Testing Hollow Core Fibers (HCF)

Deploying Hollow Core Fibers (HCF) delivers ultra-low latency and higher power handling, but its unique air-guided structure introduces distinct testing challenges compared to standard glass fiber. This comprehensive application note details essential methodologies for overcoming low backscatter, high bend sensitivity, and non-standard OTDR trace signatures to ensure flawless HCF link qualification.

Download this guide to learn how to:

Navigate core optical challenges, including managing a 14 to 20 dB drop in Rayleigh backscattering and mitigating high SMF-to-HCF adapter loss.
Optimize OTDR test configurations by selecting high dynamic range modules and choosing proper test wavelengths to accurately characterize HCF splices.
Execute bidirectional trace analysis using automated software to calculate precise link loss profiles and isolate real splice loss from backscatter variations.
Complete full link characterization by performing end-to-end attenuation profiling, chromatic dispersion (CD), and polarization mode dispersion (PMD) testing.

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