In optics, wall-plug efficiency or radiant efficiency is the energy conversion efficiency with which the system converts electrical power into optical power. It is defined as the ratio of the radiant flux (i.e., the total optical output power) to the input electrical power. In laser systems, this efficiency includes losses in the power supply and ...
Found on
http://en.wikipedia.org/wiki/Wall-plug_efficiency
The ratio of the transmitter output power, be it microwave or optical, to the (electrical) power consumed by the transmitter.
Found on
http://www.coseti.org/glossary.htm
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