The ratio of reflected to incident energy.
At a specified plane in a uniform transmission line, the vector ratio of the reflected to the incident waves. The symbol for reflection coefficient is "G".
Ratio of reflected wave to incident wave -- mathematically related to VSWR.
Keywords:  backward, fraction, fiber, loss, face
The fraction of light power reflected backward at the fiber end face. This accounts for about a .2 to .3 dB loss, typically.