PROMOTIONAL FEATURE LINFIBER
Linfiber Tech. announces its hollow-core fiber cable solution Linearcore TM featuring an innovative anti-resonant hollow-core fiber (AR-HCF) structure with loss of 0.5 dB/ km in C+L band, offering 30% lower latency than standard silica glass fibers. Linfiber Tech Unveils LinearCore™: The Next-Generation Hollow-Core Fiber Cable for Low-Latency, High-Capacity Optical Networks
O ptical fibers communications. While solid-core fibers have pushed performance close to its fundamental limits, hollow-core fiber (HCF) are emerging as a game changer for next generation optical communication, thanks to their unique “4 low metrics”: low latency, low loss, low dispersion and low nonlinearity – all of which address key bottlenecks in current communication systems. Under a HCF link, oDSP could be significantly simplified, as there is minimal need for nonlinear and dispersion compensation. Latency is enhanced at both the optical and electrical layer, enabling increased distance/spacing between data centers. have formed the backbone of global Fewer or even no amplifiers and repeaters are required, since much higher power could be injected at the input. All of these lead to reduced energy consumption and overall system cost. Over the past 20 years of AR-HCF development, the core members of Linfiber Tech have been at the forefront of research, making several foundational contributions. In 2010, Linfiber’s founder and CEO, Yingying Wang, developed the world’s first hypocycloid-core HCF (CLEO 2010 PDP CPDB4) during her PhD study at University of Bath, UK under the supervision of Prof. Fetah Benabid. This innovation reduced loss levels by more than an order of
magnitude, from 1000 dB/km to 40 dB/km—a landmark achievement that catalyzed the rapid development of low-loss AR-HCF over the following 15 years. By 2018, the team had developed the world’s first conjoined- tube AR-HCF, further reducing loss to 2 dB/km (Nat. Commun. 9, 2828). In 2022, they achieved the world’s first 0.1 dB pluggable hollow-core to solid-core connector (Opt. Ex, 30, 15149). Most recently, in 2024, Linfiber reduced the transmission loss to 0.1 dB/km (Advanced Photonics Congress JTh4A.3). In Jun. 2024, Linfiber provides China Mobile with HCF cable for 800G transmission test network in Guangdong province. The cable achieved remarkable performance metric over a 20 km link, including self-splice loss of <0.2 dB, hollow- core to solid-core connection loss of <0.3 dB, and an installed cable loss of 0.6 dB/km (including connectors and splices). This pilot project successfully implemented HCF technology in real-world engineering environments, overcoming challenges such as tension, compression, moisture, and outdoor splicing. It not only optimized dedicated line latency by over 30% but also demonstrated an 800G wide- spectrum optical transmission system based on the C+L band. Over the 20 km link, it achieved an ultra-high capacity transmission test of 128 Tb/s full-duplex single-fiber transmission, laying a solid foundation for the next generation
HCF communication. These technical advancements highlight Linfiber Tech’s superior capabilities and comprehensive expertise in HCF technology. Currently, Linfiber’s cables have achieved the lowest loss of 0.1 dB/ km, and its commercial cable products Linearcore TM features an innovative structure (patent-pending) offer a loss of 0.5 dB/km in C+L band. O-band products are also available with loss level under 1 dB/km. Linfiber provides customers with a complete solution for inter- and intra- datacenter low-latency connections, including HCF cables, SMF28-HCF connectors, HCF-HCF splicing technique and a series of HCF characterization technique. Linfiber Tech actively seeks strategic partnerships with upstream and downstream enterprises in the industry chain to jointly advance the industrialization of HCF technology. With its profound expertise and extensive practical experience, Linfiber Tech is well-prepared to provide HCF solutions for AI clusters, data centers, and telecommunications networks. For more information, visit www.linfiber.com, email sales@linfiber.com, or go to Prof. Yingying Wang’s invited talk at ECOC conference M2D.2 on Monday Sep. 23rd.
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ISSUE 38 | Q3 2024
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