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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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Glossary

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.

Hydrogen Peak

A dramatic spike in the optical attenuation curve, which is due to the presence of hydroxyl ions in the fiber. Also known as water peak.

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