8. Conclusion and outlook

The global Internet has become such an integral part of modern society that it's almost easy to forget that, in human history, it was born only yesterday. Although invisible to users, optical transmission systems form the backbone of the network, and have played a major role in its fantastic development. In this article, we break down these systems into their elementary building blocks.

We have thus prepared readers for the second article on this theme [E 7 081] , an extension of this one, where we will apply the opposite approach. We will give the reader the keys to...