{"id":76286,"date":"2025-12-02T14:16:00","date_gmt":"2025-12-02T13:16:00","guid":{"rendered":"https:\/\/fhi.nl\/nieuws\/hollow-core-fiber-power-and-precision-for-critical-networks\/"},"modified":"2025-12-02T14:21:36","modified_gmt":"2025-12-02T13:21:36","slug":"hollow-core-fiber-power-and-precision-for-critical-networks","status":"publish","type":"news","link":"https:\/\/fhi.nl\/en\/news\/hollow-core-fiber-power-and-precision-for-critical-networks\/","title":{"rendered":"Hollow-core fiber: power and precision for critical networks"},"content":{"rendered":"<header id=\"header\" class=\"header header--high\">\n\n\t\t\t\t\t\t\t\t\t\t<div class=\"header__background header__background--high\">\n\t\t\t\t\t<img decoding=\"async\" class=\"header__background-image\" src=\"https:\/\/fhi.nl\/app\/uploads\/2025\/12\/20250190_header-blog_hollow-core_blue_cable_as_637352351_1270x546.jpg\" alt=\"\">\n\t\t\t\t<\/div>\n\t\t\t\t\t\t\n\t\n\t<div class=\"container\">\n\t\t<div class=\"header__content\">\n\t\t\t<div class=\"header__first header__first--alone\">\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t\n\t\t\t\t<h1 class=\"header__title\" >\n\t\t\t\t\tHollow-core fiber: power and precision for critical networks\t\t\t\t<\/h1>\n\n\t\t\t\t<div class=\"header__dots-line\">\n\t\t\t\t\t<svg width=\"431\" height=\"9\" viewbox=\"0 0 431 9\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M430.799 4.192a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.135 1.135 0 1 1-2.27 0 1.135 1.135 0 0 1 2.27 0Zm-27.27 0a1.136 1.136 0 1 1-2.272-.001 1.136 1.136 0 0 1 2.272 0Zm-27.272 0a1.39 1.39 0 1 1-2.78 0 1.39 1.39 0 0 1 2.78 0Zm-27.78 0a1.645 1.645 0 1 1-3.29 0 1.645 1.645 0 0 1 3.29 0Zm-28.29 0a1.9 1.9 0 1 1-3.799 0 1.9 1.9 0 0 1 3.799 0Zm-28.799 0a2.154 2.154 0 1 1-4.308 0 2.154 2.154 0 0 1 4.308 0Zm-29.308 0a2.41 2.41 0 1 1-4.819 0 2.41 2.41 0 0 1 4.819 0Zm-29.819 0a2.663 2.663 0 1 1-5.326.001 2.663 2.663 0 0 1 5.326-.001Zm-30.327 0a2.919 2.919 0 1 1-5.837 0 2.919 2.919 0 0 1 5.837 0Zm-30.837 0a3.173 3.173 0 1 1-6.345.001 3.173 3.173 0 0 1 6.345 0Zm-31.346 0a3.428 3.428 0 1 1-6.856 0 3.428 3.428 0 0 1 6.856 0Zm-31.856 0a3.683 3.683 0 1 1-7.365 0 3.683 3.683 0 0 1 7.365 0Zm-32.365 0a3.937 3.937 0 1 1-7.875 0 3.937 3.937 0 0 1 7.875 0Zm-32.874 0a4.192 4.192 0 1 1-8.384 0 4.192 4.192 0 0 1 8.384 0Z\" fill=\"#FFF960\"\/><\/svg>\t\t\t\t<\/div>\n\n\t\t\t\t\n\t\t\t\t\n\t\t\t<\/div>\n\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/header>\n\n\t<div class=\"header__meta\">\n\t<div class=\"container\">\n\t\t<div class=\"header__meta__category\">\n\n\t\t\t\n\t\t\t\t\t\t\t<div class=\"header__meta__detail\">\n\t\t\t\t\t<div>Subject<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/fhi.nl\/en\/kennishub\/?_onderwerp_kennishub=communicatie-technologie\" class=\"header__meta__detail--categorie\">\n\t\t\t\t\t\t\t\tCommunication technology\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/fhi.nl\/en\/kennishub\/?_onderwerp_kennishub=industriele-elektronica\" class=\"header__meta__detail--categorie\">\n\t\t\t\t\t\t\t\tIndustrial Electronics\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t<\/div>\n<\/div>\n\n<div class=\"text bg--white\">\n\t<div class=\"container\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"text__content text__content--1-col\">\n\t\t\t<div class=\"inner-block text\">\r\n<div class=\"prose mb-4 sm:mb-8 lg:w-5\/6 lg:mx-auto xl:w-4\/6\">\r\n<p>As fiber-optic networks must continuously adapt to the exponential growth of data while maintaining low latency, a new technology is emerging on the market and rapidly gaining traction. This technology, known as <strong>hollow-core fiber<\/strong>, promises to transform network performance, particularly in critical environments such as data centers and financial infrastructures.<\/p>\r\n<p>\u00a0<\/p>\r\n<h4>What is hollow-core fiber?<\/h4>\r\n<p>Unlike conventional fiber, which has a solid glass core, this new generation of fiber features a central channel filled with gas or air. Light propagates through this medium, which has a much lower refractive index than glass. Specialized cladding structures, often made of glass with periodic patterns, guide the optical signal through the channel and prevent it from escaping. This fundamental change accelerates the propagation of light\u2014no longer slowed by glass\u2014and enables an unprecedented reduction in latency.<\/p>\r\n<p>\u00a0<\/p>\r\n<h4>Speed and stability for demanding environments<\/h4>\r\n<p>Hollow-core fiber technology addresses a pressing need: delivering speed without compromising stability. In a world where data centers, cloud environments, and real-time services demand ever-higher performance, latency has become a critical issue. Hollow-core fiber emerges as a key player thanks to its many advantages:<\/p>\r\n<ul>\r\n<li>Increased speed: Light travels at about 200,000 km\/s through glass. In hollow-core fiber, where light travels in a vacuum, speeds approach 300,000 km\/s. That&#039;s a 40% increase\u2014an essential advantage in environments where every microsecond counts.<\/li>\r\n<li>Reduced signal loss: Recent advances drop signal losses to as low as 0.05 dB\/km, outperforming traditional single-mode fiber and allowing for longer-distance transmissions.<\/li>\r\n<li>Tolerance to nonlinear effects: With its wider, non-solid core, hollow-core fiber is less sensitive to optical distortions, resulting in higher signal quality.<\/li>\r\n<\/ul>\r\n<p>\u00a0<\/p>\r\n<h4>Turning performance into strategic advantage<\/h4>\r\n<p>These benefits translate into a significant strategic lever, opening the door to key applications in next-generation networks, including high-frequency trading, cloud computing, and 5G networks. Some of these applications include:<\/p>\r\n<p>\u00a0<\/p>\r\n<p><strong>1. Data center interconnection (DCI)<\/strong><\/p>\r\n<p>Cloud giants are among the first to adopt hollow-core fiber to enhance interconnections between their data centers. This technology allows them to:<\/p>\r\n<ul>\r\n<li>Reduce latency between sites over 80 km apart\u2014crucial for real-time data sync and AI\/ML model training\u2014enabling distant sites to operate as one and overcome energy limits on data center builds.<\/li>\r\n<li>Increase strategic flexibility by selecting infrastructure locations based on economic criteria like energy or real estate costs, while maintaining optimal performance between sites.<\/li>\r\n<\/ul>\r\n<p>\u00a0<\/p>\r\n<p><strong>2. Finance and nano-trading<\/strong><\/p>\r\n<p>In financial markets, speed equals profit. Being able to buy or sell microseconds ahead of competitors can represent millions. Hollow-core fiber becomes a strategic asset by reducing latency between trading venues and giving high-frequency traders a decisive competitive edge.<\/p>\r\n<p>\u00a0<\/p>\r\n<p><strong>3.Artificial intelligence (AI)<\/strong><\/p>\r\n<p>AI workloads\u2014driven by machine learning algorithms and neural networks\u2014require the rapid processing of massive datasets and real-time decision-making. These applications, from autonomous vehicles to smart devices, cannot afford network lag or interruptions. Hollow-core fiber was developed to meet these heavy demands, offering superior network quality, improved latency, and secure data transmission. By transporting more data with lower latency, HCF enables quick reactions and split-second decisions, allowing AI models to process information faster and perform more accurately in mission-critical environments.<\/p>\r\n<p>\u00a0<\/p>\r\n<h4>Progress and challenges: the realities of hollow-core fiber<\/h4>\r\n<p>Although promising, this technology comes with challenges:<\/p>\r\n<ul>\r\n<li><strong>Mechanical sensitivity: <\/strong>Cabling remains more delicate than with conventional fiber.<\/li>\r\n<li><strong>Compatibility with existing networks:<\/strong>\u00a0Hybrid deployments (traditional + hollow-core) will need to coexist, requiring precise measurements and reliable diagnostics.<\/li>\r\n<li><strong>Standardization and certification:<\/strong>\u00a0The current lack of established standards complicates large-scale integration. As with data center certification, rigor is essential to ensure consistent performance.<\/li>\r\n<\/ul>\r\n<p>Progress, however, is rapid. Each development cycle introduces advancements that make hollow-core fiber increasingly deployable and less experimental.<\/p>\r\n<p>\u00a0<\/p>\r\n<h4>EXFO hollow core fiber test solutions<\/h4>\r\n<p>Traditional approaches often fall short when applied to this disruptive technology, which demands new methods for measuring loss, return loss, and overall transmission quality. EXFO, a leader in innovative fiber testing, is at the forefront of this transition, equipping data centers, service providers and innovators with a comprehensive portfolio of HCF-optimized solutions<\/p>\r\n<p>Among these solutions, OTDRs stand out as EXFO&#039;s core expertise and leading product family. Unlike other instruments that are inherently compatible with HCF, the OTDR required specific developments to ensure reliable results.<\/p>\r\n<p>For field deployment, EXFO&#039;s Hollow-Core Fiber OTDR analysis software, part of a <a href=\"https:\/\/www.exfo.com\/en\/products\/field-network-testing\/otdr-iolm\/ns-348x\/\"><strong>Hollow-Core Fiber OTDR Test Kit<\/strong><\/a>, provides accurate fault location and loss measurements where traditional OTDRs fall short. Its high dynamic range makes the hardware inherently well suited for HCF characterization. Going further, the dedicated uni- and bi-directional analysis software extracts key fiber parameters such as loss, ORL and length. The adapted analysis also enables splice loss and reflectivity measurements\u2014capabilities that require specific innovation for HCF, making it a unique and essential tool for this new fiber technology.<\/p>\r\n<p>Other hollow-core fiber capable products for testing in the field include the <a href=\"https:\/\/shop.cnrood.com\/ftbx-570\"><strong>FTBx-570<\/strong><\/a> single-ended CD\/PMD analyzer, which ensures reliable characterization of dispersion parameters that directly impact high-speed performance. The <a href=\"https:\/\/shop.cnrood.com\/maxtester-940-fiber-certifier-olts\"><strong>MaxTester 945<\/strong><\/a> optical loss test set (OLTS), with an optional feature, streamlines validation of fiber length, insertion loss and return loss, while the <a href=\"https:\/\/shop.cnrood.com\/fip-500-fiber-inspection-probe\"><strong>FIP-500<\/strong><\/a> fiber inspection scope safeguards network integrity with fast, automated end-face analysis. The<strong> <a title=\"FTBx-88810 Series\" href=\"https:\/\/www.exfo.com\/en\/products\/lab-manufacturing-testing\/network-protocol-testing\/ethernet-testing\/ftbx-88810-series\/\" target=\"_blank\" rel=\"noopener\">FTBx-88810 Series<\/a><\/strong> 1G-800G test solution, equipped with the EtherBERT test application, enables precise latency measurements essential for validating the ultra-low delay performance of hollow core fiber, supporting next-generation high-speed, time-sensitive networks.<\/p>\r\n<p>At the lab and R&amp;D level, the <a title=\"CTP10\" href=\"https:\/\/www.exfo.com\/en\/products\/lab-manufacturing-testing\/test-platforms\/ctp10\/\" target=\"_blank\" rel=\"noopener\"><strong>CTP10<\/strong><\/a> test system delivers ultra-high resolution spectral loss measurements\u2014down to 0.02 pm across the 1240 nm to 1680 nm range\u2014enabling precise analysis of effects such as CO\u2082 absorption over long distances of more than 100 km.<\/p>\r\n<p>\u00a0<\/p>\r\n<h4>Preparing the networks of tomorrow<\/h4>\r\n<p>Hollow-core fiber is not just a technical innovation\u2014it represents a strategic evolution that could redefine how networks meet the growing demands of the digital world. It is clear that deployment, testing, and monitoring teams must become familiar with this technology and anticipate its integration into their future practices.<\/p>\r\n<p>By combining lab-grade precision with field-ready practicality, decades of fiber testing expertise, and a strong commitment to innovation, EXFO provides the industry with a clear path to scale hollow-core fiber from research environments into live networks\u2014paving the way for faster, more efficient and more reliable connectivity.<\/p>\r\n<\/div>\r\n<\/div>\r\n<div class=\"inner-block buttons\"><a class=\"button blue\" href=\"https:\/\/cnrood.com\/contact\/\" target=\"\"> Contact us for more information <\/a><\/div>\t\t<\/div>\n\t<\/div>\n<\/div>\r\n\t<div class=\"articles bg--offwhite automatic\">\r\n\t\t<div class=\"container\">\r\n\t\t\t<div class=\"articles__header\">\r\n\t\t\t\t\t\t\t\t\t<div class='heading-wrapper'><svg width=\"13\" height=\"13\" viewbox=\"0 0 13 13\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><circle cx=\"6.394\" cy=\"6.5\" r=\"6.394\" fill=\"#000\"\/><\/svg><h2>Related articles<\/h2><\/div>\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"\/en\/profiel\/cnrood\/\" class=\"button button--outline\">view profile<\/a>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t<div class=\"post-grid post-grid--no-padding\">\r\n\t\t\t\t\n<a class=\"single-item single-item__articles\" href=\"https:\/\/fhi.nl\/en\/news\/terugblik-ledennetwerkbijeenkomst\/\" data-id=\"35525\">\n\t<div class=\"single-item__articles-icon\">\n\t\t<svg width=\"35\" height=\"35\" viewbox=\"0 0 35 35\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<mask id=\"mask0_1182_5532\" style=\"mask-type:luminance\" maskunits=\"userSpaceOnUse\" x=\"0\" y=\"0\" width=\"35\" height=\"35\">\n<path d=\"M0 0H35V35H0V0Z\" fill=\"white\"\/>\n<\/mask>\n<g mask=\"url(#mask0_1182_5532)\">\n<path d=\"M5.12695 9.22852H1.02539V31.9238H10.4299C12.2868 31.9238 14.0678 32.6615 15.3809 33.9746H19.6191C20.9322 32.6615 22.7132 31.9238 24.5701 31.9238H33.9746V11.2793H29.873\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M17.5 9.22852H18.1426C20.0088 7.89544 22.2237 7.17773 24.5615 7.17773H29.873V27.8223H24.5615C22.2237 27.8223 20.0088 28.54 18.1426 29.873H16.8574C14.9912 28.54 12.7763 27.8223 10.4385 27.8223H5.12695V5.12695H9.22852\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M9.22852 1.02539V21.6699C13.759 21.6699 17.5 25.3425 17.5 29.873V9.22852C17.5 4.698 13.759 1.02539 9.22852 1.02539Z\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<\/g>\n<\/svg>\n\t<\/div>\n\t<div class=\"single-item__articles-title\"><div class='heading-wrapper'><h3>Member network meeting review<\/h3><\/div><\/div>\n\t<div class=\"single-item__articles-terms\">\n\t\t\n\t\t\n\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Federated<\/span>\n\t\t\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Events<\/span>\n\t\t\t\t\t<\/div>\n\t<div class=\"single-item__articles-author-date-wrapper\">\n\t\t\t\t\t<div class=\"single-item__articles-author\">\n\t\t\t\tFHI, Federation of Technology Industries\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"single-item__articles-date\">\n\t\t\t\tJuly 4, 2022\t\t\t<\/div>\n\t\t\t<\/div>\n<\/a>\n\n<a class=\"single-item single-item__articles\" href=\"https:\/\/fhi.nl\/en\/news\/beveiliging-binnen-de-energie-transitie-van-energie-opslag-tot-elektrisch-aangedreven-materieel\/\" data-id=\"42763\">\n\t<div class=\"single-item__articles-icon\">\n\t\t<svg width=\"35\" height=\"35\" viewbox=\"0 0 35 35\" fill=\"none\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\">\n<mask id=\"mask0_1182_5532\" style=\"mask-type:luminance\" maskunits=\"userSpaceOnUse\" x=\"0\" y=\"0\" width=\"35\" height=\"35\">\n<path d=\"M0 0H35V35H0V0Z\" fill=\"white\"\/>\n<\/mask>\n<g mask=\"url(#mask0_1182_5532)\">\n<path d=\"M5.12695 9.22852H1.02539V31.9238H10.4299C12.2868 31.9238 14.0678 32.6615 15.3809 33.9746H19.6191C20.9322 32.6615 22.7132 31.9238 24.5701 31.9238H33.9746V11.2793H29.873\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M17.5 9.22852H18.1426C20.0088 7.89544 22.2237 7.17773 24.5615 7.17773H29.873V27.8223H24.5615C22.2237 27.8223 20.0088 28.54 18.1426 29.873H16.8574C14.9912 28.54 12.7763 27.8223 10.4385 27.8223H5.12695V5.12695H9.22852\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<path d=\"M9.22852 1.02539V21.6699C13.759 21.6699 17.5 25.3425 17.5 29.873V9.22852C17.5 4.698 13.759 1.02539 9.22852 1.02539Z\" stroke=\"#2A5CEE\" stroke-width=\"2\" stroke-miterlimit=\"10\"\/>\n<\/g>\n<\/svg>\n\t<\/div>\n\t<div class=\"single-item__articles-title\"><div class='heading-wrapper'><h3>Security within the energy transition. From energy storage to electrically powered equipment.<\/h3><\/div><\/div>\n\t<div class=\"single-item__articles-terms\">\n\t\t\n\t\t\n\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Power Electronics &amp; Energy Storage<\/span>\n\t\t\t\t\t\t\t\t<span class=\"button button--outline single-item__articles-term--branche single-item__articles-term\">Members content<\/span>\n\t\t\t\t\t<\/div>\n\t<div class=\"single-item__articles-author-date-wrapper\">\n\t\t\t\t\t<div class=\"single-item__articles-author\">\n\t\t\t\tBender Benelux BV\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"single-item__articles-date\">\n\t\t\t\tJanuary 10, 2020\t\t\t<\/div>\n\t\t\t<\/div>\n<\/a>\n\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t<\/div>","protected":false},"excerpt":{"rendered":"<p>As fiber-optic networks must continuously adapt to the exponential growth of data while maintaining low latency, a new technology is emerging on the market and rapidly gaining traction. This technology, known as hollow-core fiber, promises to transform network performance, particularly in critical environments such as data centers and financial infrastructures.<\/p>","protected":false},"featured_media":76287,"template":"","branches":[],"events":[364,370,368],"secretariat":[],"categories":[16,57],"themes_tax":[523],"content_types":[514],"class_list":["post-76286","news","type-news","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Hollow-core fiber: power and precision for critical networks<\/title>\n<meta name=\"description\" content=\"Hollow-core fiber, promises to transform network performance, particularly in critical environments such as data centers and financial infrastructures.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link 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