Encircled Flux - Solving the Puzzle of Repeatable Fiber Loss Testing

In the past, users have been confronted with variations of up to 40% when measuring loss on the same multimode fiber using two different manufacturer's testers. Encircled flux (EF) is a metric that defines the launch conditions on multimode optical fiber.

More and more fiber manufacturers are requiring Encircled Flux testing as a condition for support and warranties. Find out why EF is moving from a recommendation to a requirement.

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