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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.

Loss Budget

The total calculated power loss in an optical link or span. Calculation is derived from the sum of all losses including fiber attenuation, splices, components and connections plus a margin of error. Measured in total dB.

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