COVID-19: As a designated essential telecom solutions provider, EXFO remains fully operational with our employees' health and safety as our top priority.

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Technology evolves at a rapid-fire pace. That’s why we’ve built an easy-to-use glossary to help you better understand the terms, technologies and trends that impact your business.


A microscopic curvature, fracture or anomaly in the glass cladding and core that causes small wavelength distortions, which ultimately contribute to signal attenuation. Microbends can occur during the manufacturing process or during installation.

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