I am very confused with understand how is possible to have a lot of losses in decibels.
Let´s suppose we have two arbitrary point A and B. Transmition trhought these points are about optical-fiber. We don´t care the wavelenght, distance and and other stuffs.
Let´s suppose we have total atenuation of 16 dB. According to formula of decibels:
Let´s solve the formula and the relationship between Power Out and Power in would be :
It means to the custumer, just only arrives 0.025 of the power sent from de source (ISP, and so on). That means If we want to the custumers arrive 1 watts, We need to sent at least 40 watts:
My question is:
Really this happen ? Companies spent thousands of watts so that only a few watts reach customers ? (because atenuation ). Does It make sense ?