The optical losses in beam splitters vary based on their design. Devices with metallic coatings typically exhibit higher losses, while those with dichroic coatings can achieve minimal losses. Add connector and splice quantities with realistic planning losses. Enable power budget to estimate received power and margin. Press Calculate to show results above. If we have measured gains in linear units (e. in Watts – W), the loss value in dB is calculated by the formula: Loss (dB) = 10 lg ( mW1 / mW2 ) When both gains are equal, the loss is 0 dB, so there is no loss (doesn't happen obviously). This loss is primarily quantified as insertion loss, which measures the reduction in signal power due to the splitter's presence in the optical path. 3 recommends a maximum value of 0.