Back Reflection Optical Return Loss | Alker Fibre Optic Specialists

Back Reflection Optical Return Loss

Optical return loss (or back reflection) of a connection is the amount of light that is reflected back up the fiber toward the source by light reflections off the interface of the polished end surface of the mated connectors and air. Light reflected from the cleaved or polished end of a fiber caused by the difference of refractive indices of air and glass. Expressed in dB relative to incident power.

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