12.8.2020 | Decibel (dB)
A logarithmic unit describing the ratio of two powers. Used to measure loss (or attenuation) of quality, reflectance, and amplification of optical signals. The ratio of two power levels, P1 and P2, expressed by –10 log10(P1/P2).
P1 and P2, expressed by -10 log10(P1/P2).
