Attenuation signal reduction to dB

Introduction

Many fiber optic technicians are unfamiliar with logarithmic scales and units such as decibel (dB).

This table allows you to get a grasp on the relationship between loss on a logartimic scale (dB) and optical power reduction on a liniar scale (%).

 

Solution

Table

 

Attenuation	Optical Power Reduction
0 dB	0%
1 dB	21%
2 dB	37%
3 dB	50%
4 dB	60%
5 dB	68%
6 dB	75%
7 dB	80%
10 dB	90%
13 dB	95%
15 dB	96.8%

 

 

 

 

 

 

 

 

 

 

 

Graph

 

OpticalPowerLoss.png