGS) [\u2026]<\/p>\n","protected":false},"author":427,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1495,219],"tags":[],"class_list":["post-213964","post","type-post","status-publish","format-standard","hentry","category-health","category-physics"],"_links":{"self":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/213964","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/users\/427"}],"replies":[{"embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/comments?post=213964"}],"version-history":[{"count":0,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/posts\/213964\/revisions"}],"wp:attachment":[{"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/media?parent=213964"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/categories?post=213964"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lifeboat.com\/blog\/wp-json\/wp\/v2\/tags?post=213964"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}