--- 格式版本: 2 标题: "Hollow-Core Fiber: Faster, Greener, but Is It Worth the Cost?" 原文链接: "https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-" 发布日期: "2026-08-11" 发布时间校准状态: "found" 发布时间需复核: "否" 发布时间来源: "manual" 发布时间证据: "该日期在正文中标题附近明确标注，且为local:strict_original_body来源，优先级最高，符合文章发布时间特征。" 发布时间校准原因: "该日期在正文中标题附近明确标注，且为local:strict_original_body来源，优先级最高，符合文章发布时间特征。" 发布时间校准置信度: "manual-confirmed" 发布时间候选数量: 0 发布时间严格候选数量: 0 发布时间原页读取状态: "manual" 发布时间未找到原因: "" 发布时间校准时间: "2026-08-18T08:30:32+08:00" 发布时间仲裁状态: "manual" 发布时间仲裁尝试次数: 0 发布时间仲裁耗时毫秒: 0 发现时间: "2026-08-12T03:53:36+08:00" 入库时间: "2026-08-11T19:58:40.107Z" 来源平台: "Data Center Knowledge 搜索" 搜索渠道: "source_template" 搜索词: "https://www.datacenterknowledge.com/search?q=latency" 匹配关键词: - "latency" - "performance" - "bandwidth" - "AI" 相关厂家: - "Microsoft" - "AWS" - "Google" 相关专家: [] 内容类型: "网页" 抓取工具: "Jina Reader" 清洗工具: "Jina Reader Markdown + Defuddle/Readability 正文提取" 原始附件: [] AI优质: "否" AI打分: 38 AI分档: "非优质" AI质检状态: "不通过" AI打分理由: "文章讨论空芯光纤在数据中心的应用，但仅泛泛介绍速度与能效，未涉及超节点/AI Rack/机柜级系统、GPU、供电、液冷、量产落地等核心主题，无技术细节与商业信号，属于科普性分析。" AI质检模型: "ali-deepseek-v4-flash" AI质检时间: "2026-08-12T03:58:48+08:00" AI主题相关性: 5 AI来源权威性: 10 AI新颖性: 8 AI技术细节: 5 AI商业部署信号: 0 AI完整性: 10 采集批次: "2026年8月12日2点04分20秒" 采集批次ID: "20260812-020420-289" 去重键: "https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-" --- Title: Hollow-Core Fiber: Faster, Greener, but Is It Worth the Cost? 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the Cost? Hollow-core fiber promises faster speeds and energy efficiency, but high costs and limited benefits may keep it from revolutionizing data centers. [![Image 17: Picture of Christopher Tozzi](https://eu-images.contentstack.com/v3/assets/blt8eb3cdfc1fce5194/bltb80c8a754e05f0af/6613d88533fe26f3ee4e5204/christophertozzi_2.jpg?width=100&auto=webp&quality=80&disable=upscale)](https://www.datacenterknowledge.com/author/christopher-tozzi) [Christopher Tozzi,](https://www.datacenterknowledge.com/author/christopher-tozzi)Technology Analyst May 18, 2026 4 Min Read ![Image 18: hollow-core fiber concept image](https://eu-images.contentstack.com/v3/assets/blt8eb3cdfc1fce5194/bltd40799aabb4ea77c/6a0b2f683c21f671418ba14b/Hollow-core-Fiber.jpg?width=1280&auto=webp&quality=80&disable=upscale) Hollow-core fiber offers faster speeds and energy efficiency, but high costs and limited benefits may keep it from transforming data center networking.Image: Alamy [](http://www.facebook.com/sharer/sharer.php?u=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](https://www.linkedin.com/sharing/share-offsite/?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](http://www.twitter.com/intent/tweet?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](https://www.reddit.com/submit?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-&title=Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F)[](https://bsky.app/intent/compose?text=Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F%20-%20https%3A%2F%2Fwww.datacenterknowledge.com%2Fnetworking%2Fhollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](mailto:?subject=Hollow-Core%20Fiber:%20Faster,%20Greener,%20but%20Is%20It%20Worth%20the%20Cost?&body=I%20thought%20the%20following%20from%20DataCenterKnowledge%20might%20interest%20you.%0D%0A%0D%0A%20Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F%0D%0Ahttps%3A%2F%2Fwww.datacenterknowledge.com%2Fnetworking%2Fhollow-core-fiber-faster-greener-but-is-it-worth-the-cost-) When it comes to the fiber cables that provide network connectivity to data centers, less is more. Specifically, less mass inside fiber cables translates to more bandwidth and higher transfer speeds. This has led to growing interest in hollow-core fiber, an emerging networking technology that could reshape the way data centers move information. But whether hollow-core fiber will come to a data center near you anytime soon – and whether it will actually deliver significant network performance boosts – remain open questions. Read on for perspective as we explain hollow-core fiber and its role in modern data center networking. ## What Is Hollow-Core Fiber? [Hollow-core fiber](https://www.datacenterknowledge.com/networking/will-hollow-core-fiber-change-the-latency-rules-of-data-center-networking-) is a type of optical fiber cable that transmits light through air or gas. It works this way because the fiber’s core is hollow space (hence the name) rather than being packed with silica, as in the case of traditional fiber-optic cable works. Related:[AI Demands Stretch the Limits of Data Center Retrofits](https://www.datacenterknowledge.com/data-center-construction/ai-demands-stretch-the-limits-of-data-center-retrofits) Light moves faster through air than through silica, and since fiber-optic cables transmit data using light waves, those that feature hollow cores can move information more quickly than traditional fiber-optic networks. ![Image 19: Hollow-core fiber manufacturing](https://eu-images.contentstack.com/v3/assets/blt8eb3cdfc1fce5194/bltb2537ad65320c348/6a0b2f15ba545bd2fd57ed81/Manufacturing_Process_Examples_1.png?width=1400&auto=webp&quality=80&disable=upscale) Examples of hollow-core fiber during the manufacturing process. (Image: Microsoft) ## How Much Faster Is Hollow-Core Fiber? According to [Microsoft](https://spectrum.ieee.org/hollow-core-fiber), hollow-core fiber can increase data transmission speeds by up to 45%, while tripling maximum network bandwidth. It’s important to note, however, that these figures reflect testing in laboratory settings, rather than real-world deployments of hollow-core fiber. Note, too, that the performance rate of hollow-core fiber networks can vary depending on the exact design of the cables. Strategies such as nesting tubes inside each other within cables, and creating vacuums inside cores, can boost data transmission rates, but not all hollow-core fiber cables include these capabilities. Transmission speeds are also lower when cables span a longer geographical area – although hollow-core fiber generally performs better in this respect than traditional fiber, making it more feasible to [build data centers in remote areas](https://www.datacenterknowledge.com/data-center-site-selection/urban-vs-rural-why-data-centers-are-built-where-they-are) without compromising network performance. ## The Energy Benefits of Hollow-Core Fiber Alongside performance boosts, hollow-core fiber offers [energy-efficiency](https://www.datacenterknowledge.com/energy-power-supply/how-data-centers-redefined-energy-and-power-in-2025) advantages, too. This is mainly because hollow-core network infrastructure achieves lower rates of signal loss (meaning a reduction in the quality of signals as they move through a transmission medium, like fiber cable). The way that networks address signal loss is by deploying amplifiers to add intensity to light signals, but this leads to higher energy usage because amplifiers consume electricity. Related:[AI Demands Stretch the Limits of Data Center Retrofits](https://www.datacenterknowledge.com/data-center-construction/ai-demands-stretch-the-limits-of-data-center-retrofits) Thus, lower signal loss translates to a reduced need for amplification and, by extension, more energy efficiency. ## The Limitations of Hollow-Core Fiber While hollow-core fiber has a lot of promise, it’s also subject to some drawbacks and limitations. A big one is [higher manufacturing costs](https://www.fiber-mart.com/news/hollowcore-fiber-shatters-physical-limits-ushering-in-a-new-era-for-optical-communications-a-6476.html?srsltid=AfmBOoqEq2q65tPZ95wu653EvG7I0H0FT3mIBXl5Zbn2mZZx72VNI9Hf). Creating cables with hollow cores is more complex than manufacturing silica-filled ones – so much so that prices for hollow-core start at approximately [$600 per meter](https://www.thorlabs.com/hollow-core-photonic-crystal-fibers?tabName=Overview), compared to just a [few dollars per meter](https://www.thorlabs.com/single-mode-fiber?tabName=Overview) for traditional fiber optic cable. The performance boosts of Hollow-core fiber are also limited. Latency reductions of 30-40% are significant, but they’re also not necessarily enough to be true game-changers for most use cases. Even on networks powered by hollow-core fiber, latency rates might be too high to support applications like [high-frequency trading](https://www.datacenterknowledge.com/networking/what-ai-data-centers-can-learn-from-high-frequency-trading) or guiding autonomous vehicles, where data needs to move almost instantaneously and latency rates of just a few milliseconds are far too high. Likewise, tripling network bandwidth – which hollow-core fiber can theoretically do – is not a bad thing, but it also doesn’t move the needle all that much. As for energy savings, hollow-core fiber is not likely to prove revolutionary in this area, either. It does significantly reduce the need for amplification, but the total energy consumption of fiber optic amplifiers on a large-scale network is typically no greater than that of two or three servers. When compared to total data center energy consumption, the energy savings of hollow-core fiber are negligible. Related:[Inside Europe’s First Microgrid Data Center](https://www.datacenterknowledge.com/data-center-construction/inside-europe-s-first-microgrid-data-center) So, the question facing the networking and data center industries is whether the performance and power advantages of hollow-core fiber over traditional fiber – which are effectively only incremental – are worth the dramatically higher costs. ## Who’s Using Hollow-Core Networks in Data Centers? Likely due to the high costs of hollow-core fiber, few data centers are actually leveraging it at present. The major exception is Microsoft, which has reportedly [deployed](https://www.sdxcentral.com/news/microsoft-unveils-micro-led-innovation-to-halve-data-center-energy-use/) hollow-core fiber for some Azure data centers. But the company hasn’t specified which ones, or stated whether hollow-core fiber has fully replaced traditional fiber in these locations or is just an experimental supplement. Beyond the data center world, some ISPs, most notably [Comcast](https://corporate.comcast.com/press/releases/comcast-first-isp-hollow-core-fiber-faster-speed-lower-latency), have experimented with hollow-core fiber. But large-scale deployments appear elusive. This may change if manufacturing costs for hollow-core fiber decrease. But don’t expect hollow-core fiber to revolutionize networking in the typical data center anytime soon. [](http://www.facebook.com/sharer/sharer.php?u=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](https://www.linkedin.com/sharing/share-offsite/?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](http://www.twitter.com/intent/tweet?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](https://www.reddit.com/submit?url=https://www.datacenterknowledge.com/networking/hollow-core-fiber-faster-greener-but-is-it-worth-the-cost-&title=Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F)[](https://bsky.app/intent/compose?text=Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F%20-%20https%3A%2F%2Fwww.datacenterknowledge.com%2Fnetworking%2Fhollow-core-fiber-faster-greener-but-is-it-worth-the-cost-)[](mailto:?subject=Hollow-Core%20Fiber:%20Faster,%20Greener,%20but%20Is%20It%20Worth%20the%20Cost?&body=I%20thought%20the%20following%20from%20DataCenterKnowledge%20might%20interest%20you.%0D%0A%0D%0A%20Hollow-Core%20Fiber%3A%20Faster%2C%20Greener%2C%20but%20Is%20It%20Worth%20the%20Cost%3F%0D%0Ahttps%3A%2F%2Fwww.datacenterknowledge.com%2Fnetworking%2Fhollow-core-fiber-faster-greener-but-is-it-worth-the-cost-) ## About the Author [![Image 20: Christopher Tozzi](https://eu-images.contentstack.com/v3/assets/blt8eb3cdfc1fce5194/bltb80c8a754e05f0af/6613d88533fe26f3ee4e5204/christophertozzi_2.jpg?width=400&auto=webp&quality=80&disable=upscale)](https://www.datacenterknowledge.com/author/christopher-tozzi) [Christopher Tozzi](https://www.datacenterknowledge.com/author/christopher-tozzi) Technology Analyst Christopher Tozzi is a technology analyst with subject matter expertise in cloud computing, application development, open source software, virtualization, containers and more. He also lectures at a major university in the Albany, New York, area. His book, “For Fun and Profit: A History of the Free and Open Source Software Revolution,” was published by MIT Press. [See more from Christopher Tozzi](https://www.datacenterknowledge.com/author/christopher-tozzi) [![Image 21: Add as a preferred source on Google](https://eu-images.contentstack.com/v3/assets/blt8eb3cdfc1fce5194/blt2786692164e47749/69b46950fc6bd41335ba3b1b/google_preferred_source_badge_dark@2x.png?width=800&auto=webp&quality=80&disable=upscale)](https://google.com/preferences/source?q=https://www.datacenterknowledge.com/) ## Want more Data Center Knowledge stories in your Google search results? [Add Us Now](https://google.com/preferences/source?q=https://www.datacenterknowledge.com/) Subscribe to the Data Center Knowledge Newsletter Get analysis and expert insight on the latest in data center business and technology delivered to your inbox daily. 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