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Return loss

The loss of power in the signal returned/reflected by a discontinuity in a transmission line or optical fiber.

In telecommunications, return loss is the loss of power in the signal returned/reflected by a discontinuity in a transmission line or optical fiber. This discontinuity can be a mismatch with the terminating load or with a device inserted in the line. It is usually expressed as a ratio in decibels (dB).

Key Terms

definition
discontinuity
loss power
mismatch
optical fiber
return loss
signal
telecommunications
transmission line
usage

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Synonymns

Return loss
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Last modified on March 18 2020
Content adapted from Wikipedia
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