Use proper testing methods like one-cord referencing, visual inspections, and calibrated equipment to get accurate and repeatable results. Adopt smart workflows with digital tools and automation to improve efficiency, maintain clear documentation, and reduce errors during fiber. VIAVI provides the most comprehensive range of hollow core fiber (HCF) testing solutions, enabling manufacturers, data center interconnect operators, and contractors to deploy new hollow core fiber with confidence. OTDR test solution for use in the installation, turn-up, and maintenance of Metro. Hollow Core Fibers (HCFs) represent a significant evolution from conventional solid silica optical fibers. Instead of guiding light through a solid core, these fibers confine propagation within a core filled with air or gas, reducing latency, nonlinearity, and dispersion. This article describes the. Astra is Marketing Manager for wireline and wireless test solutions across high-speed optical and access networks, shaping global marketing strategy for these segments. With 20+ years of B2B marketing experience, she holds a Bachelor's degree in Marketing and International Business from Concordia. Hollow-core optical fibers (HCFs) have unique properties like low latency, negligible optical nonlinearity, wide low-loss spectrum, up to 2100 nm, the ability to carry high power, and potentially lower loss then solid-core single-mode fibers (SMFs). In FTTH, ODN, and data center deployments, inadequate testing leads to unstable links, difficult fault isolation, and premature service. Quality assurance of fiber optic systems requires systematic testing and verification procedures that include both factory checks and on-site inspections.