High-end scenarios such as AI computing networks, financial leased lines, and supercomputing center interconnect all demand ultra-low latency from optical transmission networks. Compared to traditional single-mode fiber, hollow-core fiber can reduce transmission latency by 30%-47%, making it an important development direction for next-generation low-latency transmission media. However, limited by the special microstructural design of hollow-core fiber, traditional OTDR equipment lacks compatibility, with significantly reduced detection accuracy. Issues such as difficult link breakpoint localization and high event misjudgment rates have become core bottlenecks restricting the large-scale commercial deployment of hollow-core fiber.
As a leading domestic optical communications device company, Accelink leverages decades of optical module technology accumulation, combined with practical experience in mass-produced high-precision, high-dynamic-range OTDR products, to launch a brand-new product tailored for hollow-core fiber — the Hollow-Core Fiber OTDR.
Three Core Capabilities Building the Foundation for Low-Latency Optical Network O&M
Customized Dedicated Algorithms: Tailored to the special microstructure of hollow-core fiber, customized hollow-core fiber detection logic and data algorithms under direct pulse modulation are developed to solve the problems of characteristic misjudgment and missed judgment that traditional equipment has on hollow-core links. It can accurately identify hollow-core fiber splice points and output.
Corresponding link parameters: it can intelligently identify the access end, remote guidance single-mode fiber, and SMF2-HCF adapters, output a one-way link physical characteristic view, and uniformly mark key metrics such as link loss and reflectance, greatly lowering the O&M operation threshold and meeting the requirements for refined, online, and real-time O&M of low-latency optical networks.
Excellent Dynamic Range: The product has completed verification on a 120-kilometer hollow-core fiber link, covering both short-reach data center interconnect (DCI) and long-haul backbone transmission scenarios, with a dynamic range of up to 22 dB under 1 us pulse conditions.
Narrow-Linewidth Laser Direct Modulation Solution: Leveraging Accelink's mature, high-precision, high-dynamic-range OTDR technology reserves and the supply chain advantage of self-developed, self-manufactured full-series devices, the core performance of optoelectronic devices is upgraded on top of traditional direct-modulation online O&M OTDR modules. With high-sensitivity detection capability, it strengthens hollow-core fiber detection performance. The product's laser linewidth is less than 1.5 nm, suitable for online O&M scenarios, helping optimize bandwidth resource utilization, while supporting wavelength customization for flexible network wavelength planning.
Empowering the Computing Era, Racing in the Low-Latency Optical Network Track: From internal interconnects within AI computing clusters to high-speed backbones connecting cross-regional computing hubs, low-latency optical network construction is entering a full-scale deployment cycle. Accelink will take this newly released hollow-core fiber OTDR as a new starting point, continue to deepen full-chain technological innovation in hollow-core optical networks, work with upstream and downstream industry partners to advance low-latency optical networks from pilot demonstrations to large-scale commercial deployment, and safeguard the efficient and stable operation of computing networks.
